I have tried to stay out of this thread since most of what I had to say about Aguila ammo I had already said in the previous Aguila ammo thread which you can look at here.
http://smith-wessonforum.com/smith-wesson-m-p-15-22/479524-aguila-interceptor.html
But since it appears this thread is focusing more on the super extra aguilla ammo I figured I should offer my input.
The first thing I noticed in this thread is that some of yall dont shoot much. I dont mean this to sound rude but folks are talking about shooting a few hundred rounds in between cleanings. With my slide fire I am putting about 350 rounds down range in about 5-10 minutes. That's if were joking around and sharing the gun. Then that's followed by about 20 minutes of loading where everyone gets to load their next mags. This generally continues for a few hours. I would say I am shooting about 1500 to 2000 rounds in between cleanings on some of the heavier days. Most of this is one of the worst ammo's to use as far as gunk build up is concerned, the Remington golden bullet as I get them cheap and store about 7K on hand at any point in time. (as an off hand note I wish my buddies knew how much money we shoot off everytime they fire y gun....)
Currently I am attempting to figure out my slide fire so it will continue to function flawlessly through the whole 2000 round process but so far I have not been able to make that happen. Mostly due to lack of recoil not due to the functionality of the ammo although strange ammo things do happen.
When I hear of fouling at 200 rounds to me this sounds like over lubing the gun. One of the posters mentioned that he lubed the bolt at around 150 rounds. In these guns more lube means more problems. I dont run my gun dry but I definitely dont run it wet. I clean everything and then I use a light coating of CLP on everything. Once coated I take a fairly dry gun wipe and I take any standing or excess moisture off the bolt and anything else. I want the bolt to be smooth but if I can physically see oil then its way too wet. Generaly the bolt looks dry bit if you slide your finger across it you will feel that the surface is oiled.
I clean my rifle after every trip but this is more for accuracy then for reliability. After shooting some near 30 different HV ammos out of the 15-22 at all distances from 25 to 100 yards I can safely say what groups best out of my particular rifle. The winner hands down at all distances is.
The Aquila Interceptor.
This is a 1400+fps round that groups well all the way out to 75 yards. at 100 it will still group well but only if you can you shoot that well..... I have fired literally hundreds of these rounds and hundreds of other Hyper velocity rounds without a single issue with my extractor. However I did change to the Volquarsten extractor and I only have great things to say about it.
Read about them here.
http://smith-wessonforum.com/smith-wesson-m-p-15-22/464593-volquartsen-ectractor.html
As for the OP topic at hand I DO NOT like the aguila HV Super Extra as to me its accuracy is only good out to about 50 yards. Open it up past that and like many other ammos the spread becomes very unpredictable also as standard velocity of the "high velocity" ammos it can cause ejection issues, if you use a little hotter round these issues will almost all but go away. I noticed someone mentioned the federal automatch bulk ammo this is another ammo that works well at close distances but just wont hold up at farther groupings.
Now when your talking about accuracy remember that to really test the gun and the ammo you need to try two things. One is to shoot the ammo with a clean gun and barrel the other is to foul the **** out of the gun with around 500 plus rounds as the added build up of lead and powder can actually help ammos stabilize in the barrel this resulting in two very different outcomes.
For me I choose to test everything with a clean gun and barrel. My reason for this is that when I take my gun hunting I normally dont need to sight in and the gun was always cleaned at home so when I show up to go hunt rabbits etc then the gun is ready simply insert my salem 6 mags loaded with interceptors and off I go.
As for the fouling of aguilla ammo yes I would agree they have an odd chunky gunk that builds up some even with yellow tones in the powder but they still fail in comparison to the gunk of a remington golden bullet or the wax build up from the nomra tac ammo.
As for the failures to eject etc I would again recommend the volquarsten extractor as well as try running with less lubrication on the bolt and chamber. If your using the factorymags a Volquarsten extractor and a properly lubed gun I dont see any reason why you shouldnt be able to shoot atleast 500 rounds without an issue possibly much much more but remember .22lr is low cost ammo and many issues can be caused by flawed ammo or flawed after market magazines.
I hope this helps.
Alex R.