Just recently ordered a 22lbs recoil spring and was wondering if I should have concerns using it in conjunction with firing ammo such a 115gr blue or Silver Glasers, or Magsafe 46gr and 96gr?

The spring will be fine if it functions with any other factory ammo which it should. But as always, make sure they feed/function fine especially from the mags. This can be a pricey experiment but worth it in the long run if you feel the need for this type of ammo.

I would make sure you know where the POA/POI is with these exotic rounds. At normal (whatever that is for you) CCW ranges there may be some variation. But that is often true for many brands and especially hand loads. At handshake ranges it won't matter.

Perhaps the best non-exotic type ammo is the 135 grain Nosler. In calibrated ballistic gel it is described as "frag nasty". It penetrates only 11 inches. Ouch.
http://www.ar15armory.com/forums/Official-...-ge-t40940.html

DT sells the stuff on this site and they are one of our sponsors.
http://www.doubletapammo.com/php/catalog/index.php

Thanks for the feedback. I just placed my first DT order a few days ago for some 180gr practice loads...looks like I'm about to become a repeat customer!

DT ammo is GOOD. My fav is 165 Golden sabres.