What bullet weights are you shooting and have you plaied with setting depth? Every barrel is different and I have had barrels that shoot best with the bullet jammed into the lands and other that liked a long jump. Most of the time little or no jump works best for me, but I play with alot of wildcat that are barrel burnners. I`m don`t know what case the 6-PH is based on, but I load for 6mm rounds based on the 223, 222 rem mag, 243 and 284 cases. The smaller case are not as effected by jump as the larger cases. With a 1 in 10 twist you might have trouble stablizing 90 and 100 gr. bullets. Without knowing more about twist and bullet weight I can say no more about that.
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Catfish
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