Best powder for 6.5 Grendel. 85gr - 100gr Accurate 2015 Accurate 2200 Accurate 2230 Accurate 2460 Accurate 2520 Shooters World Rifle Match same as AA2520 H-332 H-335 IMR 4198 H-4198 Ramshot TAC Ramshot X-Terminator IMR 8208 XBR Vihta Vouri N120 Vihta Vouri N133 Vihta Vouri N530 Alliant RL15 120-125gr Benchmark BL-C2 Hodgdon CFE 223 H4198. Were first looking at this E-Lander AR-15 Magazine made expressly for 65 Grendel cartridges and it goes with a matte dull covering. 26 Nosler Load Data.