I finally got around to testing CFE-BLK in my 17 Hornet. 12.4 gr was around 1/2moa for five shots at 3650fps, and 12.6 gr was around 3/4moa at 3700fps. I felt slight resistance lifting the bolt after firing 12.6 gr, so 12.4gr is going to be my load with this powder.
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Only accurate guns are interesting.
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