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imr 7878 loads

Assuming you mean IMR 7828, QuickLoad reports 81gr in a 338 LM with a 300gr SMK to be over pressure. Any signs of excessive pressure?
 
No I started at 79gr and worked up to this it was listed as max on imr load data . Its all I can find right now and it has several loads for my 300 wm also .
 
I have no experience with that load and quickload is not usually 100%. As long as you are comfortable with the pressure

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Thanks for the input.I get up your way once in a while my son bought a place in gladstone in june .
 
Just loaded 300 wm with imr 7828ssc. 73gr, 208 amaxx, cci lr primer ( not a mag primer). Average 2800 fps. 18 fps spread. About 3/8 group at 100 yards. This was shot out of a 26 in barrel. I think it was around 30 degrees when shot thru the chrony.


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