Ok so I have 6.5 Creedmoor built on Aero M5 receiver set. It has a Faxon 18in Big Gunner barrel, Aero Atlas 15in rail, and MBA-1 stock. It comes in at 14lbs with Specwar 7.62 and Hogster, 12lbs with thermal but w/o can. The lighter profile barrel saves quite a bit of weight, but I had to add tungsten weights into the buffer to tame the 6.5 Creedmoor suppressed. 140 Honday ELDs come out of the 18in barrel at 2580fps without the can.
When I started looking at the 6mm ARC and plugging some numbers, it looks like out to about 500 I could get a similar trajectory and wind deflection to my 18in 6.5CM shooting 140 ELDs with a 20/18 in 6mm ARC shooting 108 ELDs . The only difference is my 6.5 CM would hit with around 300ft/lbs more energy than the 6mm ARC. Also the 6mm ARC would weigh a fair amount less than the AR10. From my estimates and depending on components, I would be looking at saving 1.5-2 lbs on the rifle. This would likely be more since I would not need the heavier tungsten weights. With the ARC too I could use a different can I have that comes in about a pound under my Specwar. All in all building a 6mm ARC would save me around 3 pounds (1 pound being on the very front end).
My first concern about possibly switching is the 300ft/lbs lower energy of the 6mm ARC. Second, I am fully set up with all components to shoot the 6.5 CM. I would have to get dies, brass, and bullets to reload for the 6mm ARC. Lastly, I am concerned the 6mm ARC won't put down hogs with the same authority as my 6.5CM. However, I have not seen a whole lot of massive hogs around here....
When I started looking at the 6mm ARC and plugging some numbers, it looks like out to about 500 I could get a similar trajectory and wind deflection to my 18in 6.5CM shooting 140 ELDs with a 20/18 in 6mm ARC shooting 108 ELDs . The only difference is my 6.5 CM would hit with around 300ft/lbs more energy than the 6mm ARC. Also the 6mm ARC would weigh a fair amount less than the AR10. From my estimates and depending on components, I would be looking at saving 1.5-2 lbs on the rifle. This would likely be more since I would not need the heavier tungsten weights. With the ARC too I could use a different can I have that comes in about a pound under my Specwar. All in all building a 6mm ARC would save me around 3 pounds (1 pound being on the very front end).
My first concern about possibly switching is the 300ft/lbs lower energy of the 6mm ARC. Second, I am fully set up with all components to shoot the 6.5 CM. I would have to get dies, brass, and bullets to reload for the 6mm ARC. Lastly, I am concerned the 6mm ARC won't put down hogs with the same authority as my 6.5CM. However, I have not seen a whole lot of massive hogs around here....