Don't know if this is the correct forum for this question, but here goes.
I recently looked at a Beretta Storm Carbine in 45ACP and really liked it. This carbine has a 16.5" barrel and I was curious as to how much additional velocity it might provide. I know a 200 grain Speer +P load will move out at about 1000 fps in my 5" Kimber pistol, but I would like to know how much extra velocity an additional 11.5" would provide. Does anyone know if there a way to calculate the increase in velocity that would result by trippling the length of the barrel, which the Storm would do, or a web page available that does it. I would also think that at some point, the barrel could be too long for a pistol cartride, and would actually start scrubbing speed off the bullet once the powder had done its work, but I have no idea where that point would be although I think it might be in excess of 24"s.
Thanks - TEX
I recently looked at a Beretta Storm Carbine in 45ACP and really liked it. This carbine has a 16.5" barrel and I was curious as to how much additional velocity it might provide. I know a 200 grain Speer +P load will move out at about 1000 fps in my 5" Kimber pistol, but I would like to know how much extra velocity an additional 11.5" would provide. Does anyone know if there a way to calculate the increase in velocity that would result by trippling the length of the barrel, which the Storm would do, or a web page available that does it. I would also think that at some point, the barrel could be too long for a pistol cartride, and would actually start scrubbing speed off the bullet once the powder had done its work, but I have no idea where that point would be although I think it might be in excess of 24"s.
Thanks - TEX