That is true , with the Contender you can be in spec. by the book and still have problems with the bolts in the gun BEEN THERE . There is more wiggle room with a rimmed case . I loaded for the encore - 204 , 708 and 300 win mag. For the Contender - 223 , 357 herret , 7X30 waters , 30-30, 357mag,357max 45 colt , 44mag 7TCU , and others for friends .