Looks like I might be getting a really good deal on a 22-250. The barrel is a 1 in 14 so the heaviest it will probably shoot is 55's. I have over a thousand 50 v-max that I'm not using and I already use Benchmark in my 223's. Anyone using this combo? Looks like BM won't be the velocity load which is no big deal but Hodgdons site says it'll work. How many rounds is average for barrel life assuming you don't overheat it?