chamber adapters

[eublepharis]

I see chamber adapters for sale.  223 to 22lr.  Basically a 223 case adapted to allow you to shoot 22lr rimfire out of your 223 barrel.  Has anyone used these?  Any feedback on safty and accuracy.  Is it possible to use my 223 as 22lr without resighting the scope for close range sm game and cheap plinking.  Thanks!

[Catfish]

These thing have been around for alot of years. They do work, but don`t expect to get bench gun accuracy and remember that you have to take it out of the gun and punch out the empty .22 rimfire case with each shot. If you want to play go for it as they are not that expensive.

[Ladobe]

The chamber adapters have been discussed many times on these forums.   Do a search and you should find more info than you care to know about them.

[eublepharis]

Thanks people, found the search feature, will be helpful.

[barber]

I have the adaptor for the .22 mag. in my .223, and it's plenty accurate  out of my Contender .223  and my Ruger  .223 rifle. Maybe I'm wrong, but isn't there a difference in size of the reg. .22  bullet and the .22 mag?  Which makes the .22 mag the same size as the .223?

[Chuck White]

This just got my curiosity up!

I just measured a bunch of 22 LR ammo and this is what I came up with.

Remington 22 High Velocity measured a consistent .2245 inches diameter.
Winchester 22 Super X High Velocity measured from .223 to .2235 inches.
I used a dial caliper, I don't have a micrometer!


I never tested it myself, but I'd guess that the Remingtons would be more accurate, especially in a chamber adapter!

[John Traveler]

It's not simply a matter of factory .22 LR bullet diameter.  Those bullet diameters you reported are within SAAMI specs for .22 rimfire bullets.

The big difference is in the factory dimensions for the .22 LR barrel which has a 0.222-0.223"" groove diameter and the center-fire .22 barrels which have a nominal 0.224" groove diameter.  The bores are slightly different too.

This difference is enough that convertible .22 WRM/.22 LR revolvers by S&W and Ruger have mediocre (although usually acceptable) accuracy when firing the .22 LR.

[Chuck White]

I realize that!

I'm simply making a point that some bullets, in this case, the Remingtons will fit the barrel a little better than the Winchester!

So, the Remingtons should be more accurate!

In the case of the convertible revolvers 22LR/MAG, the mag has a slightly larger diameter and therefore it is usually the more accurate!