Just curious what those with 300blk and x39 rigs are using for scopes? I put together a pig gun/fun gun in x39 and was going to put an older mtac on it but decided to look a bit. I see the primary arms has reticles calibrated for it but no first experience with pa as I'm more a burris guy with the occasional one off. Pretty open but of course, have a calibrated reticle is nice. so what's the hive using, thoughts, etc.?