358Win 1:16" twist

[Con]

Guys,
I've decided that my short-action Win M70 will become a 358Win following a rebarrel. Most Australian makers produce 35 caliber barrels with a  1:16 twist. By my calculations this twist is marginal for the 250gr projectiles. Projectiles I most want to use are the 225gr Partition and 250gr RN Woodleigh for large "elk sized" game. Anyone care to comment on the use of 1:16" barrels in the "slower" 35's? Also why 1:16 seems to be a standard of sorts?
Thanks...
Con

[Rick Teal]

My Rem. 7600 in .35 Whelen has a 1:16.4 twist, and though the heaviest bullets I've shot out of it are 245 grainers, I haven't had a stabilisation problem yet.  When I had my .358 Norma built, I had it made with a 1:12 twist because I planned to use it for testing heavier bullets.

[Steelhead]

I also have a 35 Whelen with a 1-16" twist. I have had zero problems with 225 and 250 Nosler Partitions. I have checked the 250's at 200 yards and no indication of tipping. I have used to 250's to kill bears up to 200 yards with perfect results.

[Larry Gibson]

Con
"]Guys,
I've decided that my short-action Win M70 will become a 358Win following a rebarrel. Most Australian makers produce 35 caliber barrels with a  1:16 twist. By my calculations this twist is marginal for the 250gr projectiles. Projectiles I most want to use are the 225gr Partition and 250gr RN Woodleigh for large "elk sized" game. Anyone care to comment on the use of 1:16" barrels in the "slower" 35's? Also why 1:16 seems to be a standard of sorts?"

Given the short M70 action the 250s may eat up too much case capacity and not allow you to drive them fast enough when seated to mag length.  Whether the 1-16 twist will stabilize the 250s at the 200-300 fps less than when shot out of a Whelen remains to be seen, probably will though.  With a decent length barrel, 22-24", you should get 2250 fps or so out of them.  Nothing wrong with 200-225 gr bullets out of the 358 for the size animals you're talking about.

Larry Gibson

[oso45-70]

Con
I think the reason for the 1 in 16 twist is that the 35 cal in the older days
used thinner skined bullets,  The 35 whelen i had made up had 1in12 twist which shot the premium bullets great. I used barns & noslers and had great luck,, Never found the bullets, always found the game no matter how big or small. Good luck..........Joe