When I use Magnum loads in my M&P 340, the loads I've found which didn't exhibit bullet pull in my
gun, in my
hands, were the Rem 125gr SJHP, Fed 130gr Hydra-Shok and Win 145gr STHP.
There were a couple others that didn't exhibit bullet pull, but they were heavier bullet weights and developed more felt recoil force into
the palm of my hand (versus muzzle whip and torque effect).
Enjoy the 340.