FX Crown/Dreamline magazine questions

I have a Crown and DL tactical, and got some QD Fox mags on trade. The factory mags work fine in both rifles, no problems at all. The Fox mags work in the Crown and are a solid tight fit. But the DT is another story, they will try to fall out when cycling the bolt. The DT seems to have a much wider port for the mag, and I'm wondering what the problem is. I mean, there's a friction oring on factory mags that hold them solid in both guns, but the Fox mags have nothing. So is it the barrel protrusion that is making the difference? I haven't had time to measure the opening, but it must be a factor.

Just wondered if Orion mags would work any better in the DT????
 
Try loosening the barrel retention screws on the DT and see if you can seat the barrel a little further into the breach. If so, that may some your problem. I find I have to test fit the mags before tightening the barrel retention screws when swapping barrels because if I don't there are time I can't get the magazine to fully seat because of the tight fit.
 
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I don't have that issue with my QD mags, but MY issue is they don't like to cycle very well for my Crown Mkii or my Impact M3. I have to constantly jiggle the carosel for it to forward to the next round. Happens more times than not. Sux for when I am going for a quick follow up shot and the probe meets resistance because the mag didn't advance properly.....