chamber adapters?

[lonewelder]

Has anyone used chamber adapters to shoot 308 in a 30-06?I found some from MCA and thought they might be neat to play with.

[S.R.Custom]

No, but I undoubtedly will try one when when 30-06 brass gets scarce.

[stubshaft]

I've used them and also used the 30 carbine in 308 adapter. Usually use them to fart around with or when I'm hunting to put in a finishing shot (haven't needed it for this yet).

[lonewelder]

I seem to remember an article where someone used one in a garand but thats about all I remember.

[Bret4207]

I have one for 22 Mag in 22-250, but I haven't tried it yet. From anecdotal evidence it seems to be a hit or miss proposition. Some guns seem to shoot very well, others just don't like them. Stories of normally 1"/100 yds grouping guns shooting 3"/50 yds groups abound.

They aren't terribly expensive. They re-sell quickly if they don't work out.

[Johnch]

I have one that uses 32 ACP in a 30-06

Accurcy is 2-3" at 50 yds
And 18 - 20" at 100 yds

I have used it to bag grouse while deer hunting

John

[Doc Highwall]

The trouble with them is there is no rifling for the part of the bullet travel. This is like the adapters for shooting 22Lr in your AR except for the bullet diameter.

[fatelk]

I believe the .308 in an '06 adapters were used by the military to shoot 7.62 Nato in the M1 Garand. At least that's what I was told.

I had one once, and it did not work well. It wasn't something you could just put in and take out as you wanted. I was told the military used lock-tite and reamed the chambers. The .308 has less taper than a 30-06 so it won't fit unless your chamber is really loose or you ream it to fit. I think I still have it around here somewhere, along with the stuck case remover used to extract it.

[Dframe]

A friend of mine has a set of them for his single action revolver. they are 22 calibre chamber inserts for the cylinder of his 45 colt. In this case they apparently use a VERY short rifled section that obviously stops at the front of the cylinder. They shoot to "minute of pie plate" at 20 yards. I won't be buying a set.

[theperfessor]

I could see a use for them in some circumstances, especially by people that don't reload or reload only factory ammo. A 9mm/.38/.357 to .358 or .35 Whelen for example. Relatively cheap ammo compared to factory loads for the full size calibers. Would be good for short range shooting and to give a beginning shooter a chance to concentrate on safe gun handling and the fundamentals of shooting with low recoil.

Folks like use that cast our own can get the same thing by using the full size rounds.

[Von Gruff]

In Europe there is the 5.6x57 and the cases have exceptionally thick necks because it was designed to have an adapter for the 22 hornet and the 22 mag fit the chamber and have suficient for a rifled neck. They are used by all accounts and there was a write-up in a New Zealand Guns and Hunting magazine on its use. I have taken some of these 5.6x57 cases (with a neck thickness of .029) and worked them up to 7x57 cases for a special project with multiple anealings and expansions coupled with neck turnings.

Von Gruff.

[JIMinPHX]

My reloading book isn't handy, but I seem to remember that a .308 has a higher pressure limit than an '06. I don't think that I would want to fire .308 ammo in an '06, even if I did have an adapter.

[andremajic]

I have had some success with the 32 ACP to .308 adapter. Groups are about 2-4 inches at 50 meters with a MOA capable rifle. Very quiet. Sounded like a 22 short with no recoil at all. Would be useful in some circumstances and would definetely kill a jackrabbit at 50 meters. Best thing is I didn't have to do scope adjustments for POA .

[camerl2009]

i had one made for my .303 to shoot .32acp shoots good

i have a few for 12ga 9mm,.410,.45 colt,.22lr every one but the .410 is rifled
the .22lr is off set so the firing pin hits the rim .22lr sounds like well there is no sound at all

[mroliver77]

The trouble with them is there is no rifling for the part of the bullet travel. This is like the adapters for shooting 22Lr in your AR except for the bullet diameter.

Actually there are two kinds of adapters. One is like you say with the secondary cartridge positioned at the rear of the adapter and the firing pin acting on the primer of the round. This gives a jump through unrifled bore before hitting the rifling. This form of adapter stays in the chamber.
The second type has the cartridge at the end of the adapter close to the guns rifling. There is a firing pin in the adapter that transmits the force from weapons firing pin to the cartridges primer. This type of adapter is loaded and ejected like a stock round for the gun.
Jay

[Doc Highwall]

mroliver77, I have seen some rim-fire ones like you describe but I am not sure about center-fire.

[mroliver77]

You know Doc I just might be wrong. I did a search and could only find the .22 style. I could swear I have seen them but I am probably wrong this ONE time. hehe Thanks for keeping me straight.
Jay

[JIMinPHX]

You may or may not be wrong. You have presented an interesting idea though. If you were wrong, you may no longer be wrong after I get a chance to get back out into the shop.

[Doc Highwall]

mroliver77, you could be right where it was advertised at one time but did not catch on. Some times when something new comes along and you find out it is just a new twist on something old.

[284Win]

I have 2 of those adapters, they are made of stainless, one fits my 30-06 and fires 32ACP catridges the other one fits my 308 Win. and fires a 30 M1 Carbine cartridge, they look like empty cartridge casing. Once you have fired the cartridge you eject the adapter and force the sub-caliber casing out with a dowel in order to put a fresh cartridge in the adapter to fire.

Andy