Just a bit of trivia....I was using H4350 or something like that (slept since then!) in a 22-250 Ack Imp and 68gr Hornady OTM and the barrel got hot real fast. On a whim I tried N140. Sheboygin! Could shot a whole string before having to let it cool. BTW, that 68gr Hornady was an awesome bullet, I'd use it on deer in a heartbeat. As it was I just used it on coyotes and PDs.
