So are there any 6.8 SPC ii fans here?
- Thread starter 450AK
- Start date
Amazed that this cartridge doesn't have a larger following, especially with folks that hunt the woods for whitetail. Now, I have hunted some really mature hardwoods, overlooking the area from the side of a ridge and a 200yd shot is really, really iffy. You have to pick your shots carefully to remotely reach that distance. A perfect scenario for a lightweight 6.8 build.
If you look over the factory ammo data from Hornady with the SST bullet, the 6.8 still delivers over 1100 ft/lbs at 200yds and that is from a 16" barrel. Yes, their 6.5 Grendel ammo delivers more HP at the longer distances...BUT, they get that data from a 24" test barrel. Dragging a 24" barreled AR into the woods just didn't float my boat. So, the 6.8 was my choice for a very lightweight AR-based rifle.
The trajectory of that factory 120gr SST when using a scope mount that places the scope centerline at the same height above bore as battle sights yields the following numbers: 2" high at 100yds and 2" low at 200yds. This is not calculated, it was fired with multiple groups. The ones that I have assembled with a 16" Stag barrel will group between 1 and 2 MOA @ 100 yds, some on the low end and others on the high end. Makes things pretty simple for deer hunting in the woods: From the muzzle to as far as you can pick a clean shot, you aim dead center of the kill zone. Easy peasy for old duffs like me. Though I have handloaded a bit for it, I pretty much stuck with the Hornady factory fodder because 2MOA at 200yds (my AR) is all the accuracy that I will ever need for hunting.
Am about to assemble another pair of rifles in this caliber. One is based on an Aero upper/lower for a friend, a Black Rain Skullz barrel (which I believe to be junk) and a RRA 2-stage NM trigger. The other is based on a Cav-15 lower that was given to me. That will have an Anderson upper, a Stag barrel and a JMT trigger. It will be my ultralight woods and stalking rifle.
If you look over the factory ammo data from Hornady with the SST bullet, the 6.8 still delivers over 1100 ft/lbs at 200yds and that is from a 16" barrel. Yes, their 6.5 Grendel ammo delivers more HP at the longer distances...BUT, they get that data from a 24" test barrel. Dragging a 24" barreled AR into the woods just didn't float my boat. So, the 6.8 was my choice for a very lightweight AR-based rifle.
The trajectory of that factory 120gr SST when using a scope mount that places the scope centerline at the same height above bore as battle sights yields the following numbers: 2" high at 100yds and 2" low at 200yds. This is not calculated, it was fired with multiple groups. The ones that I have assembled with a 16" Stag barrel will group between 1 and 2 MOA @ 100 yds, some on the low end and others on the high end. Makes things pretty simple for deer hunting in the woods: From the muzzle to as far as you can pick a clean shot, you aim dead center of the kill zone. Easy peasy for old duffs like me. Though I have handloaded a bit for it, I pretty much stuck with the Hornady factory fodder because 2MOA at 200yds (my AR) is all the accuracy that I will ever need for hunting.
Am about to assemble another pair of rifles in this caliber. One is based on an Aero upper/lower for a friend, a Black Rain Skullz barrel (which I believe to be junk) and a RRA 2-stage NM trigger. The other is based on a Cav-15 lower that was given to me. That will have an Anderson upper, a Stag barrel and a JMT trigger. It will be my ultralight woods and stalking rifle.
Kevin Taylor
Gold $$ Contributor
Looks like I need to find my extra left hand Rem 700 0.425” bolt face bolt. I think it even has a Sako extractor.
Fast14riot
Gold $$ Contributor
What barrel length and gas system?
<20" barrels do well with AA2200, 322, and similar. >20" I use 335, CFE223, AA2520, W748, BLC2
bluealtered
Silver $$ Contributor
I have used both 16" and 18" barrels on my 6.8's and got the best results with H322. The photo i posted had a 16" barrel and i used H322.
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