shooter995 Posted July 16, 2022 Share Posted July 16, 2022 I have searched here and can’t find any definitive info. Looking for start data for 9 Major. Gun is an SV with the new 2 square hybrid ports, and 3 port mega comp. Thanks in advance! Link to comment Share on other sites More sharing options...
jubi351 Posted July 16, 2022 Share Posted July 16, 2022 7.5gr w/124 gave me 171 8.0gr w/115 gave me 171 3 port comp with no popples so you will probably need .2-.4 more but start under and work up. Link to comment Share on other sites More sharing options...
Don_B Posted July 16, 2022 Share Posted July 16, 2022 Different lots of powder may have different results as will different pistols so use this info with caution. As in start low, chrono and work up. In my IMM 7.9 of Silhouette with a 124 Montana Gold JHP will be about a 173 power factor. I recently went to a match and had unknowingly used 115 JHP and got a 168 pf. Link to comment Share on other sites More sharing options...
superdude Posted July 16, 2022 Share Posted July 16, 2022 Some information here: https://www.ssusa.org/articles/2018/1/9/how-to-use-9-major-in-a-short-barrel/ Always work your loads up. Link to comment Share on other sites More sharing options...
zzt Posted July 17, 2022 Share Posted July 17, 2022 If you have access to SWMP or AA7 powders you will get much better results with those vis-à-vis Silhouette. Link to comment Share on other sites More sharing options...
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