I've just managed to get my hands on a split mint Tikka M695 in .30-06, only had 200 rounds through it but it's not threaded. Going to stick a mod on it for obvious reasons, but wondering about having it shortened at the same time. I realise top end performance could be lessened by shortening it, but just fancy it a little less pokey in length. Current factory barrel is 22". How much can I get away with lopping off - 2 or 3" ?