I just started to work up a load for my 300 with IMR 4064. I have a Lee manual that was very conservative and I've hit it's max load with no signs of flattening the primer. I have an older Lyman manual that has a much higher load (43 grains of 4064 iirc) and this page: http://ataleoftwothirties.com/?p=740 is saying 44 grains! Now I've had great accuracy with the SST's, and I'm completely sold on them. I've used some cheaper cup and cores that were ok, partitions that have been good and some round noses designed probably for 30-30 that were almost all flyers (probably due to the very short oal and sitting so far off the lands).
Anyway, I was wondering if anyone had any experience with 4064, sst's and a model 99 in 300 savage and could share what their results have been. No matter what, I'll be working the loads up slowly and carefully. I already have a bunch of partitions loaded up with H335 that will suffice for deer season this year, but I just might be a convert to SST's if the accuracy keeps up as I increase the load. One thing I noticed was a couple inches of increase in the vertical placement of the shot with each grain and a half increase in load while shooting test loads.
Anyway, I was wondering if anyone had any experience with 4064, sst's and a model 99 in 300 savage and could share what their results have been. No matter what, I'll be working the loads up slowly and carefully. I already have a bunch of partitions loaded up with H335 that will suffice for deer season this year, but I just might be a convert to SST's if the accuracy keeps up as I increase the load. One thing I noticed was a couple inches of increase in the vertical placement of the shot with each grain and a half increase in load while shooting test loads.