There must be alot of people shooting reloads thru their M14's, can anyone comment further?
The M14 is not a forgiving mistress when it comes to reloaded ammunition. First off the thing was designed to fire 7.62 ball ammo(that would be new, not reloaded 7.62), not softer, thinner walled commercial .308.
Second, the chamber is generous in size as are most military firearms, this causes the case to expand more when fired. Third, the action is very fast, causing the fired case to be stretched as it is yanked out. The cases are weakened by this, much more so than a tightly chambered bolt gun. Resizing them back into shape takes quite a toll on the brass. Fourth, having a floating firing pin, the rifle upon loading, can slam fire, or worse fire out of battery if the reloaded cartridge doesn't go smoothly into the chamber (IE: ovaled case or chamber) or the primer is protruding from the case.
You can more easily get away with less than perfect reloads using a bolt action, as it can cam the round into place unlike the M14.
If the person reloading does something dumb, IE: too much/wrong type of powder, the M14s can or will KB, causing most everyone to point their fingers first at supposedly 'shoddy Chinese' workmanship. There are other technical factors as well, such as the head space on most is over what is considered safe by SAAMI specs.
All in all it adds up to a perfect storm for the potential of a KB if something ain't right along the way.
But there are many, many people that reload for the thousands of these things out there and they haven't had a KB, so YMMV.