Getting ready to start loading for a friend's Browning A-Bolt in .270 WSM. I've got access to IMR 4350, H 4831 sc, RL-17, RL-22, and RL-19. Any suggestions for starting points would be appreciated. Planning to use 130 gr NBT and 140 gr NAB, WIN brass, CCI primers. Hoping to find something the Browning will digest well.