I have a Remington 700 in an SPS Varmint 243 (26" contoured bull barrel).
The Rem 700 has a lot of aftermarket stocks offered out there and is a proven action and barrel.
The SPS Varmint comes with a relatively poor synthetic stock so I also have been researching to find a thumbhole stock that will be strong enough to free float the barrel (this model has pillars).
Here are my final choices but I will likely go with the Boyd's:
H-S Precision synthetic
($400+) high end
has medium priced synthetic pistol grip sniper stocks that are popular ($226)
Thumbhole wood laminates seem to be the cheapest and potentially strongest for free floating the barrel (many bed their actions in steel epoxy).
They offer a featherweight which approximates the original weight of my synthetic stock ($54 if unfinished)
p.s. one of our forum members recently bought this same 243 Varmint SPS and had small 1.5" groups at 500yds. with the barrel right from the box (if he is telling the truth)
Amazing range results!! Take a look!!
I have only shot about 25 rounds out of mine so far so am not sure what it will do at that distance.
Hope this helps,