A fellow I know wants to sell his H&K Model 770 in 308 cal,I need another rifle like I need another hole in my head,but I have never seen one of these ....it's a semi auto .308 Win,with the correct scope mounts(quick release) NO SCOPE...it's been used,the stock is rough and some rust staining is on the barrel and action ....he's asking $600.00 for it ,and I'm not sure it is worth that much ???

Any thoughts would be appreciated !

BB34

Ask him if you can shoot it (or ask him to shoot it in your presence.

If it shoots well, buy it.

George

B-B,

I hope you don't reload - because you'll be disappointed.

The H&K is a Fire & Forget option only.

It has a fluted chamber so the fired brass will have peculiar looking brass & blacks stripes on it pocket-marked with gas burns AND if you manage to find one you'll be fortunate because it ejects the brass about 12-15 ft. half-right in front of you.

I was just going to mention the fluted chamber also...but GERRY beat me to it!

However, as he did not mention it I will, this fluted brass will be USELESS for reloading.

If you try to re-size it the case will often collapse on one of the flutes instead of being compressed down evenly all around the case.

Last input...that 'scope ring if the original may, perhaps, be for a 26mm diameter 'scope!

I handled one of these HK 770 rifles (there was also an HK 7) in 308 maybe thirty years ago.

They are (or were when new) solidm robust, good quality. In fact everything that HK established a reputation for.

But as to if they were "regulated" for anything much different from 145 to 155 grain sporting ammunition maybe GERRY knows more?

I would also maybe consider that they may, like the M1 Garand, "not like" modern slow burning powders?

That it has rust staining would (unless it has sat in a gunsafe for thirty years) set alarm bells ring in my ears...

I know one thing. If you don't want it I would sure appreciate a PM, because I sure do!!

Although the brass does get sooty where it "floats" in the chamber on the gas in the flutes (and that is why the flutes are there...for the case to "float" on during firing, to ease ejection) they certainly weren't a problem to reload for with the ones I fired years ago. The case pressure inside the case is at least as high as the case pressure outside it...inside the case is where the gas comes from, and the pressure drops a wee bit as it exits the cases and flows into the flutes.

Still, the gas pressure inside the case isn't enough higher to force the case out into the flutes either, otherwise, the cases would NOT eject reliably.

I had a H&K 770 up until '96 when the Gov't decided they needed it more than I and forced me to sell it to them. I found it accurate and reliable and shot a heap of pigs, goats and Sambar deer. I remember firing a shot out of the vehicle at some fast departing pigs, and the spent case cracked my windscreen.

I bought it for $850 and gave it up for $2750 lol

like a/c says reloading isn't a problem, but rebarelling is. you can't just screw on a plain barrel, the chamber has to be fluted again. so if the rifle is past its decent shooting life, pass on it

quote:

Originally posted by butchloc:
like a/c says reloading isn't a problem, but rebarelling is. you can't just screw on a plain barrel, the chamber has to be fluted again. so if the rifle is past its decent shooting life, pass on it

Butchloc is correct. The H-K series, including the 770, extract and eject fired brass while the gas pressure is still quite high. Essentially, the case must either be floating in the chamber or have an oiler design which lubes the case just before it is fired. Otherwise, the high pressure makes the case sieze the walls of the chamber while the bolt is trying to extract it.

(I suppose a third way would be to have the chamber fold open longitudinally and drop the case out, but that's hardly practical on a hunting rifle design.) Anyway, H-K opted to keep the original design concept, and float the case on the propellant gas. Combined with high gas pressure at the time of extraction, it makes extraction and ejection very reliable, which is a great feature in a combat rifle, such as the 91/93/G-3 series from which it was derived.

But, it also means that if you rebarrel without a fluted chamber, you will likely experience a combo of misfunctions, including broken extractors, rims or heads ripped off of cases, partial extractions, and so on.

This last part I don't remember for sure, but it seems to me the original barrels aren't threaded on...seems they are "heat differentially fitted"...receiver ring hot/barrel cold when forced together. If that is not correct, I'm sure some H-K expert will correct me here...at least I hope so.

I seem to also recall that they have a roller-locking bolt. The fall of the striker pushes the rollers out into cavities in the action body, so the rifle cannot fire unless the bolt is locked.

Very well made rifles with original development inolving both Spain and France, and the finishing touches by German engineers.

Civilian version of a G3. The brass loks like it was crimped with a vise grip and hit with a hammer but it always works. Great rifles.

Gentlemen,How old is this rifle ???

BB34

Still mulling it over (

They were introduced in 1978, and were the rifle length version of the H-K sporter series based on the G-3 battle rifle devloped by Spain and France after WWII. The SL6-SL7 were essentially the carbine length versions.

All the 770s came with polygonal hammer-forged bores, which often makes the rifling appear quite worn to those unfamiliar with it, even though it usually isn't. Its pretty darned hard to wear the bore out of a sporter, when the whole bore turns, not just some rifled grooves.

They also came with integral flash-hider slots at the muzzle which appear a lot like after-market MagnaPorts but are actually original.

