05-18-2024, 02:40 AM
I don't recommend loading to touch or jam the lands in an AR, let alone the 6Arc.
When it first came out, some of Hornady's 105 factory loads were loaded too long, and jammed the lands especially when combined with some short throats. Result was way over pressure.
Add in that the AR is not a precision chamber, and that some bullets could slip forward during the slam-feeding of the bcg, all together just doesn't seem like the path to choose.
If we were talking about a bolt action precision rifle and chamber, maybe things would be different. Maybe OP and Kmw's pipes are bolt action, It's close to midnite and I don't remember (this John Wayne movie is about over too, lol), but anyway... in my book 20 off is about as close as I want it to go. Remember these are mid-pressure cartridges, not 58-60 etc etc ksi. I even have to keep reminding myself of this, anyway.
Anyway, I want my Arc loads to have some jump.
When it first came out, some of Hornady's 105 factory loads were loaded too long, and jammed the lands especially when combined with some short throats. Result was way over pressure.
Add in that the AR is not a precision chamber, and that some bullets could slip forward during the slam-feeding of the bcg, all together just doesn't seem like the path to choose.
If we were talking about a bolt action precision rifle and chamber, maybe things would be different. Maybe OP and Kmw's pipes are bolt action, It's close to midnite and I don't remember (this John Wayne movie is about over too, lol), but anyway... in my book 20 off is about as close as I want it to go. Remember these are mid-pressure cartridges, not 58-60 etc etc ksi. I even have to keep reminding myself of this, anyway.
Anyway, I want my Arc loads to have some jump.