I'm having a frustrating time working up a load for the 80.5 grain Yew Tree copper HP in a 243 Sako Carbonlight. So far, I've worked up with N160, which seems to be what most people are using. I have no pressure signs at 46.2 grains, with 3350 fps but don't want to push it more. Norma brass, CCI BR-2 primers.
I was expecting an indication of a preferred powder charge, but nothing stands out as being worth fine tuning with seating depth. Every charge is producing about 1 to 1.2 inch 3 shot groups. The rifle is properly clean before using copper. It shoots Nosler Tipstrike and a 70 grain NBT homeload into half an inch, or .6 on a bad day. I have other powders I could try, N140, N150, RS70 and H414 for example.
What would you do?
I was expecting an indication of a preferred powder charge, but nothing stands out as being worth fine tuning with seating depth. Every charge is producing about 1 to 1.2 inch 3 shot groups. The rifle is properly clean before using copper. It shoots Nosler Tipstrike and a 70 grain NBT homeload into half an inch, or .6 on a bad day. I have other powders I could try, N140, N150, RS70 and H414 for example.
What would you do?
