The below targets worked for me. You should be close with RL15, Start low (41.5) and work up in .3 increments. The smk's like to kiss the lands a little to being off about .010. The Berger VLD's like to be in the lands a little. But try them anywhere from .010 in all the way out to .080. Surprisingly I had 2 barrels that were tac drivers with the bullets being off the lands .050. Both of the barrels were custom throated for me.

Hope this helps, I have used RL15 a pretty good bit with my 308's.

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