I load Speer 300gr Uni-core in my .44's for bear protection. The Uni-core are supposed to limit expansion and act more like a cast. I have a magna-ported Taurus so I don't shoot cast bullets. I'm also playing with some 240gr silhouette bullets to see if they work any better out of my 2" tracker than the Uni-core, I'll post my penetration results soon since both loads over penetrated my last test of a sand bag and two 2x8's
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