A gunsmith that could cast and spec your chamber and provided ammo is where I would start.Basically it is now a hodge podge of parts, including AA and then on to far more expensive pieces. This has been close to three years in the making, trying to diagnose the issue and replacing this or that. Reading a lot of what prior posters have recommended and going with what was found. Really doesn't make sense, at least to me. I'm not just some person who blindly replaces things or will not put thought into something. People who are close to me come to me to help with issues, I tend to be a problem solver, I'm just stumped on this. I'm about to trade both rifles for a set of sewing needles, just so I can have a new challenge