When loading for my mauser actioned 9.3x64 I have had the best sucess with IMR 4320 when shooting the 286-293 gr bullets. RL 15 is also quite good but my rifle has always grouped better with 4320. IMR 4350 has some impresive ballistics listed in Noslers manual but I have trouble getting their max load into my RWS cases.Maybe with a longer action and seating the bullet out a little further one might get a few more grains of powder into the case.While browsing this summer I came across an add for the relativity new IMR4007. It is supposed to be between IMR 4064 andIMR 4350 in burning speed and it is a super short cut powder. That all sounded promising. I've started to load 286 gr Partions and 293 gr TUG bullets. Accuracy has been great so far.I've worked up to 70 grs with the 293 gr Tugs and I'm still several grs away from max. Accuracy is great so far and no compressed loads yet. I have not chronographed any loads yet. Just curious if anyone else out there has tried IMR 4007 in a 9.3x64??

Looks like I'm breaking new ground here.

i haven't even opened my can of 4007