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I would call first, and expand your pick in powder, there are many that will make it go boom for you.
Head north, Shooters outpost, Riley's, both in Hookset NH. I have had good luck at Kittery trading post and Cabela's Scarborough, Maine too.
I would call first, and expand your pick in powder, there are many that will make it go boom for you.
Try Al's Gun & Reel in Derry first if you're heading north. He had lots of powders every time I've been there and no silly limits.