The Firing Line Forums - View Single Post - Hi everybody. Question about building a shotgun.

Jim Watson · March 15, 2009, 05:49 PM

Buy it or build it, just remember, the barrel must be at least 18" long and the whole gun must be at least 26" long to be legal in the USA.

I would want at least high pressure tubing to make a shotgun barrel. A 20,000 psi tube with 3/4" o.d. will have a .438" i.d. which will probably work ok, considering that .45 Colt - .410 shot combos are feasible.

March 15, 2009, 05:49 PM	#3
Jim Watson Senior Member Join Date: October 25, 2001 Location: Alabama Posts: 18,535	Buy it or build it, just remember, the barrel must be at least 18" long and the whole gun must be at least 26" long to be legal in the USA. I would want at least high pressure tubing to make a shotgun barrel. A 20,000 psi tube with 3/4" o.d. will have a .438" i.d. which will probably work ok, considering that .45 Colt - .410 shot combos are feasible.