There is one worse than .357 Magnum... .22 Jet...and my S&W 53 had over 1000 rounds of Jet through and after the initial flame cutting it stopped. Saw a post the other day of someone who had 5K of Jet through a gun with no problem...so it isn't a problem unless you have an aluminum frame gun like the S&W Airlites...that is why they put the stainless steel flash gap protector on them...you will ruin a gun if you continue to shoot them after the protector is used up...

Bob

If you can not deal with reality, reality will deal with you....