Anyone have an 6.5 ultra 9 suppressor ?

[keystone183]

Yes. The reason is that the efficiency of the suppressor gets better with length/volume, so more back pressure is created from the longer cans on a gas gun.

The Ultra 7 is a better choice for shooter's ear on an AR15 for that reason, along with selecting a .30 Cal can and not a can meant for .224 or 6.5mm.

The video i'm thinking of was posted on arf. I can't find it or that thread though. Do you remember this, or know where the video is? Or just remember if the 7 was the sweet spot at shooters ear or if 5 was quieter?

[LRRPF52]

Bill A. noticed it when he was working with Ray on suppressing Grendel AR15s when they tested the Ultra 7 and Ultra 9.

Here's a Ultra 5/7/9 .30 cal and 6.5mm cans on a 20" AA 6.5 Grendel AR15 with readings off to the right side of the ejection port/shooter's ear:

[mel]

perfect ty just intime to i head to salt lake tommorow to put my order in

[Bigs28]

So both 7" reduced more sound then the 5"ers and the 30 cal was a little better then the 6.5 at shooters ear on a gas gun is what i got out of that.

[am4966]

[Mhan7]

If i have the ability or time to put hearing pro on i still do though. Shooting out of an ar with an ejection port is louder then a bolt gun to.

You can always get an adjustable gas block/bolt carrier with an "Off" position, and cycle the rounds manually. Works a charm with a BCG that has a side charging handle. Sort of like having a part time bolt gun. A suppressor is another great justification for that combo.

[peak98]

A suppressor is another great justification for that combo.

[Mhan7]

When you're in a forum that's dedicated to 6.5 Grendel, you already know that you're not in an "every man's" shooting club, though don't you?