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If you look at loading data in manuals for Garland/m14 match loads with 165/167 you will see the powders are faster ones 4064, etc. 2208 will be fine.

W760/H414 or the Belmont equivalent is...

2209 is the go if you have it, but 2208 and quicker powders will work in the 06.

With 2209 and a 180 gn pill, 56 of 09 is about where it’s at ~2700 ish fps, up to 58.5-59 with a 165 for 2900 fps...