I have been down the road of a throat burner before and was frustrated by loosing a barrel at 800 rounds, not so much on the cost, just the pain of shipping, time away etc. Would melonite or similar salt bath help mitigate the erosion and extend the throat life?

Hunt hard, kill clean, waste nothing and offer no apologies.

"In rifle work, group size is of some interest...but it is well to remember that a rifleman does not shoot groups, he shoots shots." Jeff Cooper