I think it's time we started mentioning some of the calibers larger than the .600. Like the .700 JDJ the .750 Hornady and the .950 Wildcat. Dont get me wrong I am a big fan of .500 Nitro, .50 Alaskan, .577 Nitro and the .600 JDJ. Even though some of the other calibers I mentioned Arent good For much they still offer an interesting conversion piece. If you want any information on the above calibers Just send me a personal message and I'll be glad to get the information or pictures you want to you.

[ 09-26-2002, 22:49: Message edited by: RemingtonMan7 ]

Welcome to our Forum! I'm sure we'd all enjoy hearing about these cartridges!

IF YOU WANT INFO ON THESE CARTRIDGES GO TO WWW.SSKINDUSTRIES.COM THEY HAVE PICTURES AND TALK ABOUT EACH CARTRIDGE. THAY ARE A SPECIALTY COMPANY THAT SPECIALIZES IN CUSTOM RIFLES IN CUSTOM CALIBERS. THEY WILL BUILD ANY RIFLE YOU WANT BUT IT WILL PROBLY COST A SHINY PENNY.

Looks like the .700 JDJ is a based on a shortened .50BMG case. This sure isn't going to beat a .700 Improved on the full length .50BMG case. The .600 JDJ looks like a straight .577 NE case expanded to take the .620 bullet. The ballistics should be similar to the .600 overkill.. I believe Jerry Quintiles was building a 600 on a shortened .50BMG also. He apparantly was able to get this to work on a re- heat treated M98 action. -Rob

What bulet weight and velocty was i on the .950 JDJ...?? And what rifle weight???

Robgunbuilder...!

Will the .700 BMG IMROVED beat the .700 JDJ???

The "750 Hornady" is the 750 grain Hornady A-max bullet loaded in the 50 Peacekeeper, which JDJ copied off my 510 JAB, which I copied off the 500 A-Square, which AA copied off the 510 Wells Express, which Wells copied off the 50 Buhmiller, and so on and so forth, begat this and begat that.

I wish I'd never let that guy Buhmiller in my shop!

The 950 JDJ was a 2800-3600 grain bullet. Im not sure about the rifle weight. Its probly on the web site I provided above

In this caliber, the weight really varies. But i e-mailed the guy himeself, and he told me it weighed 100 pounds!!But there were some other(s)who had this chambering and the rifle came out on 45 # ! Pretty heavy, and sure not for the "weak"!

I fired the .950JDJ back in 1999. The rifle was built on a McBros. action and weighed 24lbs. The muzzle brake weighed another 24lbs., for a total rifle weight of 48lbs.

The cartridge case is a 20mm cannon shell cut down and blown out; bullet was 2800gr. hardcast lead, and I don't remember the velocity.

Recoil was mild, but the muzzle blast was blowing pine cones off the tree overhead!

George

George,
When you say that the recoil is mild is it more than a 12 Gauge Shotgun with a 3 Inch Magnum Deer Slug ?

[ 09-25-2002, 02:51: Message edited by: RemingtonMan7 ]

Robgunbuilder, how do you get a 50 BMG cartridge to work in a M98 Mauser action? I mean the 50 BMG has a base diameter of around .804" a M98 has a bolt diameter of around .7". It just doesn't add up.

Please explain this to me. I mean I know how knowledgeable a gunsmith you are. Can you post pictures of this M98 Mauser shooting a shortened necked up 50 BMG based .62 caliber wildcat?

Thanks,
Axel

Axel,

Rob is a good bloke and is genuine and I have used his advice and passed it onto my gunsmith when he built mine and my mates .585 Nyati's. My gunsmith said that all the stuff I gave to him from Rob was practical and excellent advice which he then followed to the letter. Our .585's function flawlessly bar a minor problem which will be fixed as we wait upon the smiths return from Africa and is not as a result of Rob's idea's.

Please contribute postivily and stop trying to be argumentitive, lets all get along.

jeffeosso, I suppose that the rebated rim would allow you to close the bolt so to speak. I don't believe it would feed from a magazine though. I guess that would make it a single shot. You guys are a lot smarter than stupid ol' me. Next I bet you will find a way to stick a 20 mm cannon based case in to a M98 Mauser.

I sure have learned my lesson though. I will never again question the knowledge of any of the experts on this site. I mean it is very obvious now to me that a M700 is much weaker than the M70, CZ550, M77. Heck I'll wager that a M700 can hardly handle a 22 LR.

Good day!
Axel

George,
I am amazed that the recoil is so light on a rifle of that caliber! I was figuring on recoil similar to the .500 Nitro Express or above. You said you shot it with a muzzle break, Right ! If their was no muzzle break how much do you think the recoil would increase on it.

