300 win 180gr Sierra Matchking.
Need some help. I've always been a nosler bullet man myself for all my loads and everyone else i've agreed to do a load for. My dads buddy asked me 2 load him some shells for his 300win I agreed he brought me some 180gr Sierra Matchking HPBT I own no sierra book and i've looked around on the net cant even find anything to get a starting load on that. Preferbly IMR4350 if thats possible if someone could give me a pick me up id love it.