VASCAR2 Wrote:Welcome to the forum Scott! There isnt a lot of velocity difference between an 18 and 20 6.5 Grendel. I think the 18 hits the sweet spot for versatility if your only going to have one 6.5 Grendel. I reload and hanging out here Ive aquired several 6.5 Grendel AR-15s plus a Cz 527 bolt action. The velocities were obtained by using a Magnettospeed chronograph a few years ago but the general velocity trends still hold true today.
123 Grain SST Hornady
12 2277
16" 2430
18" 2493
20" 2511
24" 2583
Thank you for the welcome! Those are some great numbers to know. Initially I was thinking convenience with 18" - less trouble in the brush and hauling around in the hunting vehicle, but, in all honesty, it was the only one in stock, on sale, and free shipping. It seems to be very versatile between the different lengths; there's a lot to learn here.