22LR Revolver

[Telemark]

22 Mag bullets are a little bigger in diameter than 22LR. So they had to make the barrel bore fit the Mags and the LR hopefully fills the bore.

Would a 22lr lead bullet not expand to fill the rifling? Swage or something like that?

 

[West_Fork]

22 Mag bullets are a little bigger in diameter than 22LR. So they had to make the barrel bore fit the Mags and the LR hopefully fills the bore.

I am not sure about that. Saami specs mag as .005" smaller than LR. I assume these is to prevent over pressure on the mag.

 

[Feelslikefar.]

Would a 22lr lead bullet not expand to fill the rifling? Swage or something like that?

Not terribly well. There's not a lot of bump/objurgation with smokeless powder rounds.

The single six convertibles can be hit or miss (literally), I've seen some that shot great, and plenty that didn't. The barrel specs supposedly right in the middle, a little big for the LR and a little tight for the Mag.

Of course this is the same company that couldn't figure out how to drill a .452" hole in a cylinder in 60 years of trying, so who knows.

 

[West_Fork]

Not terribly well. There's not a lot of bump/objurgation with smokeless powder rounds.

The single six convertibles can be hit or miss (literally), I've seen some that shot great, and plenty that didn't. The barrel specs supposedly right in the middle, a little big for the LR and a little tight for the Mag.

Of course this is the same company that couldn't figure out how to drill a .452" hole in a cylinder in 60 years of trying, so who knows.

The 22 LR bullets are designed to expand under pressure, utilizing a similar tail design as a skirted airgun pellet. I am not sure about magnums other than they are always a heavy plated or jacketed to prevent lead fouling from the higher velocities.

Smokeless powder increases burn/pressure rate with increasing pressure. Black powder is the opposite with decreasing rate as pressure increases. Smokeless is a more violent reaction.

Probably the biggest factor in performance is bullet design with some able to handle the jump into the riflings better than others. This is usually what makes or breaks precision and accuracy in a gun. Regardless or the cartridge, bullets leave the barrel with a different shape and profile than it had when it entered.

 

[Feelslikefar.]

I've handled countless fired .22 bullets and don't recall seeing any I'd describe as the tail being expanded enough to engage the rifling. Heeled, not skirted. Never seen and centerfire heeled bullets that did either. (not talking skirted/hollew base bullets)

 

[West_Fork]

I've handled countless fired .22 bullets and don't recall seeing any I'd describe as the tail being expanded enough to engage the rifling. Heeled, not skirted. Never seen and centerfire heeled bullets that did either. (not talking skirted/hollew base bullets)

Ah, heeled I guess is the correct term. I know it's partly a function of the crimp, but I am pretty sure I read somewhere that some of the gas check comes from pressure expanding the base of the bullet of 22LR bullet, but now that you mention it I need to shoot one into a bucket of water and see if my "memory" is correct.

 

[West_Fork]

.22lr sub sonic (expect more pronounced from full power).

.22 cb