Was reloading some .223 Remington Federal cases using Federal SR primers. Most primers seated with moderate effort (using Lee classis reloader) but every so often a primer would refuse to be seated. Primer pockets were clean. This this happen to anyone else? Would applying a little resizing liquid with a Q tip and allowing to dry help? Would rather the primer pocket a little small than too large, but am wondering if some of the Federal primers were just a little over size.