Need advice on load for first long range rig

[Matt_3479]

Just picked up a Remington xcr tactical swapped out and thrown into a hs precision stock, aluminum bedded, tactical bolt knob, muzzle brake with a NXS 5.5-22x50mm on top. Grabbed some h1000 powder, 210 berger vld's, rem brass, rem 9 1/2 m and federal 215 primers,. Wouldn't mind some advice on where to start and overal length! Anything would be great