Guys I worked a load up starting at 40gr of H4350 and stopped at 43.5 going up in half grain charges with the 142gr Matchking. The final load printed a group just outside 1/4 in with no pressure signs in my Savage Model 10 Predator Hunter. Groups were three shot at 100 yards off a bipod and rear bag. The rifle is bone stock, nothing special besides turning down the trigger. Just thought I would share my findings with this new round. I am 2 full grains over max but my rifle loves it.