It varies, 1911, 19-3 in 4", pre 27 6.5", in the woods camping in the RV it is a 629 in 4".
Tonight is is an Astra constable 22 LR, you know the spanish Bond gun.
I hit a snake in the head last summer, I was afraid he had been in the RV which would have freaked my wife out. at 25 yards I hit him in the little head on the 3rd shot.
I've arrested a few 2 legged snakes. I guarantee their fat little heads are much larger and will be much closer.
I'll have an early warning, our female lab takes guard duty serious. If she hears folks in the yard she barks. The old paper boy came by at 2 AM, yep 2 AM, he stepped up on the porch to drop the paper under the mail box. She barked every time. IF some one knocks she barks. If some one walks up to my truck she barks. Ya know what, I like her.