simple magazine mod
not all of my projects involve bluing, I did this mod to my Ruger Mark II magazines to help prevent stove pipe jams, it must have worked, I can run any ammo in this gun and never have a problem (even that crappy Remington green box stuff). You simply round off the rear feed lip, so it is no longer a sharp 90 degree angle.
Thanks to Xavier for this one!
http://xavierthoughts.blogspot.com/2008/10/mkii-magazine-tweak.html