Dumped the old IVI ammo and went with some Federal XM80CS. Firing pin is good. Headspace has always been good as it's a new barrel and I do check them all. Trigger resets as it should and passes all the required tests. Tore through 150 rounds this morning and not a hitch. Best part was giving a couple of folks who have never shot a Garand a go at it towards the end of the test firing. Smiles are contagious that's for sure.