Hondo64d, I picked up a lot of '81 LC Match from the same guy, I had the same opinions. I have it all prepped up and have run a few loads out of it. I'm shooting an FN PBR XP .308 and 46.5 gr. of Varget is the load for that rifle with 165 gr/168 gr. projectiles. With 165 Nosler BTs and 168 SMKs seated to the same OAL they both group under 1/2" at 100 yds, and the 165 Nosler actually outshot the SMKs at 200 yds. The SMKs shot a 1.1" group-10 shots , the BT - 10 shots, I could cover that group with a quarter, just a big hole in the paper. I did run the H380 loads through it and they were ok, no pressure signs, but they didn't group as well. Grouping being relative, no 5 shot group I've shot at 100 yds with this rifle has gone over an inch.
