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125gr cast rn bullet load using IMR PB?

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I am still a "new guy" to reloading, and I was wondering what load to use for 9mm using 125gr cast bullets? they are round nose bullets, I can't seem to find anything for them in the few books I have so far, was hoping someone might have an answer for me, in case IMR PB is no good for it I also have the following...
H110
Trail Boss
IMR3031 (for my 30-30)

Any help would be appreciated! Thanks in advance!
 
Rarely do you get the exact 125gr LRN that might be used in the reloading manual data, so it's always a gray area. Here's what "Lyman Cast Bullet Handbook c1973" lists for "9mm Luger" with PB:
92gr. #358242 Sug. starting: 4.8 Max.: 6.0 COL 1.020"
95gr. #356404 3.9 to 4.9 COL: .915"
115gr. #358345 3.7 to 4.5 COL: 1.00"
121gr. #356402 3.4 to 4.3 COL: 1.088"
121gr. #358242 3.5 to 4.3 COL: 1.045"
None of their listings are for a 125gr RN, of course. In the event you acquire any of the above cast bullets, now you have some published load data.
See this link for mold info: http://www.three-peaks.net/bullet_molds.htm
 
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