Second shots are easier with the 9mm.
The second shot is the reason why law enforcement opted for the 40cal instead of 10mm when they realized they needed more power than the 9mm or 38special.
10mm is just too much recoil for a accurate second shot.
I love my 10mm. But it does take a lot or practice to get accurate due to the recoil. That is getting harder and harder due to scarcity of 10mm ammo and the price when you find it.
” they needed more power than the 9mm or 38special.”
I am not arguing but I am curious. Please define “more power”.
Faster? Larger? More expansion? Shock?
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Practice much. I miss less with my 45 than any of my friends with their 9. I shoot waay more. Carry the biggest caliber you can be accurate with. It really is that simple.