Encore case issues

[Bill the loader]

I'm new to the hoard, so forgive my 1st thread. I'm never been able to get a round fired from an encore to work in a bolt gun. Is chamber size so loose in encores that case stretching becomes issue. I've loaded for other grenade shooters but only recently became one. I'm hooked now.

[kmon]

Did youget the Encore barrel new? if so I would be contacting the manufacture of the barrel about the chamber