A 260 - 320 good cast bullet at subdued velocities will have no trouble pushing through an elk. 13grs of HS-6 will speed things up to the 1000 - 1100fps range and still easily handled. The A frames and XTPs will work but usually need velocity to be very accurate.

"If you get to thinkin' you're a person of some influence,try orderin' someone else's dog around" unknown cowboy