It wasnt a reload, factory LC69 as issued. Rifle was a DCM (pre CMP) rifle. Like I said, I was taught to slip a round into the chamber and let the bolt fly, and had always done so up to that point. I no longer do so.
As far as I've seen, the SLED is an accepted and encouraged device for single loading. If your not using one, then at the very least, dont let the bolt slam home, but ease it down and set it with the heel of your hand.
Fulton Armory has a decent read on the subject...
http://www.fulton-armory.com/SlamFire2.htm