22-250 caliber custom. Called the smith and just happen to get him on his mobil phone and he tells me its because he chambered it with MINIMUM chamber for headspace control ( I think thats what he said???) Reloaded ammo or factory fresh, the bolt goes closed to within 3/8-1/2 inch and then stops...dead. Sometimes I can RAM the bolt home ...other times NADA...no way. Im told I have to move the shoulder back just a tiny bit ( ????) Im using Lee brand dies in this caliber, and they get screwed into the Rockchuker until they hit the shell plate and then "about" 1/4 turn more. Other than that...Im lost??