RE: .220 swift
Here's two of my favorites. Both use Winchester brass and Remington 9 1/2 primers:
1. 55 grain Nosler Ballistic Tip. 39.0 IMR 4064
2. 50 grain Hornady V-max. 40.0 RL 15
Either one will shoot bullet holes touching in my Remington 700 Classic. Per normal reloading procedures, back off 10% and then work your way up to any full throttle load. Good luck. Roskoe
Disclaimer: these loads worked great in my gun, but might blow your gun up. Proceed with caution.