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I checked with Marshall at Matrix and he says a 9 twist will handle both bullets.
So, the next question who makes a 9 twist in 270 wsm or any other 270 caliber.
shot the 145 and 165 vld's in my Vanilla Sako 270 this weekend. The ladders (Imr-4831) looks pretty good but not spectacular. would be nice to test with something that would allow me to get the bullet into or close to the lands.