6.5 grendel vs rem.700 sps tactical acc sd in 308cal.

[jsolo]

I want to find out if my alexander arms 6.5 grendel which has a 18" barrel fluted the upper is viltor mono.The rifle is a gas piston.Is there any way I could out shoot my remington it has a 20"barrel with the acc cap for a supressor.It also has a AICS chassis and a harris bipod.I would want to shoot from 800 to 1000 yards.I would use hornady 123gr a-max 6.5 grendel I will have to get some match ammo for the 308 and will use a millett LRS 6x25x56 on both rifles. My question is this will the grendel shoot better groups both guns have very low rd. counts the rem. is a 700 sps tactical acc sd 308cal.