I heard they had some issues with cartridge setback, (similar issues happened with the .22 Jet in the S&W Model 53). Bottleneck cartridges and revolvers don't get along well. The .17's are the exception rather than the rule. It's very important to keep the chambers clean and very DRY. I would love a .30-30 BFR to compliment the two I already have in .45-70 and .500 S&W Mag. Bill T.