I'm trying to get a couple AICS mags feeding right for a friend in a .308 I built him, and they're being uncooperative. For reference, my unmodified mags feed flawlessly in this rifle.
The feed lips had been tweaked already, so I brought them back into spec. I've played with different adjustments, but currently the rear is about .405, about the same as a factory mag, and the front is a few thousandths wider.
The springs on both of his mags are longer than mine, but he says he hasn't stretched them. I did try adjusting one of them to put more pressure on the front of the round; it may have helped, but it didn't fix the problem.
The mags feed like butter for 6-7 rounds, and then a round nose dives. Even when loading the mag, it doesn't appear to be pressing the round against the feed lips at the front very solidly.
Anybody else run run into a problem with AICS mags nose diving? I don't think it's a feed lip issue, the round isn't even hitting the feed lips when it jams. Are replacement springs even available for these mags?
Loaded mags- bad mag on left, good on right.
http://img.photobucket.com/albums/v217/Red_Sc/Misc/74B37124-0EC4-4DB1-A682-56E2A97C0C16.jpg
Bad mag not lifting front of round
http://img.photobucket.com/albums/v217/Red_Sc/Misc/0AA05979-DC03-4BCE-A785-5C2DFFA3EB34.jpg
http://img.photobucket.com/albums/v217/Red_Sc/Misc/B5DDCEAD-322A-4E0F-BFA3-EEFE831542C1.jpg
Rifle about to jam
http://img.photobucket.com/albums/v217/Red_Sc/Misc/21F41BD4-9A08-44B8-BB73-0139D2ED8928.jpg
Springs- bad mag on left, good on right.
http://img.photobucket.com/albums/v217/Red_Sc/Misc/CEBA2D08-739B-4B27-BB3F-3298096DA955.jpg
The feed lips had been tweaked already, so I brought them back into spec. I've played with different adjustments, but currently the rear is about .405, about the same as a factory mag, and the front is a few thousandths wider.
The springs on both of his mags are longer than mine, but he says he hasn't stretched them. I did try adjusting one of them to put more pressure on the front of the round; it may have helped, but it didn't fix the problem.
The mags feed like butter for 6-7 rounds, and then a round nose dives. Even when loading the mag, it doesn't appear to be pressing the round against the feed lips at the front very solidly.
Anybody else run run into a problem with AICS mags nose diving? I don't think it's a feed lip issue, the round isn't even hitting the feed lips when it jams. Are replacement springs even available for these mags?
Loaded mags- bad mag on left, good on right.
http://img.photobucket.com/albums/v217/Red_Sc/Misc/74B37124-0EC4-4DB1-A682-56E2A97C0C16.jpg
Bad mag not lifting front of round
http://img.photobucket.com/albums/v217/Red_Sc/Misc/0AA05979-DC03-4BCE-A785-5C2DFFA3EB34.jpg
http://img.photobucket.com/albums/v217/Red_Sc/Misc/B5DDCEAD-322A-4E0F-BFA3-EEFE831542C1.jpg
Rifle about to jam
http://img.photobucket.com/albums/v217/Red_Sc/Misc/21F41BD4-9A08-44B8-BB73-0139D2ED8928.jpg
Springs- bad mag on left, good on right.
http://img.photobucket.com/albums/v217/Red_Sc/Misc/CEBA2D08-739B-4B27-BB3F-3298096DA955.jpg
