Grendel Bolt Gun minimum overall length for 90gr TNT's?

[F224]

6.5 Grendel Bolt Gun minimum overall length for 90gr TNT's, it will be run with a permanently mounted Suppressor on a Howa Mini heavy barreled bolt gun.

This will be a night predator rifle with either a NV scope or Thermal.

What would be the very shortest you would go? My Creative Arm's outer tube is 9" long and I'd like to keep the rifle as short as possible, max range would be 400 yards.

[Lemonaid]

16.5 inches. The .5 extra is in case you ever need to re-crown or thread and a margin of safety for legal purposes. You say it will have a permanently mounted suppressor now but what if you change your mind? (many use one suppressor for multiple firearms to save on money and hassel/time).
You can always make a rifled barrel shorter, longer is much harder if you want to keep it's entire length rifled.
That's if my memory is working correctly today!

[FLshooter]

^^^^^^^^^
Good advice

[F224]

The Creative Arms suppressors are very innovative so the issue of locking it into a specific barrel is not an issue. The usual outer tube is not serial numbered, but the the removal-able core is. They have a determination from the BATFE that the tube with a protective cap is not a silencer, so I can swap the suppressor core from one firearm to another. I currently run it on an AR15 upper, and swap it out to my other outer tube to place on other rifles/handguns.

That's why I'm thinking a 9 to 11 inch barrel is possible.

https://www.facebook.com/CreativeArmsLlc/videos/291397761725664/

[Lemonaid]

Oh, that's cheating! If you are not concerned that the BATF will change it's mind like on the bump stocks then it's just a matter of keeping it legal.
So you are gathering information on what the 90 TNT will do up to 400 yards from the vile horde who have pistols with a barrel 9 to 11 inches?
My guess is it would do just fine.
Check this forum link out.

http://www.65grendel.com/forum/showthread.php?17577-12-quot-Grendel-w-Federal-AE-90gr-TNT-and-120gr-OTM&highlight=pistol+tnt

[tdbru]

F224,
as administrations come and go so does the BATF "interpretations". i am with Lemonaid regarding being conservative. of course it's your call. you'll be giving up a lot of velocity in a 9 to 11 inch tube methinks. if you don't care it doesn't matter.
-tdbru

[F224]

Oh, that's cheating! If you are not concerned that the BATF will change it's mind like on the bump stocks then it's just a matter of keeping it legal.
So you are gathering information on what the 90 TNT will do up to 400 yards from the vile horde who have pistols with a barrel 9 to 11 inches?
My guess is it would do just fine.
Check this forum link out.
http://www.65grendel.com/forum/showt...ght=pistol+tnt

Creative Arms has been doing these setups for about eight years, the ATF view the tube as essentially the same as a NRA High Power shooters sight radius extending bloop tube as extensive testing shows no decrease in sound pressure levels with the serial numbered core removed, thread protector installed compared to an un-suppresses rifle barrel.

I've offered the rifle up for sale in it's stock configuration. It's does not eat much and plan on keeping it, so having it sit in the safe till I have the tube cut and mounted ($125) is not a big deal. Being a bolt gun, gas settings and buffer springs will not be an issue. At 12.5" of barrel, it will not require any modification to my existing factory rifle stock.