I was lubing some Lee 358-125 RNFN boolits. I lubed about 500 total. On 4 of the bullets, The skirt/base of the bullet was fractured by the force of the lube. The lube was Caranuba Red and I was using a heater but no air pressure.
About 1/3 of the base separated from the single grease groove to the base of the bullet. The alloy is pistol range scrap and COWW.
Anybody else seen this happen.