.22LR keyhole?

[hatidua]

-anyone know how about far out a .22LR subsonic 40gr bullet (1050fps at muzzle) might start to tumble or keyhole into a target? Or has anyone actually seen it occur? (vs guessing).

[COeskimo]

Having fun with the long shots eh? Sounds nicer than freezing my butt off up north:) big targets out past the 420 until its not hitting anymore? I'm sure on a week day that might be possible. Making trips back and forth.

[hatidua]

Hmmm.......must move target further, things are still very stable at 425y.

[Mazin]

What kind of distance's?

[hatidua]

What kind of distance's?

That, is my curiosity. I know a subsonic 40gr .22LR will punch through a 3/4" piece of plywood at 425 yards with perfectly round entry holes, I'm curious as to what distance they start tumbling and would keyhold into paper (not a clean round entry hole). I'll push some out to 550 yards next week and see how they do.

[Mazin]

@550 with a 22lr isn't that more of a mortar shot [Tooth]

Punching though @ 425, what temp was the original shots taken?

Sorry I originally read the op wrong and thought you were having a ammo issue (looong day@.gov).

[DOC]

I always thought keyhole rounds are from unstable rounds right from the barrel.

[hatidua]

Punching though @ 425, what temp was the original shots taken?

mid-40's