This data came off this forum somewhere. I do not have@nvrpc1, you are looking at Service Rifle data. It is for M14/M1A that are limited due to the operating rod system. Try the non Service Rifle data a few pages before.
Hodgdon also has data for IMR-4064.
Reloading Data Center
www.hodgdonreloading.com
GoneBearing length certainly matters, but it’s not an input variable in QL so far as I can tell. I’m not sure what needs to be tweaked in QL to model that, but it’s something to play with anyway.
Seating depth/COL is an input with easily identified secondary effects though, even shooting the same bullet.
My point was that @nvrpc1 cannot expect different bullets with different effective seating depths (or bearing surfaces) to use the same powder charge.
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