I used to sell those rifles out of our Class 3 shop in the early 1980s, and I can tell you, the price on that one is a real deal if it is in good shooting condition.

If the owner is your buddy, he should both be willing to let you shoot it, and tell you why he is selling it. If it does not function well for him, it is likely because he doesn't keep the action nice and clean. If allowed to get really filthy dirty, they CAN malfunction.

Gentlemen, I have been shooting a H&K 91 since 1977.
I have shot thousands of reloads through one.

I did a test one time with 11 rounds, 10 different Military cases and one Federal case.

I fired them and reloaded them 10 more times, with no proplems.

Where most semiautos "pull" the case out of the chamber, on the H&K's the case "pushes" the bolt back.
So usually a case will only last a few firings in say a M1A, but will last at least 10 in the H&K.

I owned a SL7 for a while, and I hage had 3 buddies with the 770's.
They shoot very accurate, and are very reliable, with both the 3 round and the 10 round magazines.

Their scope mounts go back to zero 100%.

I think all the barrels on the SL7 and the 770 had polygon rifling.

If you want/need an accurate, rugged, reliable semiauto hunting rifle you cannot beat a H&K 770, IMHO.

And again I will say you can reload brass fired in an H&K, several times, more than any other semiauto that I am aware of.

I just use standard full length sizing dies.

Also I have fired brass shot in a H&K, then reloaded in regular bolt rifles and M1A's as well, again with no problems.

I do not know where these "stories" of the H&K's ruining the brass on the first firing started, but they are not true.

Also a H&K must have a fluted barrel to work.
H&K's have 12 flutes in the chamber.

Some "Clone" companies have made rifles with less than 12 flutes.
Their relibility with all ammo has not been good.

The fellow is an aquaintance,and is moving...he's attached to the rifle....

I may go pay him a visit tomorrow...

Please explain more about the chamber/rifleing ??? Sounds very unique !

Thank-you !!!

BB34

I have an SL7, HK91 and a custom built G3k all with fluted chambers. They are all accurate, super reliable and if you can find the brass it is not pretty but readily reloadeable. I have port buffers on the 91 and the G3k to keep them from getting dented. Never had the denting problems on the SL7. Your 770 is a hell of a buy.

a/c that oiler idea really does work. years back i tried to rebarrel an h&k 91. of course not thinking (one of my famous attributes) about the fluting. anyway if the round wasn't lubed it stuck in the chamber, if i used hornady dry lube stuff the gun functioned fine, and if i used any type of oil the shoulder of the case would come out looking like a balloon. so in addition to teaching me the hard way about fluted chambers, i also found out why i got cases sticking in the loading die when using the hornady lube

Yeh, Butchloc, the oiler is not a new idea, Many of the early experimenters made machine guns with oilers, and a lot of the developmental semi-autos were made that way too.

Some guns which even were adopted into various military services used oilers, though off the top of my head I don't recall which exact ones. For some nagging reason, I keep thinking of a Japanese Nambu machine gun as an example, but that is probably just old age playng tricks on me.

It wasn't that anyone actually LIKED the idea of an oiler, but for self loading guns, whether semi or full auto, it was absolutely necessary that they extract and eject reliably.

Somewhere I once read that keeping from having to use an oiler is one of the reasons that John C. Garand experimented with both a muzzle cap and the gas port way out where it is as part of his design, to keep from having to use oiled ammo and build an oiler into the rifle. Both had the evil effect of requiring a very long op rod, but that is still way better than an oiler.

I swung by my neighbors today to see the H&K again,and he explained that it had broken ....a small screw fell out and a small spring and detent popped out ,but he was able to find all of the parts and put them in a baggie,so I took the gun home and repaired the mishap,cleaned the gun(the bolt assembly was very clean),oiled it all up ,and returned it to my neighbor ....then he asked me to go fire it,and I'm going to bring it to the range tomorrow and see how it works ....he stated the rifle has not been fired much,less than 100 rounds but the rifling looks strange to me ....as if it's worn down....I'll find out tomorrow ...

BB34

My wife has owned and shot one since the mid 1980's... I understand the scope mount alone these days is worth $900... the rifle is the lightest recoiling semi... just watch the ejection! Owners manual is available online in digital, or with a PM I'll email it to you.




One last thing... the owners manual is available online or with a PM I'll send you a digital copy...
3 shot and 10 shot magazines



two types rubber like internal buffers under the receiver cover.

wierdest saftey position on the planet.

quote:

Originally posted by Bigbird34:
but the rifling looks strange to me ....as if it's worn down....I'll find out tomorrow ...

BB34

Polygon profile on H&K's

Cheers

quote:

Originally posted by Bigbird34:
I swung by my neighbors today to see the H&K again,and he explained that it had broken ....a small screw fell out and a small spring and detent popped out ,but he was able to find all of the parts and put them in a baggie,so I took the gun home and repaired the mishap,cleaned the gun(the bolt assembly was very clean),oiled it all up ,and returned it to my neighbor ....then he asked me to go fire it,and I'm going to bring it to the range tomorrow and see how it works ....he stated the rifle has not been fired much,less than 100 rounds but the rifling looks strange to me ....as if it's worn down....I'll find out tomorrow ...

