GeorgeMac

@98Z5V Thank you for confirming the bullet length of the 108's. That was the one data point on those rounds I was unsure of. @shooterrex Thanks for the 16" barrel velocity. It will be nice to have a spot to see what velocities people are getting with different barrel lengths, and projectiles.

Would any of you mind checking my data for Hornady Factory 108’s? I haven’t pulled a round to confirm length. (Playing with different ballistic apps and velocities to put together “rough draft” dope cards for the 12” and 14.5” barrels. If anyone has data on other 6mm rounds for 6ARC reloading feel free to post it in the thread for a reference Hornady 6mm 108gr ELDM Diameter: 0.243 Length: 1.2680 Weight: 108gr Drag G1/0.536 - G7/0.270

@MtnMike We'll have to meet up for a range day and maybe a beer in Hendersonville. I hear the German place is very good there. I've spent most of my adult life bouncing back and forth between ACOG's, EOTECH's, and precision glass for work and play. However, now I'm experimenting with a whole new "glass" challange.... readers and an astigmatism. Apparently my eyes are starting to get as bad as my dad jokes. I've got one of the new reticle 1-8x NX8's on backorder as well as a 1.7" mount. I plan to use it with the 12" 6ARC when it eventually ships. The great team of folks at Nightforce are saying late November early December. Though "on paper" the 6ARC 108's should be traveling at 1130fps out to 950 yards or so, I don't always believe my data is correct until I can actually validate it, or at least speak with others solving for similar problems. Very excited to see how far out I can consistently make hits with 8x glass and 108's. Love to hear if anyone else has already gone out and found these answers.

Ok, I’ve got the photo thing down now…

Thank you for the welcome! Recently moved to the South and just joined a range with some great training and distance opportunities. (Coleman’s Creek near Fayetteville) looking forward to sneaking away for some range therapy and gathering some data on the different 6ARC uppers with 108’s. [img]https://i.imgur.com/O8wlX36.jpg[/img]

Stumbled across a post about a shorty 6ARC and discovered the website. Started exploring AR-10’s when I had the chance to get behind an early OBR years ago. Picked up an LMT for the barrel change capabilities but just couldn’t shoot it well. Moved on to one of the first PredatOBRs and used 16 and 18” barrels. Later put together a Krieger 22” 6.5 Creedmoor barrel for it. Recently started messing with the 6ARC and love it. Built out 18” and 14” Proof barreled uppers and a 12” Monster barreled upper. Looking forward to exploring the cartridge more and learning from the experience of others here.

I’ve got a 6ARC with a 12” monster barrel. I’ve only taken it to the range once to function test with an adjustable gas block. I threw an old TA11 on it and easily hit IPSC out to 700 with 108’s. I didn’t bring the chrono but used 2400 fps as an estimate and it worked spot on for dope using the Hornady App. I’m very interested in hearing about your results and data taking it out further. I was planning on putting putting on NX8 1-8x with the new reticle once they’re released but may change my mind depending on how things go past 700 for you. Thanks for sharing your progress. https://imgur.com/eRF0NiI