Im getting ready to purchase a predator rifle, I have narrowed my findings down to .223 or .22-250. While doing a boat load of research, my findings are making me lean towards the .22-250. The only thing I have not found an answer for, what is the estimated number of rounds through the barrel of a .22-250 before it needs replacing. I have read all over and been told by many sources that it will eat the barrel, but how fast, how many rounds??