It pays to cast your own hbwc's, the harder alloys allow the bullets to be driven harder/faster. Jacketed hbwc's are even better!!! 38spl's top & 44spl's bottom
I've always extended the wc's/hbwc's out further in the cases. I use them in revolvers not semi-autos. The cylinders on the revolvers are tapered & I like to extend the bullets out until they just start to feel snug in the cylinders. Some lyman 358495's loaded in 38spl cases.
I load the cast hbwc's for the 38spl & the 44spl the same, crimped in the bottom lube groove. The bullets on both of them stick out into the cylinders eliminating the freebore in the cylinders.
The cast hbwc's expand nicely.
So do the jacketed hbwc's
The pistols I carry/the bullets pictured are used in, a 38spl & 44spl.
Controlling the expansion/huge meplat is key to any hd bullet. Another thumper, a home made swagged jacketed bullet for a 45acp, a 225gr jhp. The bullets nose is designed to frag (60gr) leaving a hole for the huge meplat of the 165gr slug to follow & keep penetrating.
To aid in bullet tumbling in snub nosed revolvers, load the wc's/hbwc's out further. That will aid in stopping the freebore/bullet skidding/deformation of the bullet.