710mm long slug barrel threaded for the Taipan Veteran. It is unchoked and has a 1:15 twist rate. The diameter is a true .22 so it likes to shoot larger diameter slugs best. I will be throwing sample packs of 32 different slugs worth $160 that are all larger than .218 diameter to test with the barrel to get you started. $250 shipped PayPal friends and family. Thanks for looking.