David, Glad to see you use a chrono, most don't. H1000 and RL25 work well, burn rates are almost identical, have no knowlege about 780 so I can't comment. Try to achieve at least 2650 to take advantage of the 300gr BC. I think with an increase in velocity your accuracy will improve if it is ammo related. If you want to run 300gr bullets slow, I would use a 300gr Sierra and save some money. Don't worry about wearing the barrel out, you'll run out of money first. The stock barrel will shoot well. Personally I use RL25 or H1000 with a 300gr Scenar @ 2700, Federal 215M, Lapua brass, COAL is 3.900 with .010 jump, I single feed only. Gets the job done with .5MOA @ 1000.
Later, Brad
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