Getting to max load?
I've been loading the 10mm for a while now for my G29sf using my Blue Dot powder that I have sitting around. I normally load 180gr hollow point over 10.4gr of BD using a CCI 300 primer.
I've been reading around and looking at different recipes, and wanted to try the combo with the CCI 350 mag primers. I recently loaded 180gr Speer GDHP over 10.0gr BD with CCI 350. These were probably the hottest loads I shot through the G29 and I didn't shoot many.
I am not getting smileys, but there is a definite case deformation at the throat of the chamber, and I am not getting any primer push or burn out. I am assuming that this is just about the max that I can shoot these loads at?
The other thing is that I also seem to be getting a lot of unburned powder blown out of the barrel, so even with the magnum primer I'm not getting complete burn. Part of my thinking was that the magnum primer, being more spark, will burn more of the powder in the shorter barrel of my glock. Is there a way, besides just repetitive testing, to know where the max burn load is so that all of the powder is being consumed?