Besides all the above advantages for the 600 OK stated above. Cases and a good selection of bullets are available and it is easy to load for. What's not to like. Now all you have to decide on is the stock grade and the action. AHR will do the rest.

Dak

quote:

Originally posted by dakota45056:
Besides all the above advantages for the 600 OK stated above. Cases and a good selection of bullets are available and it is easy to load for. What's not to like. Now all you have to decide on is the stock grade and the action. AHR will do the rest.

Dak

AND now AHR will load the cartridges for you !!!

quote:

Originally posted by Robgunbuilder:
Buffalo- Pse post pics of your shooting a Heym .600NE and a print out with datestamp on it with your Chrono data at 2325 fps pse. Picture and date stamp must match of course. I'm sure we all would like to see that . Pse include pics of the Heym barrel markings so that we can verify it is a Heym .600NE. Most folks here probably have never seen one and you would help educate all of us.-Rob

Its my friends 600 Heym and he`s from Norway. We did the tests in June when I visited him in Norway showing my new 577 rifle. So its difficult to take pics of what happened in June.. We used Saeeds max load data of 178 grs VVN 550 in his .600NE which gave 2325 f/s in his rifle with the 900 Barnes FN solids (Saeed acheived barely 2300 f/s in his).

Buffalo- Why am I not surprised? Why not have him shoot some more of those loads and photograph them for us. Better yet why not come to LV and I'll let YOU shoot my Heym .600NE and we can both Chrono them together. Now that would be fun wouldn't it. Do some penetration tests too. Don't worry the Hospital is close by!- Rob

quote:

Originally posted by Robgunbuilder:
Buffalo- Why am I not surprised? Why not have him shoot some more of those loads and photograph them for us. Better yet why not come to LV and I'll let YOU shoot my Heym .600NE and we can both Chrono them together. Now that would be fun wouldn't it. Do some penetration tests too. Don't worry the Hospital is close by!- Rob

Rob, this is a bit off the subject but since you were talking about chronographing ammo.....Have you ever checked the velocity of A-Square's .500 A2 ammo? If so, how close is it to their published data? I'm particularly interested in their 600 gr Monolithic solid and their Dead Tough sp for use in the hunting field. I've used their 465 grainers in my .458 Lott but not on anything big and dangerous and I didn't check it for velocity. Most who have used their ammo seem to really like it.

A-Square has done a good job in producing ammo for wildcats and cartridges near the point of extinction. I wouldn't be surprised if they started producing ammo in .550 Mag/Express and the .600 Overkill pretty soon.

How does recoil compare between a full power 11 pound .500 A2 and a full power 14 pound .600 OK... similar stock and pad....and no brake on either? Just curious. THANKS AGAIN!!

quote:

Originally posted by Robgunbuilder:
Buffalo- Why am I not surprised? Why not have him shoot some more of those loads and photograph them for us. Better yet why not come to LV and I'll let YOU shoot my Heym .600NE and we can both Chrono them together. Now that would be fun wouldn't it. Do some penetration tests too. Don't worry the Hospital is close by!- Rob

SAFARIKID, bigdoggy700, el jeffe, Idaho Sharpshooter & Canuck32 are excluded. I'd love to see someone go shot for shot with RGB shooting Megabores! Hogkiller says the man shrugs off huge recoil very easily!

