I've never taken my .30-06 RSI apart, but I have no concerns about sling twist - since I only use one as a carry strap - never as a shooting aid.
This is a sighting-in target, with two separate 100yd groups, shot with factory ammo while zeroing a new scope.
(The target rings are 1" apart)
This rifle's had nothing "done" to it, except had a scope mounted.
As can be seen, by the time the second group was being fired, the barrel had warmed enough to start stringing shots vertically, even throwing the 4th shot in that group higher - not a concern to me, either, since no game animal is going to stick around for a three-shot group.
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