I have solved almost fifty rifles now for Barnes bullets. I hate doing it.

I start out with a given Rifle with a book length load and work up the powder charge to near max and look for an improvement n accuracy to tell me what charge it likes. If the groups are an nch or less I'm done. If they're more than two inches I bump the seating depth up to .010 off and start working back .010 at a tme until I find improved accuracy. At that point I refine the charge and usually that's it.