A little while back I was able to get blued Canadian factory Para 38 super mags to feed 9mm reliably through my P18.9 by compressing the mag bodies and switching to ISMI 140mm springs. The original mags came with +2 para basepads to hold 20 total.
Now I know 9mm is not going to be competitive shooting anything else but production in USPSA unless I load 9 major in Open, but I would consider myself a novice and only shoot club matches (limited minor) and steel.
I made the decision to purchase Dawson Extended basepads to add 3 if not a couple more rounds. I was told that I wouldn't need basepad inserts so didn't get them at the time. Well to make a long story short, I shot a steel match last Thursday and during one of the runs one of mags topped off with 22 rounds stopped feeding. When loading to capacity one of the rounds toward the base of the mag would move itself between the follower and the mag body. If I loaded to 20 it would feed reliable, which kinda defeats the purpose of buying the dawson basepads because my stock mags already fed 20.
Today I ordered Arendondo purple inserts for 38 super from Dawson to remedy the problem. The problem is when doing research for the Para mag/Dawson basepad nobody mentions needing the insert, just spring, follower, body and base. I should mention that most of the forums I searched the were shooting 16.40 or 14.45.
Finally my questions. Do I need mag inserts like the arendondo to make 38super or 9mm run reliable in the factory blue para mags with dawson basepads? How my more rounds should the Dawson basepads add over factory when loading 9mm? Should I get Arendondo followers too? What spring, follower, basepad combos work best for you?
I realize this is a long post, so thanks for taking the time to read it, and thanks for your advice in advance.