Axel- Man you have got to stop this insulting behaviour if you ever want any respect here! This is nothing but typical Troll behaviour and it's why your being rejected here!
Talk to Jerry Quintiles. He's in your neck of the woods and a well known and respected gunsmith. I actually have a print here of his cartridge and he shared with me his approach. You know what I believe him. He's extremely competent and even I could get it to work if I wanted to. By the way it held one cartridge in the magazine and one in the pipe or so Jerry told me( I know Axel, you think I lie).
Now as the master/expert machinist you claim to be, I'm certain you can figure out what he did and yes if you want I ( with Jerry's permission will post a picture or send it to you by FAX). Jerry actually has a chambered barrel for sale! I personally would be terrified of using a re-built M98 for such a cartridge( what do I know about action strength) but even you must know that the NYATI was originally built by Sterling Davenport on a M98. None of these guns has seen extensive use and I would not pull the trigger on it myself. Nevertheless, like the 460wby on a M700 there is always someone willing to do something just to prove a point. I think that they give out Darwin awards for such behaviour. with all due respect to the sterling and Jerry, they were also very concerned about the lugs failing and took steps to evaluate if this was occuring. Don't you think that perhaps a Mcmillan action might be a better choice? By the way, I have built a .600, called the .600 RGB Improved on the full size .50 BMG case!. I'll even let you shoot it at full tilt boogy. It will make a T-rex look like a .22 ( not really but you get the idea). I'm actually very proud of it. I can post pictures if you like! Dumb me, I chose a Mcmillan action, because I was a lil concerned about action strength. I later made my own action and it was even stronger. You see, I'm not afraid of the facts and I'm willing to put my money where my mouth is! Sorry Axel- but we sure haven't seen much of anything from you! If you continue to insult me or attempt to provoke me. I and I'm sure others here are going to continue to be very nasty to you! Axel- As I said in another post, How do you want to play it? I can keep this up with you for ever.-Rob

[ 09-26-2002, 05:53: Message edited by: Robgunbuilder ]

Robgunbuilder, please fax it to me. (586)939-7793. I would love to see this.

Danche
Axel

Axel- As I have said before I prefer pictures. This way everyone can see Gerry's work. You can call him if you like.-Rob

Robgunbuilder, thank you. I was under the impression it was a 50 BMG based wildcat. From the dimensions on that drawing it appears to be based upon a 577 NE case or something similar. I apologize to you as I evidently misunderstood you post. I truly thought you said that this was a shortened and necked up 50 BMG case. It obviously is not. Edit- I looked the print over again more closely. It does say it is based upon the 50 BMG. The base diameter is reduced to .7" that is over .100" smaller than the 50 BMG. How thin is the case wall? I am scared of this one!

Jeffeosso, I do not know what I did to annoy you. You seem to be a rather disrespectful ass though. Perhaps I shall refer to you as trolldick to return the disrespect you have shown me. So trolldick, unscrewing and rescrewing your barrel on your rifle to load and eject spent shells. I find this incredibly awesome, what an efficient ergonomic method.

Do you need to carry an action wrench and barrel vise or does one simply hand tighten? Did you purchase this rifle? Do you know if it actually worked? Is there a case strength concern when one turns the base down from over 0.800" to something like .680"? Can you still load that 50 BMG to 55000 - 60000 psi in this new rebated rim form? Did this P14 use a rebated rim? Is there a barrel wall integrity concern within the barrel shank threads due to the .800"+ case diameter?
Please trolldick tell me. I desire knowledge.

If you treat others with respect you will get it in return. This is just a little proverbial advice for you trolldick!

No one in my family carried an M1 carbine in WWII. Wrong army!

Axel

[ 09-26-2002, 07:01: Message edited by: Axel ]

Axel- The case wall IMHO is the least of the problems with this design. However, It does apparantly work and Gerry is no fool ! As a fellow machinist, I think there is a much more significant issue. What do you think it is?
By the way Jeffeosso is a very very competent individual who also has made many contributions here. He also knows what he's talking about!
Axel- You seem to really want to fight with us, and I would like to understand why? Too many things just don't add up here.
I for example was sincerely just trying to help you, but you turned it into a fight and a name calling contest. What are you trying to prove? I don't buy for a moment that you are just trying to understand. I think your just spoiling for a fight and you think the internet is a safe place to vent your rage. Think that over again! Again why? what is the point? None of us understand what your trying to prove and that's why your getting so much hostility from us!
If you sincerely want to "hang with us" then calm down and quit trying to suck us into these obvious mind games. It isn't going to work. We are open to any actual contributions you may make, but it's going to depend on you!
I've said enough-Rob

I thought my problem with Jeffeosso what rather obvious. He has been calling me names almost from the first post that I and he have connected on. This occurred even before our fight broke out. I am not itching for a fight, actually it is quite the contrary.

With regard to action strengths. I am interested in understanding your position. Action strength is an OBJECTIVE thing not subjective. The action strength is then INDEPENDENT of OPINION. Therefore, we cannot chose to agree or to disagree. One of us is wrong while the other is right. I have looked at the actions and can see no obvious reason to support your contentions. So I have asked you to please explain it numerically to help me to better understand. If this is something you are unwilling/unable to do that is fine and I will drop the entire subject.

Axel

Robgunbuilder, I do not see any reason I could not machine a barrel for this 60 BMG you have provided a drawing of and fit said barrel to a M98 action. Could you please explain to me why a barrel chambered for this round could not be installed on a large ring M98? Of course special attention would need to be used to ensure proper head spacing. I believe all that would be required is a tight finish chamber reamer. I could be missing something obvious though. You must admit the drawing is a little difficult to read.

The only thing I did notice is that the case seems very long for a M98 action. The bullet will be seated deeply I believe.

Thank you for sharing your knowledge with me.

Axel

[ 09-27-2002, 02:23: Message edited by: Axel ]