RE: Working up a load – Advice
With loose powder I would start with 85 grains of powder. Shoot three and then kick it to 90 grains. Shoot three more. If the group is good and tight, then kick the charge to 100 grains and shoot three more. Depending on what shot the best, take the last one, load that charge and shoot for the group. If it falls right back in to place you have a good starting point for when you get more bullets.
Be sure to swab between shots. Also you might want to shoot at a range where distance might not be such a big factor. After all you are looking for a load, not even close to finding out how that load will shoot at long distances. 50 yards would be the max distance I would be shooting. This is not a session to tune in the scope or anything else. All it will tell you is what the rifle MIGHT like. I personally think 10 shots is no where near enough for any real load testing.