First time poster. Thanks for all the information on the SA-20 you regulars have posted.
I have a brand new SA-20 Tactical. Was happy to see the Mag Follower (11) was RED. Simplifies "chamber check, mag check". If you see red, no shell in mag. Removed the Mag Plug (14) for a "1 in chamber, 5 in mag" capacity. Ordered the 2 shell mag extender. Read all the problems with various ammo.
This morning I shot the following sequence:
Winchester Super X, High Brass, 2-¾", ¾ oz. 1600 fps slugs. Shot 60 rounds (10 6-shot loads) and the SA-20 cycled flawlessly!
Remington Slugger, 2-¾", 2-¾ Dr Eq., ⅝ oz. hollow point rifled slugs SP20RS15. 60 rounds (10 6-shot loads) of flawless cycling!
Winchester AA, Super Sport Sporting Clays, 2-¾", 1300 vel., ⅞ oz. 7-½ birdshot, low brass. 72 rounds (12 6-shot loads) and the jams started! Almost every first shot did not eject and half the time the second shot would not eject. The following 4-3 shells in the mag would cycle successfully.
Winchester Super X, High Brass, 2-¾", 1220 vel, 1 oz. 6 birdshot. 60 rounds (10 6-shot loads) and SA-20 experienced only 3 ejection failures.
As expected the two different brands of high brass, high muzzle speed slugs cycled flawlessly.
The high brass birdshot had a couple failures.
The low brass birdshot had many failures.
I'll do a complete cleaning and polish the chamber (stiff brass bristle brush w/fine steel wool and maybe polish some of the bolt assembly slide areas as described in this forum and see if anything improves.
Thank you! Thank you!