SRSHOOTER-For a long time I.ve had nothing to do with A-square. Lets just say it stems from a major disagreement with their former owner, so I have no relevant data to provide. I've never used their brass or loads either. As far as recoil goes, it depends on the guns design. The absolutely WORST recoiling gun I've eber shot is the Heym .600NE. I have shot the .600OK at 2400fps and its dead serious at that level and wants to torque itself out of your hands, but it wont mame you. Not so the Heym.I REALLY REALLY want to see BUFFALO shoot my Heym at a VERIFIED 2325fps. In fact, I'll pay money tosee it happen. I won't even attempt it myself. Despite popular opinion, there is a level of recoil I won't subject my poor ol body to. The HEYM with all its Piss poor design meets that criteria well before 2300fps for this guy! You gots to have way more mass than I have to survive that. IF ol BUFFALO weighs 450lbs or so well maybe he really can handle it. If not well there is a good Hospital close by!
Oh yes, I almost forgot, Quick load predicts Ol Buffalo,s load will reach 75KPSI and requires 111% of case capacity. I'll take it back, maybe I don't want to let him shoot that load in my gun. Heym .600NE's run over $10K these days and are pretty rare birds. The .600OK hits 2400fps at 65KPSI. I will settle to see him just shoot that load . -Rob

quote:

I REALLY REALLY want to see BUFFALO shoot my Heym at a VERIFIED 2325fps. In fact, I'll pay money tosee it happen.

Sign me up!!!

Lets go the range

I have shot the 577 nitro

Rob! Send me that bastard rifle so I can "modify" for proper recoil management!!

I'll fix that Bavarian S.O.B. so it shoots like a 22LR...

quote:

Originally posted by boom stick:

quote:

I REALLY REALLY want to see BUFFALO shoot my Heym at a VERIFIED 2325fps. In fact, I'll pay money tosee it happen.

Sign me up!!!

Lets go the range

I have shot the 577 nitro

Wow!! Make sure it's videoed!!
Geeze boom! I gotta hand it to you, you're taking the Bigbores by storm!

The Heym .600NE is the ONLY gun I own and I have .600,s and .700's on the .50BMG case and of course the 12GaFH, That I'm truly intimidated by. It was built as a stunt gun by Heym and nearly everyone I've ever let shoot it at real .600NE plus levels has never come back and asked to shoot it again. My max with it was 2250 and I have a video of it winding up nearly vertical to my shoulder. I was black and blue from the experience and may in fact have fractured my clavical. Never again! I dont shoot it much and keep it as a good lesson in what not to do.
As for modding it. Well they are rare as hell and very very expensive so stock it stays till I deceide to unload it on a suitable personality. None of you guys qualify( your all friends in my book)
Its the most muzzel heavy gun you can imagine and when under recoil the barrel rises up quickly due to crappy stock design and all that muzzel weight just keeps it rising once it hits 45 degrees or so.. You will need alot of upper body strength to keep it from coming completely over your shoulder. Scared the hell out of me first time I shot it. Thought I'd qualify for one of Saeeds video champions. A honest 2200fps is a scary load in that gun 2300fps will be very interesting to see. 2400fps will be a clinically enabling event.-Rob

Well I am a pretty decent build 6'1" 225 lbs and others can vouch for me and post video of me shooting some of the biggest big bores pretty good. I would be honored to shoot your 600 and killa buff with it. I plan on going for my 40th to africa if thigs go right.

here I am shooting Rich's 550 gibbs

http://www.youtube.com/watch?v=sTnCqaHJSEc

I wish someone would post me shooting the 577

Here are 3 Gems AHR Custom built for me..2-600s..Black one weighed 8 1/2pds w/no brake?19" barrel ,Wood 600 weighed 9 1/2pds/20"barrel and 700 (bottom pic)Weighed right at 11 pds/20" barrel..They all Balance Well! Recoil was manageable with or w/o brake,but I did shoot the 700 without brake and then with..Quite a Difference fellas! ..But,I will say I Never feel recoil when "Bopping" Buffalo,Bears,or Boar

PS.I have another one coming very soon to weigh 7 1/2pds with 16" Fluted SS barrel..Will shoot "Mild Loads" (1800-2000) with "Lil Thor"

Those are such beauties!

quote:

