It's summer and raining, so I thought this piece of work ought to be resurrected
I did this modification and then reversed it with a pair of screws on the other side to go back to original length of about 0.100" over the original limit. When you use the long shells at the full rear position, the follower tends to pop up and tilt the rear of the shells to low to feed. I leave it in the short mode for rounds of conventional length.
Besides dedicating this magazine for your Longer COL Cartridges (you could run another of standard size for your shorter cartridges)...
...a Scissor Spring powering the follower will, and does, cure all porpoising.
