Just been trying out some new loads for my .308. using 168grn Hornady SST's loading 43grains of Varget, CCI Bench rest primers into Fedral brass.
The problem I have is that there are no signes of ove rpressure but according to the Hornady manual I'm near enough at max load for the powder but I'm getting burnt powder residue on the outside of the case neck and shoulder of the case. I'm wondering if I'm not getting complete opturation and there are no signed os excessive pressure. In fact i can still see the B stamped on the CCI primer's.
The question is:
1. Is the black residue around the neck due to incomplete opturation and there for low pressure?
2. Will this cause a problem in the long run fo rthe rifle in terms of wear in the chamber?
3.Can I go past the max load in the book and if so to what?
4. Is there another powder that's worth trying?
thanks in davance for your help and advice.