Its hard to beat a lever gun for brush country. .30-30, .35 Rem, .444 or .45-70, take your pick.
My .30-30 was used and cost me $225. It pushes WW Power Point 170g bullets out the muzzle at 2160fps. Zeroed for Maximum point Blank Range for a target 6" in diameter (the bullet is never more than 3" above or below line of sight), the bullet is +3" at 100 yards and down 3" a bit past 200. Energy at 200 is still around the 1000fpe mark. The .45-70, a $250 rifle used, has a similar trajectory with a 350g bullet at 2183fps but recoil is significantly greater. My last bull fell to the .45-70 at 213 yards, dropped in its tracks. In a pinch the .45-70 will do out to 300 yards if properly sighted - drop is about 22" but energy is still 1550fpe...