Mart: The 2 verticle lockling lugs on a Winchester 1892 and Rossi Puma rifle rise up into dovetails on the bolt. There is no such feature on the Winchester 1894 action. If your 480 is on a Marlin 1894 action I do not know what changes (if any) they made to Marlin 1894 action in 44 Mag. I looked at my Marlin in 44 Mag but due to the closed top receiver I cannot tell if anything changed. At one time in the past history of the Marlin 1894 there was a rear locking latch on the Marlin 1889. The finger lever lock of the Model 1889 was eliminated on the Model 1894 and replaced by a latch built into the lever itself. The purpose of this latch was to prevent the a gun from firing out of battery. Whether it serves as an additional locking lug is unknown to me. The SAAMI limit 44 mag is 38,000 psi., 480 Ruger is a 48,000 psi.and the 454 Casull is 65,000 psi. My Rossi in 454 is working fine so far. Is your Marlin 480 a factory rifle on an Model 94 or is it a conversion?

Last edited by bobmn; 12/19/21.