IMR 4166

IMR4166 is my 'go to' powder for 69 and 77 grain bullets with my .223 bolt action.
It has a very slight performance advantage over N140 and costs less.
I have never shot the Barnes 62 gr TTSX with it, or any other powder for that matter.

With all the shortages, I have been using N140 of late because I have only a few lbs of IMR4166 and 12 lbs of N140.

Can't seem to find any IMR466 so I'm keeping what little I have.
 
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