Id like a 5 round aics mag for my 204 and accurate mag make one. Did you have to alter your accurate mag in any way to get it to work for the 204 ?
They won't load 20 Tactical either. Body taper is too straight, and the feed lips are "padded" by the plastic insert. For .223 they work really well, but straighter tapered cases...not so much.
So, a byproduct of this thread is that it got me started fooling around with my 5 rd 223 AICS accurate mags.
By Jove I think I've got it! And this trick improved the feeding of my 10 rounders too! (which were already quite good…memory is a fickle thing, see below).
So, the shoulders on the 204 are much further forward than the 223's. What I noticed is the plastic insert on my mags followed the shape of the 223 round pretty closely. The shoulder part of the plastic bit was pinching the 204 case.
After disassembly, first I used a 204 round and moved it up and down the plastic insert to see where it was touching. It leaves a little bit of brass on the plastic. Then I used a very sharp chisel to carefully slice away some of the plastic. You could sand it, but that will take a long time. After a few rounds of slicing, rubbing the brass, slicing, reassembly, testing by loading rounds and sliding them out with my fingers, voilà! 204 pops up with authority just like 223 rounds do.
I then sanded the areas I cut with 400 and 1000 grit sandpaper. Washed off the particles and I'm done.
The fickle memory part: So I had said that the 10 rounders were "flawless". Well, silly me. When I was messing with the 5 rounders I decided to also see how the 10 rounders worked up-close by sliding out rounds with my fingers, just like I was doing with the 5 rounders.
What I noticed is with the 10 rounders is sometimes the rounds popped up in slow motion (not ultra-slow motion like the 5'ers, and not getting totally stuck either like sometimes on the 5'ers).
They did all pop up, but it trigged a memory of being out in the prairie and occasionally trying to cycle the bolt in the heat of the moment and it stopped. I'd back off and try again and it would load a round and I'd go shooting on my merry way. Didn't think too much of it as it didn't happen much. It must've been the bolt pushing the round against the mag interior before the round got all the way up! D'oh!
The 5 rounders were much worse than the 10 rounders for some reason, but the root cause was the same.
I've got a few mags done and I'll go test them at the range. They work great in my hand and cycling through the rifle.
I do believe I've got it licked!