I just got a new 300wsm a month or so ago. I've tried a couple of different ammo's in it. I started out w/ Fusions 165gr. They were terrible. 5" groups. Switched to Winchester 150 BT's and started shooting penny groupings. I'm not a fan of BT's so I tried some Win XP's 150gr and got penny size groupings again. I'm still not a fan of the type bullet it is but its better than a BT. I'm just limited on the selection of factory ammo. I want a NP or Accubond type bullet.

Now my question. Have any of you tried reloading 300wsm with a NP or Accubond,Corelocktype bullet? What kind of powders are you using? Anything I need to know about necking and trimming? Hows the accuracy w/each? I would like to stay with the 150gr due to ballistics. I hunt in AL and a 165-180gr bullet is overkill for the size deer 90-190lbFrom past experience to much bullet just zips right through them with no expansion.

winchester lists a factory loaded 180 gr accubond and a 165 gr fail safe.
http://www.winchester.com/products/catalog/cfrlist.aspx?cart=MzAwIFdTTQ==

I find the 165gr Nosler Partition to be thebest all aroundchoice in my 300WSMfor small, medium and larger game. It's the perfect combination of speed and weight. For powder I have excellent results with Ramshot Hunter. Hunter gets my 165gr Partitions moving around 3150fps with sub MOA groups. Other powders that work well in the 300WSM are any of the three 4350s, IMR4831, H414, R-19, R-22 and MagPro. Only your rifle will know for sure what is the best powder and bullet combo.