1. Don't take this wrong, just asking. How long have you been shooting open? This is normal, unless its excessive. If you are new to open, have an experienced open shooter shoot your gun and see what he thinks. Do a search here on dot movement. There's a couple of videos posted. Compare these to your dot movement.
2. About ten years ago, N340 powder was popular locally for awhile, but at 172-175 power factor. Everyone I know has moved on to slower powders, but it was definitely
Im new to open division . About 2 months and i have just shot around 1k rounds into and trying diff kind of loads. Thank you very much for the advice im still learning all about open guns