brewer12345
40 Cal
- Joined
- Apr 22, 2019
- Messages
- 463
- Reaction score
- 264
I was out shooting with a TC Hawken with a GM 50 cal slow twist barrel. I tried 3 different powders (Grafs 3F, 2F and Black MZ) in a range of charges (50 to 90 grains), all with a cast .490 ball and a .015 wonder lubed patch, swabbing every 3 shots. For all 3 powders, 70 grains was the ticket. These powders shot a little better or worse than each other at the magic charge, but the rifle liked 70 grains over all other charges with each powder. What is going on here? I suppose I could push higher charges with an over powder wad, but for target there is no point and for hunting I doubt a mulie doe would survive a hit with a .490 round ball propelled by 70 grains of 2F out to 75+ yards, which is about what I would be willing to shoot to.