I have loaded a lot of 160gr lswc on 5gr Unique. This load will give you about 100 ft./s better velocity than most factory loads. This is Elmer and Skeeters light regular load. Anybody that shoots it normally prefers it to factory RN loads. It gives something over 900 FPS in a 4 inch barrel. Lyman number 45 gave 5.4 as max so I rounded down to 5gr. That was in 73 and probably 50 to 60% of all of my 38 special since then were that load. Try it ,you’ll like it.

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dd884
JMHO-YMMV