Originally posted by Robgunbuilder:
SRSHOOTER-For a long time I.ve had nothing to do with A-square. Lets just say it stems from a major disagreement with their former owner, so I have no relevant data to provide. I've never used their brass or loads either. As far as recoil goes, it depends on the guns design. The absolutely WORST recoiling gun I've eber shot is the Heym .600NE. I have shot the .600OK at 2400fps and its dead serious at that level and wants to torque itself out of your hands, but it wont mame you. Not so the Heym.I REALLY REALLY want to see BUFFALO shoot my Heym at a VERIFIED 2325fps. In fact, I'll pay money tosee it happen. I won't even attempt it myself. Despite popular opinion, there is a level of recoil I won't subject my poor ol body to. The HEYM with all its Piss poor design meets that criteria well before 2300fps for this guy! You gots to have way more mass than I have to survive that. IF ol BUFFALO weighs 450lbs or so well maybe he really can handle it. If not well there is a good Hospital close by!
Oh yes, I almost forgot, Quick load predicts Ol Buffalo,s load will reach 75KPSI and requires 111% of case capacity. I'll take it back, maybe I don't want to let him shoot that load in my gun. Heym .600NE's run over $10K these days and are pretty rare birds. The .600OK hits 2400fps at 65KPSI. I will settle to see him just shoot that load . -Rob

Rob, I was just curious about the quality of A-Square's .500 A2 loads because, as far as I know, they are the only makers of factory ammo for that cartridge but me and a friend of mine who owns a .460 Wby will do most of the loading for it. I would like to have a couple of boxes of factory stuff around though...but it's no biggie.

TRUE BIG BORES are very scarce in my part of the country. That's why I was asking about a recoil comparison between the .500 A2(11 pound) and the .600 OK (14 pound). My friend's .460 is the most powerful rifle I've shot to date. While it isn't in the .600 OK's class, I've done enough shooting with it and my .458 Lott's to get an idea of the recoil from a .500 A2. I know it will kick pretty good but it won't be ridiculous. My .500 A2 will weigh 10.5-11 pounds naked and I would like to know how much a .600 Overkill should weigh to keep the recoil similar to my .500 A2, without having to put a muzzle brake on it but I don't want the thing to weigh over 14 pounds either.

I'm about 260 pounds myself and and have been a regular at the weightroom and boxing gym for many moons. I do believe that size and strength helps to manage recoil but I have seen some pretty big dudes flinch from .30-06 level recoil and smaller guys (and girls) roll with it with the best of them. A strong will and positive mental approach is very important to overcoming the hurt that comes with harsh recoil.

Then again, some rifles don't just hurt....THEY INJURE YOU! I've never had the honor of shooting a real big bore double rifle but I've read many times that they tend to punish the shooter more than bolt guns of similar class and I know first hand that a big bore Ruger No.1 will put it on ya! As I had previously mentioned, the .460 Wby (Mk. V) is the most powerful rifle I've shot to date but it pales in comparison to some of the other monstrosities I've shot when it comes to recoil! Some of yo might laugh at this but the worst kicker I've shot is an old single shot 12 gauge, owned by the same friend who has the .460 Wby....it's "sawed off" to about 18" it weighed about as much as a Crossman el cheapo air rifle and it's stock was about as wide as a cd case and of course, it had the hard plastic buttplate that never seen a recoil pad. This thing actually disassembles itself sometimes when you shoot it!! It's crazy as hell!! Every now and then my friend and I do the "dare thing" and shoot a couple of 3" slugs out of it each and we swear each time will be the last but I'm sure it'll happen again. It gives us an excuse to drink a few too many!

Proper gun weight and stock design definately helps one have that "positive mental approach" I was talkin' about too!!

quote:

Originally posted by SAFARIKID:
Here are 3 Gems AHR Custom built for me..2-600s..Black one weighed 8 1/2pds w/no brake?19" barrel ,Wood 600 weighed 9 1/2pds/20"barrel and 700 (bottom pic)Weighed right at 11 pds/20" barrel..They all Balance Well! Recoil was manageable with or w/o brake,but I did shoot the 700 without brake and then with..Quite a Difference fellas! ..But,I will say I Never feel recoil when "Bopping" Buffalo,Bears,or Boar

PS.I have another one coming very soon to weigh 7 1/2pds with 16" Fluted SS barrel..Will shoot "Mild Loads" (1800-2000) with "Lil Thor"

DAMN!!!!!!!!!! SWEET-ASS-SWEET!!!

