I finally got to load up some charges with my Ackley improved version. I was more than impressed with velocity with the 105's.
I used 4350 powder and found 42.5 grns was maximum. I threw that case away and loaded another with 41 grains and shot it through the chrono................3294'/sec @ 11' from the muzzle........or about 3300 at muzzle out a 26" tube. Thats 25-06 velocity with alot shorter case and alot less powder!
Lots of room to play with from here, I too wonder what the 75's will do. I haven't shot for groups yet, only pressure signs; cause there is hardly any data out on this wildcat.
I've heard the 70 grn bullets are super deadly on coyotes, but I didn't hear how fast they were pushing them. generally speaking, we can back down on bullet weight and leave the powder charge alone. That is what I'll do next, but I don't have anything 70 or less at the moment.
Let me know if you try them and how fast they go