My Ruger M-77 Mk II Limited Edition in 35 Whelen had a 1:16 twist. It shot 250 grain bullets under MOA at about 2,550 fps. Also, the 250's were more accurate as velocity increased. I suspect that with the slow twist, the bullets stabilized better as they went faster.
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<br>I think Remington and Ruger use 1:16 for three reasons:
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<br>1) Most people shoot 200 or 225 grain bullets in them,
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<br>2) The slower twist helps keep pressure down, and
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<br>3) The heaviest commonly available bullet weighs 250 grains. I know custom makers make heavier bullets, but the shooter who will spring for them probably has a custom rifle with a faster twist barrel.
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<br>Anyway, that's my story and I'm sticking to it. Okie John.