Sorry to hear that sarcastic tone. Really a pity to hear such language. If people having knowledge or personal experience and wants to share it with fellow shooters and hunters they should not be met with suspiciousness and sarcasm just because it goes a bit against someone elses theories or limitations. A shame really.
Why dont you want pics of Saeed shooting his 600 NE Heym a 2300 f/s????
And regarding stock design then please notice what Saeed wrote when testing loads:

"We could not help comparing this rifle to the A-Square Hannibal in 577 Tyrannosaur. Which we have here. Both are very large, heavy rifles. Both are extremely specialized, but not surprisingly, the Heym 600 Nitro Express handles a lot better than the A-Square 577 Tyrannosaur. This is purely a personal preference, but all shooters that have handled these rifles prefer the stock on the Heym."

Sorry Rob so I am not the only one surviving having shot a 600 Heym at 2300 f/s

quote:

Originally posted by srshooter:

quote:

Originally posted by SAFARIKID:
Here are 3 Gems AHR Custom built for me..2-600s..Black one weighed 8 1/2pds w/no brake?19" barrel ,Wood 600 weighed 9 1/2pds/20"barrel and 700 (bottom pic)Weighed right at 11 pds/20" barrel..They all Balance Well! Recoil was manageable with or w/o brake,but I did shoot the 700 without brake and then with..Quite a Difference fellas! ..But,I will say I Never feel recoil when "Bopping" Buffalo,Bears,or Boar

PS.I have another one coming very soon to weigh 7 1/2pds with 16" Fluted SS barrel..Will shoot "Mild Loads" (1800-2000) with "Lil Thor"

DAMN!!!!!!!!!! SWEET-ASS-SWEET!!!

Damn Tom---that 700 is a mighty fine looking piece of hardware. I told myself I don't need anything more than my 600's but that 700 is starting to ge to me. I see you finally came around to the scout mount on it . I wasn't sure I would like that mount system until I tried it on my 600 and now won't use anything but on the really biggies

Buffalo- Nothing personal, I'm just asking for verification. We all post photos here otherwise people won't believe us. BTW- Arn't you the same fellow( Ulrik Hensler)? who developed a "ackleyized" version of the T-Rex and got some impressive velocities from it? You had a different ID then. Why are you not saying this? Also arn't you the same guy who managed to incorrectly measure the case capacity of the .600OK and persistently argued with us about it 2-3 yrs ago? Yes you are! Forgive me for being so skeptical, but few people have ever fired a T-REX, A .600NE HEYM and a .600OK and compared them. I've had that luxury! Thats why I feel qualified to state MY OPINIONS. Also, Remember,I briefly owned a T-REX, which led to some nasty discussions with ART ALPIN about improved cartridges. Dumped that POS as fast as I could and developed a way better round. COME to VEGAS, shoot the guns and I'll eat my words and proclaim you the KING of RECOIL once you recover of course! I'm not questioning your integrity, I'm saying I want to see you shoot that load in the .600NE. Heck, I think its good for one PROOF shot at 75KPSI. I'll let you do it! Lets CHRONO together! Vegas is at over 2000ft above sea level so bullets fly faster there. Just think you might break 2400fps!
Finally, just look at the stock on a A-square T-rex for example. Closest analogy would be a AGED RAILROAD TIE! OF course people would prefer a HEYM stock. IT AT LEAST LOOKS AND FEELS LIKE A GUNSTOCK! Doesn't work worth a damn, but the craftsmanship if you can call it that is indeed better than the A-SQUARE. I could make a better stock than the A-square with a CHAINSAW and hand drill! The only thing A-Square got right was the extra wide Butt that indeed spreads recoil out vs other designs. Too bad they scaled the rest of the stock the same way.

