A friend of mine burned his 7 mm RSUM barrel out in 570 rounds the bore scoped photos look like a 6.5 x 284 barrel after 1000 rounds, stress cracking etc. He is thinking about a coating. Salt-bath nitrocarburizing by Melonite, nitride coating or it has been suggested by several metallurgists...
In my area H4831 is becoming harder to find, but everybody seems to have H4831SC availiable. I have a 308 norma mag that loves H4831. But everybody tells me the two powders are the same. Can anyone give me rock hard evidence of this. I have a match this weekend and I don't need any surprises.