I know this is posted somewhere here but I can't find it.
In the 147gn sticky Doc states that there is no real difference from a 3.5 to a 5 in. barrel.
My question revolves around shorter barrels specifically in this case a 3" 9mm barrel. Does it make a difference with a barrel this short in the depth of penetration?
In a 3" barrel is it better to run a Slower bullet like the 147 or should I switch to a faster 124 or 124P+?
I currently have 4" and 3.5" barrels in 9 mm and am considering a 3" barrel. However I would prefer to standardize on one bullet weight for all barrel lengths if I can do so without compromising penetration.