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I've now loaded about 1000 rounds, all of .45. Last night I did the conversion to .38/357 and want to load some .38's using W231. I bought the only bullets I could find in town, 125gr LFP, and I cannot find any load data for these. The closest is in Lyman's 48th, where the load for a 120gr LRN starts at 3.4gr. I have found a couple of loads for jacketed 120's but don't want to go by that.

I've looked at Hornaday's and Speer's books and Winchester's reload data, as well as various reloading sites without finding much.

I want to load some as light as I can for the wife to shoot, then I'll load some heavier for me to shoot.

Thanks guys.
 

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The Winchester booklet shows a starting load of 4.8gr for a 125gr JHP. I loaded a few plated 125's at about 4.0gr and they shot OK. 3.4gr sounds good assuming it doesn't give you stuck bullets :eek:
 

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Five grains difference in bullet weight AT THE STARTING LOAD LEVEL is insignificant.
Load 'em up.
I did some 124 grain cast TCs with 3.2 gr 231 at one time and they shot pretty well and had almost no recoil.
 

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I developed .38 Special loads with Win 231 and the Dillon 125 grain LFP to duplicate the Federal standard pressure 125 grain Nyclad HP load. Using CCI 500 primers, here is the data for 10-shot averages from a 1 7/8" S&W revolver:

4.3 grains Win 231 - 652 fps

5.0 grains Win 231 - 799 fps

5.2 grains Win 231 - 842 fps


I stopped when I got the 5.2 grain load as it gave me the velocity I wanted and it shoots very well from several revolvers for informal practice. Even from an Airweight snubby, the 5.2 grain load had light recoil.

Standard deviations were high on the 4.3 grain load, and dropped appreciably by the time I got to the 5.2 grain load.
 
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