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My Chapuis SxS in 7x65r is giving me a bit of trouble. It's suppose to be regulated with Norma 156 gr Orynx factory loads, but it shoots about 6 inch groups with the factory load. JJ at Champlin is going to re-regulate it and suggested hand loads as factory ammo is really hard to come by. I have 1000 156gr Norma Orynx and lots of Norma brass. I can't find much load data for any North American powder. The factory load is suppose to do 2730fps, at the muzzle it does 2650fps in my rifle. On Chuck Hawks website he shows 49.4grs of IMR4831 to do 2500fps. That's all I got. Any pet loads out there? |