Some good info. My primary is 9mm and 7.62×39. Have never loaded for the x39 yet, but do load .308 168gr Sierra MatchKing HPBT regularly for long range, and I really like IMR-4895 for that caliber. In 9mm I have been using Power Pistol quite a bit for JHP loads and seem to get more velocity per grains than some other powders using a 115gr Hornady XTP JHP. Use standard primers in both loads. By the way, this is in a Glock 17.