BLC-2 is the go for speed, in my 20" Sako, 60gr Varget in my husky, I've tried several powders, any medium burn powder will work well, CFE.223 and BLC-2 give great speed,
Reloader 15,16,17, 4895, H414, win 748 are great powders,
I have the 250 gr Accubond at 2650fps with 65gr R17 and the 270 speer, @2510 with 62 gr BLC-2 striking same point of impact at 200m, these are stiff loads, work up.
Its very easy to get the Med bores to shoot well, everything I've loaded has shot inside a 1" at 100m in 3 rifles.
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