Re: Reloader 17 and my 7mm SAUM
I searched around the Internet and found some loads, then looked at load data for IMR 4350 since according to Alliant the two powders have a similar burn rate.
Using all the info I just started at a mid level load (for imr 4350) and worked up .5 grain at a time shooting through the chrony until I began to notice a drop in speed or the usual case signs, or a tight bolt lift etc.
When I got to 58 grains, I sensed the bolt lift to just begin to be ever so slightly stiffer (not hard by any means) than the 57.5 grain load. Everything else still looked great but I stopped there since I had already passed the speed I was looking for (2800 fpls).
I had the bullets heavy into the lands, and temp was 84 degrees so it was rather worse case conditions. I feel confident that in my gun the 58 grain load is safe.
This weekend I'll try the different seating depths with both loads (57.5 and 58). Hopefully one of them will shine.
Not thought about it in the Dakota. Not sure I can get a good case fill due to the volume of the Dakota, I still have a bit of room in the SAUM. I'd say I'm between 85-90% full though.
Now that I'm getting the Dakota rebarreled to 25 inches I think Retumbo, H1000, should work well.
Last edited by dougm; 08-28-2009 at 08:01 AM.