I use Ramshot X-Terminator, its a small ball powder and its amazing to measure as it is very consistant. also it is very clean and better yet it is cheap. one of the cheapest powders out there. Ramshot Tac is also suppose to be good with bullets 55 grs and up (I use the X-Terminator with 40 gr V-Max) I am going to try some in my 22-250 in the next few weeks here.
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