The Lyman # 49 shows Minimum load of Win 231 is 3.5 grains giving 855 fps. Maximum load of Win 231 is 4.1 grains giving 957 fps. This is with a 147 grain Jacketed bullet.
Don't have THAT Manual, however...Lyman's "Pistol and Revolver Handbook", Third Edition, shows NO Data with either Win 231 OR HP38 & 147-gr. Boolits...FWIW, the ONLY 147-grainer they list is a CAST one...HTH....mikey357
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