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#3215491 - 10/19/19 11:37 AM Re: 6x45 length question [Re: BOBTAILS]
jasonprox700 Offline
Die Hard Member

Registered: 11/07/06
Posts: 683
Loc: West Central Wisconsin
I run a 12” suppressed. I haven’t chrono’d it, just loaded up some 70gr SMK’s and shot some groups. Out to 300 yards, I don’t feel the velocity loss vs my 16 & 18” 556’s is enough to worry about in terms of ballistics.

I’m very happy with my sbr and it’s pretty much been my go to with a suppressor.

#3215494 - 10/19/19 12:22 PM Re: 6x45 length question [Re: BOBTAILS]
varminter .223 Offline
Die Hard Member III

Registered: 03/01/10
Posts: 2593
Loc: south central Illinois
60 sierras run a tad over 3000 in my 16" 10 twist bhw and my 18" 8 twist bhw with a full case of h4895. 55s will run 3300 with 27.3 aa 2200 in the 16 twist but accuracy is spotty. The 8 twist slings 55s all over at 3300.

Edited by varminter .223 (10/19/19 12:24 PM)

#3215504 - 10/19/19 01:53 PM Re: 6x45 length question [Re: BOBTAILS]
arlaunch Offline
Seasoned Member

Registered: 04/09/17
Posts: 465
Loc: OR
That is incredible velocity.

I have trouble getting 55 grain bullets to go over 3000fps in 223 REM with compressed loads of H4895.

With a 16 inch barrel anyway.

Be consistent with your loading, practice your shooting, speak the truth, love your family and you will be rewarded.

#3215513 - 10/19/19 03:45 PM Re: 6x45 length question [Re: BOBTAILS]
GLShooter Offline
PM Sponsor

Registered: 01/09/05
Posts: 5063
Loc: AZ
Change your 223 powder to AA2200.

Bigger expansion ratio is the key.


Edited by GLShooter (10/19/19 03:46 PM)

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