How old is the manual? I got some Unique a few months back (with the new canister color scheme) and it says "cleaner burning." That tells me that something has changed, and it's possible the manual you have is for the older powder.

I use 9 gr Unique with a Silver State 240 LSWC and CCI L.P. magnum primer and it runs fine through the M629 6.5" and M94 Trapper rifle.

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