SIG SBR Barrel Length and Powder Burn?

[Thomas D'Arcy McGee]

Hello,

Would a 7.62 cartridge be able to burn all it's powder in a SIG SBR 12-inch or 14.5-inch?

With the shorter barrels what would be the firing distance loss?

Are these short barrels legal in Canada? If not, what is the shortest length allowed....sorry I am to lazy to look it up

Thank you,

TDM

 

[mmattockx]

1) 7.62x51 would not burn everything very well in a 12" barrel. Should be lots of muzzle blast and flash if that bothers you. Going from a 24" barrel to a 16" results in about 200fps loss. You will probably lose close to that again going to a 12" barrel, so down to around 2200fps or so.

2) Those look like AR variants, so they would be restricted no matter what. If they are not, any semi-auto centerfire with a barrel shorter than 18.5" is restricted as well, so they would be restricted either way.


Mark

 

[Teapot]

I wonder where it is written that "looking" like (or vaguely resembling) a restricted or prohibited firearm meant that it became a "variant"?