We also sell .036 gage pins to know if its time to replace the vent liner (they start about around .030 and grow as you shoot).
Note: the original all black Savage vent liners are slightly shorter than our Lehigh Ventliners. If you don't clean the threads that the vent liner screws into after removing one of the shorter vent liners, the new vent liner may not fully seat. Some folks get confused and think our vent liner isn't compatible: it is compatible, you just need to clean those threads! Try soaking in penetrating oil or ATF then either using a small wire brush or chasing the threads with a tap to get all the crud that impacted in the threads loose, then our vent liner should thread in and seat flush.
Badger Ridge Industries PO BOX 223 Fostoria, MI 48435