Just acquired some 120 gr RNFP bullets from MOBCO and doing some trial depth settings for my Henry 327 fed rifle. Lyman's reloading manual for cast bullet indicates a max seating depth of 1.475" which given this is expressed in pistol cartridge reloading section is quite suitable for pistol loading, have used 1.472" OAL for my Blackhawk with good results w/o any chambering issues using the 100gr RNFP SNS bullet. Being a big fan of minimizing the jump of the bullet I have always seated just short of touching the lands with good results.
So thought I would try to lengthen the OAL for the Henry Rifle using the 120 gr RNFP MOBCO bullet version. Have successfully seated out to 1.572" OAL without any chambering issues. Bench testing should evaluate as to any accuracy advantage. Also noticed that any extension of .050" or more in OAL chambers fine but firing pin will slightly indent the chambered round consistently. Have some concerns here and have elected to stay at or below the 1.572" OAL for the Henry rifle. In the future will get a Hornady Depth gage when the tapped case becomes available for the 327 Fed cartridge.
Would be interested in hearing from other Henry owners as to OAL seating experience.
R D Eggleston