YOSEY12: BEEN OCCUPIED GETTING READY TO LEAVE FOR ALASKA ON 5/24/19 AND TO GO TO MY RANCH ON 5/16/19 SO HAVE NOT PULLED OUT MY 5 FA 454's TO CHECK FOR FORCING CONE EROSION. DID CHECK MY MNP "PRACTICE" STALKER AND IT LOOKED FINE. IT HAS BEEN REBARRELED ONCE BUT THE CULPRITS PROBABLY WERE LIL'GUN POWDER AND/OR XTP BULLETS (THE NON "MAG" XTP's). BACK WHEN FA MADE BULLETS THEY EMPHASIZED THE IMPORTANCE OF HARD BULLETS, BUT AFTER FA SOLD THEIR BULLET MAKING MACHINES THEY JUST KIND OF QUIT EMPHASIZING "HARD" BULLETS. IN A PDF HANLOADING AID FROM FA, STILL AVAILABLE ON THE INTERNET, THEY STATE THAT HIGHER VELOCITIES AND SOFT BULLETS BOTH ACCELERATE FORCING CONE EROSION. LIL'GUN WAS ALSO A BIG FORCING CONE EROSION CULPRIT. I HAVE OFTEN WONDERED IF THE XTP MAG BULLETS ARE "HARD" ENUFF, AS I HAVE MY DOUBTS THAT THEY WOULD BE, AND I SHUDDER TO THINK OF THE HARM GUYS MAY HAVE DONE AND MAY BE DOING TO THEIR BARRELS WITH 240 MAG XTP's IN 454's AND 460's.

I THINK YOU HAVE 3 POPSSIBLE CULPRITS: 1) YOU USED LIL'GUN BUT HAVE FORGOTTEN YOU DID; 2) HV LOADS WITH THE 260's; AND/OR 3) THE XTP's. ONE OTHER THING, I DO NOT KNOW HOW BAD YOUR EROSION WAS, MAYBE YOU DID NOT NEED TO REBARREL? FA IS NOT GOING TO TURN DOWN A REBARREL JOB, SO WHO KNOWS.