Slawburger
Master
These discussions often involve people oversimplifying to just one variable. The reality is that there are multiple variables and even when you consider all of them there is no 100% solution. You just try to improve your probability of success to an acceptable level.
1) Shot placement matters but the acceptable variation in shot placement varies depending on other factors. The acceptable margin of error is different with a .22 short and a .44 magnum.
2) Caliber matters but larger calibers introduces variables of recoil, cost, concealability, carry weight, etc.
3) Bullet type matters but no single projectile design is optimal for all targets. Some designs do more damage but only if they reach the target (not the surface of the target). Is the target covered by 6" of organic matter or 6" of organic matter + a winter coat + ...
4) Velocity matters but sometimes less is more and sometimes less is, well less.
5) Bullet mass matters but it can change velocity.
Think through what combination of variables (there are more than I mentioned) apply to situations in which you are most likely to need a firearm.
Generally speaking, a .22 is better than nothing but is seldom the optimal solution. When asked, I usually recommend 9mm, .40 S&W, .45 acp, 38 special, .357 magnum. Those are all common calibers, available in a concealable size, capable in a variety of circumstances, with manageable recoil to enable accurate follow-up shots. Selecting between those depends on the individual person, their skill level, platform preferences, carry method, recoil tolerance, etc.
YMMV
1) Shot placement matters but the acceptable variation in shot placement varies depending on other factors. The acceptable margin of error is different with a .22 short and a .44 magnum.
2) Caliber matters but larger calibers introduces variables of recoil, cost, concealability, carry weight, etc.
3) Bullet type matters but no single projectile design is optimal for all targets. Some designs do more damage but only if they reach the target (not the surface of the target). Is the target covered by 6" of organic matter or 6" of organic matter + a winter coat + ...
4) Velocity matters but sometimes less is more and sometimes less is, well less.
5) Bullet mass matters but it can change velocity.
Think through what combination of variables (there are more than I mentioned) apply to situations in which you are most likely to need a firearm.
Generally speaking, a .22 is better than nothing but is seldom the optimal solution. When asked, I usually recommend 9mm, .40 S&W, .45 acp, 38 special, .357 magnum. Those are all common calibers, available in a concealable size, capable in a variety of circumstances, with manageable recoil to enable accurate follow-up shots. Selecting between those depends on the individual person, their skill level, platform preferences, carry method, recoil tolerance, etc.
YMMV
