Carbine ammunition is almost impossible to find here in Houston and when you do it's usually running $30.00 for 50 round boxes of FMJ of any manufacature. I have used Remington FMJ from the beginning of the time I got my carbine and it's good stuff. It's also just about completely unobtainable here now.

As to the Aguila, I find it pretty high quality stuff. It cycles the action reliably and is accurate, BUT it is loaded to below mil spec velocities which means at any sight setting it's going to shoot below the point of impact of mil spec. If you have adjustable sights its not a problem, just go up one click. Flip sights you'll probably wind up using the long range aperture to hit about where you were with the short range one, more or less, give or take.