BB34

Yes the rifling is not the traditional land and groove, it is Polygon Rifling. It lasts a LONG time.

My Neighbor has the original owners manual,and the styrofoam box it came in ....I could not have dissassembled the bolt without the O.M. ....I may just own this rifle at some point today....

Thank-you all for your replies regarding this rifle ....and yes it does have a strange safety,and it's really not the prettiest gun,but it is unique,and I think thats why I'm drawn to it ....

Taget results soon...(I got to find some ammo).

BB34

I shot the H&K 770 today...I had my friend watch where the brass flew......ummmmm he couldn't see it eject from the gun,so he shot the gun ,and we found 3 pieces of brass of the 9 we shot....this gun does not eject the shells,it hurls it at warp 2 out of the gun and send it's 20 to 25 feet to my 2clock .....anyone standing close to me would be cold cocked by the brass !

The gun shot well,it's now mine

Here's a pic of the brass...

http://img.photobucket.com/alb...gbird34/DSCF5208.jpg

More to come.....

TIA,BB34

quote:

..... this gun does not eject the shells, it hurls it at warp 2 out of the gun and send it's 20 to 25 feet to my 2 clock .....

I told ya!



Funny & coincidently, earlier this week at a gunmaker's indoor 2-lane range - I'm on the right bench and (you guessed it) some Ye-Haw comes tottering in and commences to send a Warp Factor 2 torrent of hot brass ricocheting throughout the room with his new Thumbhole H&K - Jerk. Found 2 pieces in my Range Bag when I got home and 1 of them was "melted" to my glass case!

Since he was obviously lacking in Range demenor, while evading a hail of whizzing empties I calmly proceeded to affixed the Muzzle Brake to my 300 Weatherby and touched off a few in the VERY confined space in the hope it would change his attitude. It didn't; but sure whirlwinded his stack of targets through the room with the brass.



Took a look at your brass photo - appears you purchased the "clean" brass version option, compared to the (few) empties I've ever managed to recover (you noted this feature also) after being spit outa many of them - your's appears, well; almost re-usable.



Have Fun with your new Boomer.

A couple of more questions gentlemen....

1).The bolt seems to open harder than it should....I only lightly oiled it....what is the proper lubrication and where ???

Also the quick release mount says 25 on it ,does that mean 25 mm diameter ???

I love new/old toys....keeps me thinking

I took the model 770 apart last night and lightly greased the rails ,slides,bushing etc....the bolt required extra effort to open it ,and now it is a easier to open,and closes at Mach II,so you need to watch where you hold the rifle so you don't slam your fingers when the bolt closes ....

The Quick release mount appears to hold a One inch scope ,so now I'm looking for one of those to put on this rifle ....

I figure If I erect a cinder block wall to my right at the range ......I "might" be able to find some of my brass when it is ejected from this rifle ....or the brass will destroy the wall

Here's a few pictures...




Best Regards gentlemen ,BB34

DAMN THAT'S A NICE RIFLE!!

Wish it was mine.

The .26 m/m rings are so little larger than 1" rings, you should be able to wrap a bit of tape or something else around the scope tube and use the rings you have.


For close up deer, have you condered aiming about 35-degrees to the left of the game, and killing it with the brass casings?

Alberta Canuck,If I ever decide tp part with this H&K,you'll be the first to know ....I'm starting to enjoy collecting these odd ducks ! It sits right next to my Schultz & Larsen in 7x61 S&H ,Next to my Icon in 30T/C ,and my wthby in 338-06 ,and so on and so on .....

Does anyone have any advice for reloads for this rifle ??? I have a few hundered 150 Sierras I could load up for this beast ,plus some 165's and 180's ....I need to find a scope for her also....

After hunting season ,I'm going to redo the stock ,and make her purdy !

I would assume with the ten shot clip you could have a ball !

Thanks Guys ,BB34

One more thing to mention: Do not allow the bolt to slam forward without a cartridge being stripped from a magazine. Parts can and will break!

quote:

Originally posted by Bigbird34:
Alberta Canuck,If I ever decide tp part with this H&K,you'll be the first to know ....I'm starting to enjoy collecting these odd ducks ! It sits right next to my Schultz & Larsen in 7x61 S&H ,Next to my Icon in 30T/C ,and my wthby in 338-06 ,and so on and so on .....

Does anyone have any advice for reloads for this rifle ??? I have a few hundered 150 Sierras I could load up for this beast ,plus some 165's and 180's ....I need to find a scope for her also....

After hunting season ,I'm going to redo the stock ,and make her purdy !

I would assume with the ten shot clip you could have a ball !

Thanks Guys ,BB34

BigBird...

Thank you very much. I'd feel honoured.


Your tastes are starting to sound as eclectic as my own. You are either going to have to get innoculated very soon, or suffer through a lifetime of wild fun, trying out every oddball thing you can lay your hands on. Take my word for it...

Been there, done that, and still doing it.

Just remember, as long as you are buying new-to-you rifles, you'll never die!

A.C.,I have been "suffering"my whole life.....I wouldn't want to stop now

BB