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HP-38 & W231 are the same, but... - 24hourcampfire
38 special and Win 231 | Glock Talk
Using old Win231 +P load data for HP38? | 1911 Firearm Addicts
I need help with reloading data for 45 ACP in RIA FS | 1911Forum
Anyone have any load data specific to .380 Hornady XTP in .380 and W231? | Glock Talk
147g 9mm with Winchester primers and Winchester 231 powder. I loaded 3.7 grains of powder per cart. The rounds tore chunks off of my steel plate. : r/reloading