Chuck, My suggestions are only based what has worked for me for many years. Browning Superposed shotguns were known to have the ribs get loose and through the years I have used Tix without a failure. Shooting doves in Mexico on a hot day certainly gets the bbls hot. Brownells, only place I have ever bought Tix, claim in their catalog that Tix melts at 275. I am certain, having taken measurements, that it doesn't take a lot of heat on the typical bbl. to cause it to shrink. My experience in metalluragy is limited to pratical machine work. My business, that I retired from and sold after owning it for 25 years, was at first the Rebuilding and marketing of vehicle A/C Compressors and the last 5 or 6 years developing and manufacturing a new aftermarket compressor. At the onset of the new compressor design I hired an engineer from GM and certainly do understand that sometimes one can just be lucky with their results. Still I can attest to the Tix working for me. Regards, John Hancock
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