18” 30/06

Wiscat

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Does anyone have any data on one of these. I have a 30/06 Win model 70 stainless boss that has been sitting in the safe for a decade. My plan is to have it cut and shouldered for a direct thread suppressor. This will give me a 26”barreled package with a reasonable weight. Also I will get new life out of an old rifle. My thought is I should only lose 100 to 125 FPS from the factory barrel.
 

Odindad

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I have a 16.5” barrel .30 GOV’T 06. You can subtract about 400 fps off what factory ammunition claims. Factory 180 grain loads average about 2300-2400 FPS.
 

softcock

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So reality ? . taking a longaction 30-06 cal. and cutting barrel to 16" . Your better off shooting shortaction .308 Win. with 16" barrel, as it is going to be just as 'or more' efficient, with less fireball out the muzzle .
.
 

jphil108

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I have a 16.5” barrel .30 GOV’T 06. You can subtract about 400 fps off what factory ammunition claims. Factory 180 grain loads average about 2300-2400 FPS.

Is it suppressed? How bad would you say The muzzle blast is without a can? I have thought about doing something similar with an old flat back savage in .30-06. I had considered rebarreling to 280 Rem. But it seems foolish to drop $400 into a rifle that isnt worth it’s weight in lead.
 

Odindad

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I always run it suppressed. That was my reason for going that short. I did shoot it a few times with the SilencerCo muzzle brake. Very Loud
 

Wiscat

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Wow 400fps seems like a lot! The boss rifles had a short barrel to start with. 21.5ish without the boss. I don’t have a purpose for the rifle now so I don’t really see a reason not to. I’m hoping for better than the 2500fps I was seeing out of a 16” 308 out of a 18” 30/06. Seems doable?
 

Wiscat

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My goals for this project are 2650 with a 165gr Accubond and 2550 with a 180. This is going to be stickily a hunting setup. I will let everyone know how it works out. I plan on sending it to Longrifles inc for cutting an treading.
 

Wiscat

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The best case is likely around 25 fps/inch loss. Assuming a 24 inch barrel, you'd lose around 200 fps from published under these assumptions. You may wish to consider:
http://bulletin.accurateshooter.com/2015/06/308-win-barrel-cut-down-test-velocity-vs-barrel-length/

Without getting into a discussion of case design and internal ballistics, you may wish the tailor your expectations to the above as a starting point.

That is a great article and probably the most quoted barrel length article in the world. I think even with the loss considerations I should be somewhere in the vicinity of that. If my memory serves me correct I was hitting 2850 with a 165 out of this gun. I need to check the barrel length. I should be in there.
 

DJL2

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Yeah. I pulled down the SAAMI specs last night doing some research. As a fellow -06 shooter, I note that they list max published for 165 grain @ 2950+ fps. I think you can definitely get to 2650 w/ 18 inches...the only x-factor is where you nodes fall out.