Please see the postings by the retired gunsmith lowegun here:
http://rugerforum.net/ammo-dump/59818-copper-plated-vs-lrn.html
I found his several posts in that forum thread very informative and much better thinking than buying random ammo to "see what your gun likes". No, it isn't random. Your gun is tainted with whatever history it has. If there have been thousands of rounds of lead round nose shot in it, especially target grade, the vapourized wax coatings have been sent back into the action by blow back.
We have two clues there is something up with the target match grade rounds and LRN. One is the posting by this retired gunsmith, who appears to know his stuff. The other clue is the existence of Winchester M22. What is it about certain ammo being suitable for high volume and others not?
The complicating factor in all of this is how your gun shoots, has failures, etc., isn't always due to the ammo you are shooting at the moment. It can be gummed up by the ammo you were shooting before, or from excessive gun oil. Guns are mechanical, not electronic, so the physical properties of wear and gummed up parts can carry forward into the future and have little to do with the ammo brand you just put in them.
My take away from the retired gunsmith is to use target grade in target rifle barrels which require it. Use copper plated in semi-automatics like the 10/22 carbine.