I have been having trouble with too tight primers on some old Frontier and Norma brass .The Frontier is 7.5 Swiss and the Norma is 6.5 Swede .I use a Lee hand primer and broke the handle last night and they were going in very tight .Some didn't even set flush so had to reset them with my loading press . Im using Winchester primers and they Mic .210 so the size is right .I wonder if there is any way to loosen the pockets ? Usually with federal brass I have opposite problem . Arnie