Cheesy: Why not just load a 140 partition and shoot EVERYTHING with it. There will not be a dimes worth of advantage going to anything else. Then you can stop tormenting yourself over "this bullet for this" or "that bullet for that". If you work up a load with a Partition, you can stop looking for anything else....




The 280 Remington is overbore.

The 7 Rem Mag is over bore.