Quote Originally Posted by LRRPF52 View Post
I don't recommend using a 6.5mm can on a gas gun, as while they are efficient at the muzzle, they push a lot of supersonic gas out of the vents in the bolt carrier.

Stick with a .30 cal can for 6.5mm gas guns is a good guideline to follow.
I would have to agree .. 30 cal cans on the 6.5 Grendel work great