Re: 338/300 rum using us869
I don't know what Lot # I'm using.
In my 338RUM 101gr behind the 300smk produced 2730 FPS.
The label says 338 Lapua & 104 grains 300gr Sierra HPBT (I suppose that's the SMK) goes 2677.
Load density is good and SD and ES both were less than 1, accuracy was a bug hole's bug hole si I quit shootin' and went huntin'.
You could start @ say 98 amd work up one grain at a time and be comfortable.
Keep us posted....
AKA - the guy who knows the guy who
will be heralded as the man who kept elk from extinction.