Ttsx 180+imr4831+300wsm?

BearClan

CGN Regular
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Iqaluit, Nunavut
Anyone with experience with this combo in a .300 WSM (180 g TTSXs + IMR 4831). What are your max charges and/or max velocities? Given the differences between the Barnes #3 and Barnes #4 data, I do not trust the using the charge/velocity data from the Barnes #3 Manual.

I used Quickload max data (63.0g) for this combo with good results, but this max charge is much lower than the max charges of other 180 grain bullets (including the Swift Scirocco, which is ofter at, or slightly below, data for Barnes bullets using the same powder).
 
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