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Putting together a .308 for paper, steel, and hunting. Will be shooting mostly 150s, but would like to be able to shoot 180s if the mood strikes me, so currently planning on an 1 in 11 twist. Will I be giving up any accuracy with 150s by picking a twist that will allow me to shoot 180s? Thanks, John Lord, please grant me the strength to change the things I can, the serenity to accept the things I cannot change, and the wisdom to know the difference. | ||
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Hondo, Take a look at this: twist rate ______________________ Smedley  ______________________ From Audacity of Hope: 'I will stand with the Muslims should the political winds shift in an ugly direction.' B.H.Obullshitter ------------------------------------ "Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery" Winston Churchill ------------------------------------ "..it does not require a majority to prevail, but rather an irate, tireless minority keen to set brush fires in people's minds.." Samuel Adams ------------------------------------ Facts are immaterial to liberals. Twisted perceptions however are invaluable. ------------------------------------ We Americans were tired of being thought of as dumb, by the rest of the world. So we went to the polls in November 2008 and removed all doubt.....let's not do it again in 2012 please. | |||
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No, John. I once owned one of those pre-64 M70 Featherweights in .308 with a 1/12" twist, and my favorite woods load for deer was the Hornady 220-grain round-nose with 48 grains of Norma N205 powder. This load shot just a little over 1" five-shot groups at 100 yards, and knocked deer down like someone had jerked a rug from under them! MV was just a little over 2300 FPS, 200+ FPS faster than the same bullet from a .30/40 Krag. And people say you can't use a 220-grain bullet in a .308! WRONG!! "Bitte, trinks du nicht das Wasser. Dahin haben die Kuhen gesheissen." | |||
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I appreciate the responses, but I think I need to rephrase the question: My concern is if I get a barrel that will allow me to shoot 180s that maybe the 150s won't shoot as well as they would with a barrel twisted for 150s or 165s. Is this a problem or will my accuracy potential with 150s still be good with a barrel that will stabilize 180s? Thanks again, John Lord, please grant me the strength to change the things I can, the serenity to accept the things I cannot change, and the wisdom to know the difference. | |||
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John, I shoot alot of .308 and have for many years and have on occasion agonized over the correct twist when doing a re-barreling job. The "ideal" twist is one which will allow the bullet to "turnover" when dropping through the trans-sonic velocity. For a hunting rifle, even a arget rifle, this is a point which should not affect your decision. Other factors will have a greater effect on which bullets your barrel prefers to shoot best. That is where the rub always lies. What I will say is that in my experience the 165 grain weight is the most ideal for all around usage, and your 1 in 11 twist is best suited for that role.  Member NRA, SCI- Life #358 28+ years now! DRSS, double owner-shooter since 1983, O/U .30-06 Browning Continental set. | |||
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1:12 is the classic because it shoots everything well. For a general purpose 308, it’s never wrong. A riflemaker who pays attention to the basics – bedding, chambering, barreling, etc. – rarely turns out an inaccurate 308. Those things are far more important than rate of twist. Okie John "The 30-06 works. Period." --Finn Aagaard | |||
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I'd go with a 1 in 10 twist if it where me. Walk softly and carry a big bore! | |||
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I would go with a 1:10" as well. It extends the range of bullets that can be used to good effect in a 308. Longer bullets for extended range will be sufficiently stabilised and shorter bullets, which require higher resistance to the overturning moment on impact, because they are going faster, will have that. | |||
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