I recently bought the Browning Hell’s Canyon in the Long Range model with the McMillan stock in 300 wm. I topped it with a Leupold vx5hd with CDS. So I started shooting this gun a few months ago and have gotten very frustrated. It groups fine at 100 yds. 1/2” groups. The problem is moving back to 200. The best it’s doing is about 1.5” groups with as much as 3-4”. I’m using a lead sled, and when shooting I’ll shoot twice and let the barrel cool 15-20 mins. I’ve tried Hornady 200 grain eld-x, nosler AccuBonds 180 grain, and Barnes ttsx in 180 grain. I have tried using a copper fouling cleaner, and have even used a bore snake between shots. Anyone have any advice or tips? Getting very frustrated! Thanks for your time