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Discussion in 'Gunsmithing' started by screech, Apr 15, 2007.
what twist do you need for an 105amax out of just the regular .243winchester. thanks
Screech, go with a 1-9 twist for the 105's and 107 VLD Bullets. You could go with a 1-10 twist, and you could shoot the 75grn and 87grn V-max's as well as the 105 and 107 type bullets. But if you just plan on shooting the 105 and 107 bullets, then go with the 1-9 twist.
the amaxs require a 1-9.
wildcat the 87 vmaxs will shoot out of a 1-9 as well. you would be pushing things trying to stabilize the 105 out of a 1-10
what will a 8 stabilize?
I have an 8 twist Rock/ABS 6-284. It will stabilize the 87 gr. V-Max but blew up the 105's at 3300 fps. 107 SMK shoot very well and don't blow up. Don't know what this means to you but a little less velocity would sure help the A-Max as it shot extremely well in my rifle when it didn't turn to smoke.
I've also got an 8 twist Rock cambered in .243, launches the 105s at 2950, have had no problems at all.
My border barrel 24".243win 1in10 would not stabilise 105's @ 2980fps.
Just changed to 1in8 26" 87gr @ 3150 are OK.
105 and 107's OK up to 3030fps so far
115 bergers are just stable @ 2961fps
The bergers are on the edge but very accurate in my gun