My friend and I bought identical Rem 700 SPS Varmint 243's. We bought Holland brakes and has a local machinist install them. 10X-40X 60 mm mil dot scopes. near 1/2 moa at 600 yards. Range master verified 3.21 inch 10 shot group. Just using off the shelf hornady cheap 100 gr spbt.
The 26 inch barrel gets them going 3200 fps. I actually loaded to over 3300 and toned them down for the sweet spot.
If you set it up with all the ballistic charts and atmospheric conditions. Hunting is more like harvesting. dial in you scope and you are good to go.