Thanks to Jim at Northland Shooters supply for support with my 280.
30 rds. load testing. 30 rds. shake down Thursday with one load. First round of the day impact at 1000yds. Friday. It is still interesting. Saturday, four rounds to get the 1200yd target. All were close but one that fell short.
Now to re check my load. I think the gun shoots.
162 over 56.2 H 4831, Rem brass, new / fl sized.

30 rds. load testing. 30 rds. shake down Thursday with one load. First round of the day impact at 1000yds. Friday. It is still interesting. Saturday, four rounds to get the 1200yd target. All were close but one that fell short.
Now to re check my load. I think the gun shoots.
162 over 56.2 H 4831, Rem brass, new / fl sized.