I've not run a .280 Ackley much (would do so in a heartbeat), but I can't see observing too much of a difference betwixt a great 7mm 160gr bullet traveling 2950 (from the .280 Ack, which I believe to be a very plausible figure with a 24" tube), and the same bullet moving 3050+ (from a 7RM, which I shoot with an uncompressed charge of Retumbo). Both are going to absolutely smack critters and be dirty bastiges in the wind (I'm thinking 162 A-Max here).
Both are sweet azzed carts, but I'm particularly loving my 7Rem Mag. Out of the sub 9lb rifle I'm shooting it in right now, recoil prone out of the dirt is absolutely a non-issue. But I ain't a big old wuss, either... grin
