took these pic's of the rifle twist in my pedersoli .54 tryon,it is an old modle and dose not have the 1 in 65 twist of the newer one's it has a 1 in 47.i used a .45 cal gascheck bullet with the gascheck polished up to reflect the flash of the camera.the bullet is inserted 16" into the barrel as you can see the twist is much tighter than the standard 1 in 65 it has done nearly a half turn at the 16" of barrel, but it still has a deep groove depth .my barrel measures
.530 land .552 groove it is stamped .54 cal but it is realy a .53 cal. the old modle uberty hawkin had the same dimentions but was also stamped .54 cal. the new modle pedersoli's have .540 land and .562 groove which makes them a true .54. i use a .527 ball and a .533 mini sized to .529. its a pity pedersoli
dont offer ther new modles with the option of a 1 in 47 as well as 1 in 65 for there .54. there jager percussion rifle has a twist of 1 in 24 wthich is a stand out for long bullet's .
bernie