308 1 in 12" twist - optimum bullet weight

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All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
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All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should be treated as suspect and not used.

Use reloading information posted here at your own risk. This forum (http://www.full-bore.co.uk) is not responsible for any property damage or personal injury as a consequence of using reloading data posted here, the information is individual members findings and observations only. Always verify the load data and be absolutely sure your firearm can handle the load, especially older ones. If in doubt start low and work your way up.
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Mike357
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308 1 in 12" twist - optimum bullet weight

#1 Post by Mike357 »

With the above twist, is the 155 Scenar a good place to start for up to 600yds?
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Re: 308 1 in 12" twist - optimum bullet weight

#2 Post by ovenpaa »

Absolutely, in fact my view is it would be near perfect. Workable alternatives are the 155SMK and 133.5 Berger as well as others.
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Re: 308 1 in 12" twist - optimum bullet weight

#3 Post by rox »

ovenpaa wrote:Absolutely, in fact my view is it would be near perfect. Workable alternatives are the 155SMK and 133.5 Berger as well as others.
168 and 175 SMK could work well too.

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Re: 308 1 in 12" twist - optimum bullet weight

#4 Post by 20series »

My original PSS barrel 26" 1/12 used to love 155 and 175 SMK's, IIRC 46gns of Varget for both.

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Re: 308 1 in 12" twist - optimum bullet weight

#5 Post by Dangermouse »

Have a read of this thread which might assist

http://forum.accurateshooter.com/index ... 452.0.html

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Re: 308 1 in 12" twist - optimum bullet weight

#6 Post by Mike357 »

I have a kilo of N140 so that will have to be my starting powder until I run out. I'll try 100 Scenars and see how I get on. Going to start off with Lapua brass. Varget gets some good reviews on Accurate Shooter!

Before I start messing about with seating depth, should I run load development for charge only?
It's not the pace of life that concerns me, it's the sudden stop at the end!
sanselm

Re: 308 1 in 12" twist - optimum bullet weight

#7 Post by sanselm »

1 in 12" will also work with 185 Berger BT's if you are feeling flush, they are brilliant bullets, and as Laurie proved in an excellent article some time ago they are the best alternative to people with shooter barrels as their superior BC's mean you can keep up with the long barrelled guys shooting 155's at >3000 fps.

With load dev I always get my charge first then mess with seating depth after, just the way I do it but it works for me.
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