Hmm, after watching some people shoot at 1 k+ who can and did at IBS 2 I have doubts about defining LR as 500yds to a 1 k as a long range rig anymore. Numerous folks shooting and hitting targets to 1792 yards were using bigger cartridges than 6mm. Seems like most of those 1 k to 1800 yd rigs started at 6.5 cal. Scenarshooter was whacking the 1 k target with a 6mm using the 115 DTAC on a AR build.His advice would sure weigh heavy with me if I was to build something for this use. You did ask for opinions right? Magnum Man