After finding about 150 rounds of API that is not sized, a .510 sizing die is needed. Midway gives birthday discounts, so I emptied my wish list from them & got a few other odds & ends along with the .510 & .224 sizing dies. A couple of the .50 caliber magnum loading blocks will help keep stuff sorted out.
Running those .50 caliber projectiles thru the sizing die using the Rockchucker was pretty much not a workout, but about ten of them reminded me of what its like to stick a brass cartridge in a die & rip the base off. They all sized well & are not going to be fired till hurricane season when things are soaking wet!
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