A few months ago I got to shoot what I think was a Kimber Model 8400 Sonora bolt gun in .204 Ruger. This was the stainless version with the fluted medium factory target barrel. Now that I recall it was a target version because it had no provisions for a magazine and was a single shot type rifle.(Load (1) round by hand per shot) The gentleman that owned it did a trigger job on it (and that was all he did) and it was a litteral tack driver. With this rifle I was putting holes in holes @ 100 yards. He said that it was pretty much the same pattern of grouping @ 200 yards.(near holes in holes) I have looked for this rifle in gun shops and in their catalog but havent found it in either the .204 Ruger or the .223. The only thing I can figure is that those calibers were discontinued for this model or it was a special order or mabey a limited edition. Anyhow, If you could get your hands on this Model Kimber in the .204 or .223 calibers, I'd say that, aside from a trigger job and a good scope, it would be all you need for this type of target rifle.
You could build up a Remmy 700 to do this as well. A trigger job or replacement aftermarket trigger and a Bell & Carlson or McMillan stock (The SPS stock is junk) SPS Remmy 700's go for around $500.00 to $600.00 around here, aftermarket stock will go for around $500.00 and a trigger job will cost around $30.00 unless you want less than a 3# trigger pull weight, then the gunsmiths around here will charge about $80.00 (liability costs they claim for less than a 3# pull weight) The Kimber Model 8400 Sonora I see on their web site has a list price for just under $1200.00. Either way the end price will be real close and either rifle I feel will deliver the same shooting relults. Holes in Holes.