Has anyone tried this on there barrels? It is a process that is supposed to improve accuracy, extend barrel life, and up tp additiopnal 60 fps. faster. I know this is not important to everyone, I just though it was very interesteing. they actually put your barrel in a dry powder I guess bring it down to -300 F over 48 hours and slowly bring it back and then go the other way to heat up to 300 F three times.
Any thoughts?? I guess military snipers etc. have done this...

It's called cryo treatment I think. It's supposed to stress relieve the barrel which makes it less prone to be POI changes when the barrel heats up.

Duct Tape it to the top of your brass tumbler for about 2000 rounds of brass and it will do very close to the same thing.

Thanks, just thought I would ask.