In my experience, Winchester are next in ease to ignite. CCI are the hardest. Honestly though I have switched to Wolf and they work flawlessly in all of my firearms. If it were me and I was out of Federals, I would take a spent primer and put it under my strain screw, or make another one that is just a tad longer, and make the action just a little stiffer and use whatever I could get a hold of.
It is better to shoot than to sit on the sidelines!