I made my own mag adjustment tool. I also made a "fixture" to adjust / bench test a mag before they even touch an action. I made a video where I had 250 Improved ammo/brass feeding/ejecting like clockwork. BTW, its follower spring tension played big part, or where "less was more"!

BTW, the USPS nag delivered my two extraction/ejector kits from Tactical Supply on Saturday. One fixed a 260, the other for a spare in case....."