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Originally Posted by BradLH
I ordered Starline 357 brass and Zero 158 LSWC... has anyone been successful seating lead bullets in new Starline brass without swaging them down. The new Starline 45 ACP brass I've loaded is so tight I use jacketed bullets for the first firing.
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GCF said, I too feel the "M" style expander dies are better with lead bullets.
The expander plug is longer which provides deeper case expansion so the lead bullet doesn't have to do the case expanding the last bit that it's seated.
All of RCBS's new expander dies are "M" style too.
Also, if your expander plug is too small of diameter for the lead bullets diameter you're using, that tight fit will squash the base.
Some Cowboy Action dies have larger diameter expanders plugs.
A tight fit is good for jacketed bullets in magnum loads that need a lot of case tension but not so great for soft lead bullets.
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