Hi Petter. Thanks for posting to the forum. Let me ask for more information, which others will be interested in I'm sure.
- do you know what year the 300 Win Mag barrel was manufactured? Or when you bought it perhaps?
- can you describe its condition? How many rounds fired? Hot factory loads, or milder handloads? Or hotter perhaps?! Well cared for?
- what sorts of adventures have you had with this 300 Win Mag barrel? A trophy bull elk, knocked over at 200 yards? Or perhaps an extra thick piece of parchment, that took three shots to kill, all arranged in a neat 16mm group? Favourite load?
- do you have any special plans for the 375 H&H barrel you're after?
Good luck with the trade.
Regards, Rick.