My 7mm Mag cases have been reloaded 5 times. I noticed this time it seems like with FL resize I am barely getting them sized down to the right length. measure 4.0135-4.015 with gauge. My dies make very straight brass, .001 runout or less, which is great for basic RCBS. Other than shoulders, all else seems fine with brass(primer pockets, necks, no cracks, etc.). Does the shoulders get harder to bump back with more reloadings? or could it be my dies? PS my dies are set so tht I can't even cam over my press all the way, so there is no room left to adjust it.