You ask for recommendations for a good brush gun in a carbine, something in a versatile caliber.
May I suggest the Ruger Compact n 7mm-08 or .308? And a Marlin .30-30?
You also ask about accuracy. All I can say is that every Ruger bolt rifle I have had an opportunity to shoot has grouped under 1" at 100 yards. My Ruger .22-250 recently put 4 shots into .5" at 200 yards, my Ruger 7mm Mag shots .5" at 100 yards, and my buddy's 7mm Rem Mag shoots .4". In January I picked up a used Ruger in .257 Roberts and it is another half-MOA shooter.
And the three Marlins I have shot (.30-30, .375Win and .45-70) will do 1" at 100 yards with the right loads. For fun, a levergun beats a bolt any day, IMHO. My buddy and I shoot our Marilns at 200 yards on a regular basis and at 300 on occasion. Last fall I had an opportunity to shoot the 500 meter rams at the NRA's Whittington Center with both the Marlin .375Win and .45-70. Was knocking them down on a regular basis and downed 2 on the last 3 shots with the .45-70. How much accuracy do you need?