Thanks all. I'll load up five or 10 tonight or tomorrow and see what happens. I'll work from there.
Originally Posted by tobnpr
Doesn't mean it won't work, just be careful if approaching max that you may be compressing the load. You'll get heavier recoil with the slower powders as well.
Do you vary the distance to the lands (with a comparator), or do you just load to max OAL?
Hodgdon does list max as a compressed load, 55grns. I don't like compressed loads, and will likely stick near the 51grn starting load they show.
I don't have a comparator. I keep meaning to build one but I never get the time. It works well fro me to start near max COAL and work back until I find the sweet spot.
In the case of the 7.62x54R, I load to the COAL of the 7N1 sniper load (3.11 to 3.23") when I can, usually starting at 3.21" or so to allow some wiggle room.
I figure the Russians played with this load to get it right in their chambers, an they know where the lead ends and the rifling starts.
If you look at other loads of that weight range, the sniper load is quite a bit longer, most stopping at 3".