I have two factory full choke (35 thousandths) standard rib barrels I am not using. One is 33” and one is 34.” They both shoot 90/10 where I have my pfs standard comb set. They are both set up to extract only. $900 each or $1700 for both. I think the 33” could shoot as low as 70/30 with no gap between the beads. 33” is on top.
Price reduced to 750 per barrel delivered. Wilkinson has a Silver Seitz in his shop. He can work one for you while you keep and continue to shoot your gun.