I have had many Ackleys. The most "not worth it" for me has been 2 30-06 AI. One in a rechambered 22" ADL and another in a 26" Shilen. "Maybe" with 150gr it was a bit faster, but honestly, it never gained more than 50fps "with any kind of accuracy. Sure, you can push an Ackley to 74K quick, but seldom is it accurate. Rifles are a gamble, as you might spring for a custom .280 AI or even a .280 Sherman...and barely beat a 24" .280 for a combo of speed and accuracy. If you can handle the recoil...300WM through 338 RUM are flat shooting, hard hitting rounds. If you "know" you will be cruising timber, closer shots, the 338/06 to 35 Whelen AI, or 9.3x62 will hammer them down! Have a ball though!
