I have WC820 and have loaded up 300WFN (Lee mold) .45lc, 19.6 Grains, OAL 1.60. This shoots OK out of my Trapper. I have to go to 1.585 OAL to get the cylinder to turn in the Vaquero. Will this length change radically increase the pressure? I ran some at 18 grains through the Vaquero and accuracy was not that great. Do I just need more time at the range doing load development? Just dont want to break the revolver, it was a big purchase for me. Anyone with a chrongraph have any input on lot number 47320? I would like to have just 1 load and bullet for my combo. Thanks in advance.