Stopping gas in the face blowback

[Eurodriver]

If you need your FA to make sure the bolt is firmly locked in the chamber, you have problems that no FA is going to fix.

Tell us more about your OIF/OEF experience.

[rapomstage3]

Zero gas with omega/Bcm .300 blk. Non problem. 5.56 whole different story. I run an 11.5" elw Bcm upper and gas is minimal. I believe the can the barrel and the ammo play a big part in how bad it is.

[Benito]

Gentlemen,

There is a significant difference in gas blowback between a 300 and 5.56.

Caliber is relevant in this discussion.

Zero gas with omega/Bcm .300 blk. Non problem. 5.56 whole different story. I run an 11.5" elw Bcm upper and gas is minimal. I believe the can the barrel and the ammo play a big part in how bad it is.

What about if shooting supersonic .300 BLK?
Wouldn't that have a lot more gas in the face/blowback than subs and maybe even as much as 5.56??

[rapomstage3]

What about if shooting supersonic .300 BLK?
Wouldn't that have a lot more gas in the face/blowback than subs and maybe even as much as 5.56??

Not like 5.56. Not even close. Plus we're talking with a can. I shot some supers through my can and they sound like complete shit. So I don't do it anymore.300 blk just doesn't have the gas issue like 5.56. It's just another bonus to .300 to make up for the price of ammo. If your talking without a can than there both a non issue.