If I was going to want a the Ackley version, I'd start with a new barrel. Pillar bedding is the way to go when bedding, especially with a wood stock. And that pressure point in the barrel channel can be tricky to tune. Some shoot better without it, some just need the amount of upward pressure "tuned". A good trigger is a must. Jewel isn't a 'must have', as they are nice, but a Timney or Trigger Tech would suffice just fine on a hunting rifle. If a guy can't shoot a crisp 2 1/2lb trigger, it's probably NOT the triggers' fault. When installing a new custom barrel, have the lugs lapped, receiver face squared and the bolt face cleaned-up square. If you'd go with the 280AI I'd go with 23" for the barrel, minimum... 24" wouldn't hurt, but would ruin the lines of the light rifle. I see that you've tried the heavier factory ammo offerings. Try some 140g, if you can find any. Rem factory barrels of old were/are notorious for coppering up bad, and they were hammer forged which induces a lot of stress in the steel, which will cause the barrel to 'walk' its shots as it warms. A good custom barrel is hand lapped (which will greatly reduce copper fouling) and stress relieved. No comparison between a custom fit, custom made barrel and a Rem factory barrel.