The smaller the pistol the harder they are to hit with, so more practice is needed. Practice, if painful, is not likely to happen often. And yes, you lose power with a shorter barrel since you can't burn the powder up in those lengths in most cases, some new ammo is addressing this.
In the end, I am not a fan of the larger calibers in small pistols. For me, they don't make sense.
He who dares wins.
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