I bet most are wore out from not cleaning orimproper cleaning, or over cleaning.

I have over 20K through mine and it shoots as good as it ever did. I boresnake it (brush removed) about every 100 or so rounds and really clean it every 1000.

i've had the same 10/22 since 73' or so. i usually keep it in my truck year round for critters here on the farm. no telling how many rounds thru it. still accurate and goes bang everytime. i'd just go shoot and not give"wearing it out" another thought.

I'm with stalkingbear .... give me some money and I'll let ya know in a couple months!
-Jake