Varget and 150g bullets in .308 win. How fast is your bbl?


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R.W.Dale
December 10, 2010, 04:41 PM
I'm trying to establish just a general a baseline as to how much faster my 30" McGowan barrel is (if at all) than the norm for other shorter lengths. I've only owned one other .308 that I didn't keep notes on so I really don't have much of a basis for comparison....Which is where you fellas come in.

The LOad
150g Speer SPBT (yeah I need to order some match bullets)
win case
Wolf Primer
47.0g Varget
COL 2.751" or .010 off the rifling

Velocity 3012 FPS average

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A Historian
December 10, 2010, 05:49 PM
I checked my reloading manuals, and for the same weight charge you're gaining 100-150 feet-per-second.

Keep in mind that pretty much the only thing that was the same with my data was was charge of powder.

evan price
December 12, 2010, 06:07 AM
Seems a bit fast to me in terms of velocity- military 308 with 147 grain is 2700-2750 iirc.

Rob96
December 12, 2010, 06:37 AM
Probably picking up the extra velocity from the 30" barrel as compared to a 26" barrel.

I was able to pick the brain of someone who used a 308 for let us just say "professional" reasons and his personal rifle wore a 30" barrel for this reason. He was able to get better velocity as well as better hits at 1,000yds.

JDGray
December 12, 2010, 07:34 AM
I run my 155gr SMKs at 2700fps, 20" barrel. 43.6gr Varget/ Fed brass/CCI200/2.780"

Sorry, don't run 150s

Redneck with a 40
December 12, 2010, 11:48 AM
My 20" barrel Remmy 700 SPS Tactical will deliver 2600 fps with 168 grain Nosler HPBT. This is with a warm load, Rem brass, 44.5 gr IMR4895, COL of 2.830".

jpwilly
December 13, 2010, 01:31 AM
slow powder and long smooth barrel's tend to put up good velocity numbers. While that's a little high I recently crono'd some 155AMAX pills at 2800fps with a 24" bbl and a luke warm loading of AA2520. The Varget seems to work a little better with the heavier bullets IMO. But if that's what your getting run with it.

What twist rate is that bbl?

Jim Watson
December 13, 2010, 01:43 AM
The closest I have gotten to that load is:
Pac-Nor 28", 10 twist
Lapua brass.
46.5 gr Varget
155 gr Sierra Palma 2850 fps Fed 210M
155 gr Scenar 2954 fps CCI BR

Load .012-.015" off the lands, sorry, I don't have OAL at hand.

Yup, the Scenar was 104 fps faster, unless that CCI primer was a lot hotter than Federal.

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