You be sure to seat that bullet properly. Otherwise you could end-up with a barrel bulge...... or worse.
The reason I quit 777 was crud rings, seized breechplugs, nipples and bolster drum screws.
+10!!! Long ago, shooting blackpowder and trying to get one more round downrange, I failed to seat and bulged the barrel of my .50 TC Hawken. You can actually see the bulge on the exterior of the barrel down toward the receiver end.