+



=

Macifej- Lucky you, those are the nicest A-square stocks imaginable. ART will positively give up his Viagra hord for those beautuies.-Rob

Actually, AHR did a nice job refinishing, checkering and GunKoting BMG's 577 T-Rex.

quote:

Originally posted by Robgunbuilder:
Buffalo- Arn't you the same fellow( Ulrik Hensler)? who developed a "ackleyized" version of the T-Rex and got some impressive velocities from it? You had a different ID then. Why are you not saying this? Also arn't you the same guy who managed to incorrectly measure the case capacity of the .600OK and persistently argued with us about it 2-3 yrs ago? Yes you are!

I remember that debate - "29% less case capacity" for the 600 OK vs. his once-fired T-Rex.
I get virtually the same water capacity with the single once-fired T-Rex case I have (thanks to Matt) and my once-fired 600OK (Jamison brass).

quote:

Originally posted by Robgunbuilder:
Macifej- Lucky you, those are the nicest A-square stocks imaginable. ART will positively give up his Viagra hord for those beautuies.-Rob

OUCH!!!! That was harsh!!!! I take it that Art Alphin isn't on your Christmas card list?

Safari Kid, When you get tired of that 700 give me a shout! Nice! What length of pull are these rifles?

As to the original question, you will not be disappointed with AHR!!

quote:

Originally posted by Mississippian:
Safari Kid, When you get tired of that 700 give me a shout! Nice! What length of pull are these rifles?

As to the original question, you will not be disappointed with AHR!!

If these AHR rifles feed and function as good as they look, they're worth every penny! SafariKid has given me a severe case of bore envy (with his rifles and handguns too)and has inspired me to work harder at advancing my career so I can afford weapons like these!

SafariKid, how 'bout some more pics.....rifles, handguns, whatever you've got! That goes for everyone else here too....please post some more pics!

I can't post any pics yet myself but it wouldn't matter anyway because my collection is VERY, VERY basic when compares to SafariKid and some others here... but I'll get there one day!

Thanks SRS....Go to Double Rifles and check out the 4 Bore Double Rifle "Mastodon" Pics! My Favorite!

quote:

Originally posted by CCMDoc:

quote:

Originally posted by Robgunbuilder:
Buffalo- Arn't you the same fellow( Ulrik Hensler)? who developed a "ackleyized" version of the T-Rex and got some impressive velocities from it? You had a different ID then. Why are you not saying this? Also arn't you the same guy who managed to incorrectly measure the case capacity of the .600OK and persistently argued with us about it 2-3 yrs ago? Yes you are!

I remember that debate - "29% less case capacity" for the 600 OK vs. his once-fired T-Rex.
I get virtually the same water capacity with the single once-fired T-Rex case I have (thanks to Matt) and my once-fired 600OK (Jamison brass).

Well I was obviously wrong about that. That was based on some casevolume data I got from Dieter Horneber who have made both 600 OK and 577 T Rex brass.
Recently I read that the 600 OK has 213 grs watercapacity. My Horneber brass has 216 grs capacity unfired and 220 grs oncefired. So I see its about equal.
Let me put one thing clear - I do not dislike the 600 OK. Not at all. I have actually had a correspondance with Ed at AHR about buying one based on a GMA action. Think their price of 7000 USD is very fair.

And Rob - thanks for the explanation. No doubt you are a great cartridge inventor and gunbuilder, and I agree regarding the stock comments in your latest post. A Square stockdesign sucks except the wide butt.
But what happended to yhe 600 OK 2 project (same but longer brass -right?)??

And regarding brass for the 600 OK - do you or others have better experience with Jamieson brass or Horneber brass and why)?

