My problems with the Cooper (Phoenix with the synthetic stock) were partly my own fault. I ordered the Phoenix, not realizing that the heaver varmint contour would not allow low mounting of the scope objective bell. With the low comb my cheek wouldn't touch the stock when sighting through the scope. My second error was the caliber - 6.5 x 284. Now with the recoil level of the cartridge, the eye relief of the Bushnell 6.5-24 Elite 4200, and not being able to get a cheek weld on the stock - I came away with a bloody laceration where the bridge of my glasses were smacked by the scope. So, I strapped a tactical cheek rest to the stock. That helped. Then it became obvious that the forend is too round and not wide enough for a varmint stock, it's slick as glass, and it squiggles around. Couple that with the heavy and inconsistent trigger pull - and everything works against me. Things may have been better had I ordered a wood stock. I made some poor choices, no fault of Cooper. The trigger is still the weak link.
My Remington 700 laminated thumb hole stock was ordered with extra comb height and cheek piece thickness, so that after bedding and scoping I could fit the stock to provide a contour that fit my face and lined everything up off the rest. Same with the stock on the old 40X - I custom fitted it. Best accuracy requires a stress free bedding job with pillars and a completely free-floated barrel. That eliminates the pressure sensitive forend hassle -usually.
The Remington 700 chamber was setup with dummy cartridges I made up so the throat length is ideal and so is the neck diameter for the components I chose. The Cooper is a factory rifle set up with a long throat for 140 -142 grain bullets, that isn't ideal for varmint weight bullets. Everything factory is a compromise.
I still theorize that the new Savage Precision Target Action is going to be the answer to all this. The trigger is fantastic, the price reasonable, interchangeable parts and caliber swapping provide enormous flexibility. If the twist doesn't work with a bullet - then swap the barrel in five minutes or so. When my Shilen barrel and McMillan stock (with a high comb) arrives I'll put it to he test.
Bottom line, the Remington 40X is designed as a target rifle out of the box. Remington offers the 40X with a thumbhole laminated stock as a single shot or repeater, a tactical version with two different McMillan stocks and a Harris bi-pod (that stock is available after market) and several other configurations. The Cooper is a hunting rifle and sold as such. Best fit and function is obtained with customized features, no matter the brand, but Remington offers the most choice for a factory rifle. Too dang many choices.