I do like the 7 Mashburn. It's like a wildcat for dummies. Fireworm with any 139-145 bullet with 65 grains of 4350.
Load it with H1000 or Retumbo and look for 3200-3250 with a 160, 3050-3100 with a 175 and call it a day. Mine was so easy it was like cheating.
I use Hornady brass and can't see a danged thing wrong with it.
