RE: BARNES Spit-Fire MZ
Never miked any Big Country.... just have shot two Discs recently & the widest diameter sabot/bullets I have in .452 go down the chute without getting blue in the face like they do with my Omega...lol
I do mike all my bullets thou... even take the micrometer, scotch tape & sharp, thin blade with me bullet-shopping. When I purchase some, I get back into my Chevy Colorado 4X4 & proceed to open the package carefully without destroying it. I grab the micrometer & measure the bullet I just purchased. If they are too wide for my liking, I mend the package with scotch tape & go back into the store for a refund or exchange on another purchase.
This wasy, there's no wasted gas & my precious time returning them from home... possibly 5-10-50 miles away.