The Firing Line Forums - View Single Post - 9mm 125 gn. hard cast bullet seating depth and load data

tangolima · July 12, 2014, 03:43 PM

When trying to reuse load data of a different bullet, same weight but different ogives, it is the seating depth that matters, not the col.

For cast bullets I generally seat deeper, especially so for bullets with abrupt profiles, such as swc. This helps feeding. This is because cast bullets usually are 0.001" to. 0002" bigger than the bore. It may get hung up trying to squeeze its way into the leade, if it has more than enough to squeeze into.

I love and hate cast bullets. I generally avoid them if I can so that I don't need deal with lead.

-TL

July 12, 2014, 03:43 PM	#29
tangolima Senior Member Join Date: September 28, 2013 Posts: 3,816	When trying to reuse load data of a different bullet, same weight but different ogives, it is the seating depth that matters, not the col. For cast bullets I generally seat deeper, especially so for bullets with abrupt profiles, such as swc. This helps feeding. This is because cast bullets usually are 0.001" to. 0002" bigger than the bore. It may get hung up trying to squeeze its way into the leade, if it has more than enough to squeeze into. I love and hate cast bullets. I generally avoid them if I can so that I don't need deal with lead. -TL