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Deja vu · March 25, 2014, 11:24 PM

I am wondering if there is a chart some where of muzzle velocity of shot relating to barrel length? How short can a barrel be before you start loosing significant velocity? I have shot a police SBS that was an 870 with a 12 inch barrel and the velocity was very comparable to my 18.5 and 26 inch barrel guns only loosing about 50-70 FPS depending on the round fired.

p.s. purely for academic reasons. Though I may make a NFA SBS some day.

March 25, 2014, 11:24 PM	#1
Deja vu Senior Member Join Date: March 14, 2010 Location: Border of Idaho & Montana Posts: 2,584	12ga muzzle velocity? Barrel length. I am wondering if there is a chart some where of muzzle velocity of shot relating to barrel length? How short can a barrel be before you start loosing significant velocity? I have shot a police SBS that was an 870 with a 12 inch barrel and the velocity was very comparable to my 18.5 and 26 inch barrel guns only loosing about 50-70 FPS depending on the round fired. p.s. purely for academic reasons. Though I may make a NFA SBS some day. __________________ Shot placement is everything! I would rather take a round of 50BMG to the foot than a 22short to the base of the skull. all 26 of my guns are 45/70 govt, 357 mag, 22 or 12 ga... I believe in keeping it simple. Wish my wife did as well...