Ulrik right?- I have 200.600OK2 cases but frankly never pursued the OK2 as I reached the practical limit in a 12-13lb gun with the .600OK. The .600OK2 would be only a small step up from the OK1 and at that time the idea of the 12GaFH was being born.
All you need to do is rebarrel your 577-Trex to a .600OK same barrel contour and your in buisness. You can even do a switch barrel once your gunsmith takes the T-Rex thread and shank dimensions. Bet you never screw the trex barrel back on after the change though.
As far as I can tell the Horneber brass and the Jameson brass are equally good. The cases last forever from either manufacturer and I'm on eight reloads on some cases at this time.
Lets let by-gones be by gones and start our relationship fresh.
I actually thought your mod of the T-Rex case made a great deal of sense. -Rob

Sounds good Rob, thanks..
Good idea with the switch barrel.. But I think I might order a rifle from AHR anyway - it is very beautyfull rifles they make and an absolutely fair price they charge.. That was why I thought of the 600 OK2. But I guess reamer, loading dies, brass etc. are complicated to get hold of..

Go to Zim this October for elephants and also a good chance for lion (most likely on one of HHK´s concessions). For ele I will use the 577 with Gerards 800 grs FN solid at 2460 f/s and reasonable pressures (got up to 2540 f/s with that bullet but pressures were too high for Africa ). The 2460 f/s loads I have tested in 32 degress celcius after having warmed the cartidges to 50 degrees celsius - none were over 2475 f/s and no pressuresigns, easy extraction etc.
But I would really like to bring a 600 and test some 900 grainers at 2400 f/s. If/when I get one I think I must persuade Gerard to make some 900 grs FN solids like I persuaded him to make the 800 grs in 577

Its too bad there doesn't appear to be a way to get any of my cup-point 900 gr annealed copper bore riders to you for testing. You can see the pics on the .45 subsonic thread. They have some very nice advantages although hideously expensive to make. These should be incredibly good on ELE and as you point out in Africa you want to utilize the minimum pressures possible. These CUP POINT Boreriders function really well in my gun. They do expand a little bit but hold their shape and plow straight through everything. Feed nicely through my GMA and CZ550 based guns.-Rob

quote:

Originally posted by buffalo:
Well I was obviously wrong about that. That was based on some casevolume data I got from Dieter Horneber who have made both 600 OK and 577 T Rex brass.

You are a man of honor - I have made more than my fair share of mistakes.

quote:

Originally posted by buffalo:
I have actually had a correspondance with Ed at AHR about buying one based on a GMA action. Think their price of 7000 USD is very fair.

Ed and AHR do make incredible big bore rifles. If you go ahead with them, you won't be disappointed.

Sorry that Rob can't get you some of his boreriders - I hope that they find their way to NJ, though.

Rob,dont forget me on the 900 Copper Bore Riders please..My latest 600 ("The Rogue")is almost done!

quote:

Originally posted by SAFARIKID:
Rob,dont forget me on the 900 Copper Bore Riders please..My latest 600 ("The Rogue")is almost done!

I gotta ask, is it a 5 pounder??

quote:

Originally posted by .366torque:

quote:

Originally posted by SAFARIKID:
Rob,dont forget me on the 900 Copper Bore Riders please..My latest 600 ("The Rogue")is almost done!

I gotta ask, is it a 5 pounder??

Man,give me a break...how absurd! I'll have you know it will weigh a full 7 1/2pds!

I have heard you guys. I'm going to doa run next week.-Rob

quote:

I'll have you it will weigh a full 7 1/2pds!

Auto-pistol weight.....

quote:

Originally posted by SAFARIKID:

Man,give me a break...how absurd! I'll have you know it will weigh a full 7 1/2pds!

Mellowing a bit? Still though 7 1/2 pounds will enough to break us mere mortals!

Is this one going to be your new grizz gun?