I have had a half dozen ARs over the years. I just never really got into them. I am a bolt action hunting rifle and LR Benchrest kind of shooter. All but one of my ARs were A2s and a couple were setup for Highpower. Well, with all the unrest going on I decided I should get an AR again.
I got it Saturday, by luck. I happened to be the first guy by in my local Cabela's when they put out a Black Rain Ordnance Spec15 16" carbine. It had a mounted Burris Tac 30 1-4x scope and a blue "battle worn" finish (whatever).
I got it home and torqued the ring screws and base nuts. I liked the weight, balance, and trigger pull. It seemed like a quality firearm. I took it to the range today (Sunday). It functioned perfectly. The scope was initially 20" low at 100 yds. (I was lazy and didn't boresight it because I had a huge boresight target.)
My issue was the target dots I picked for ammo testing were covered by the dot in the scope. While it is very possible to shoot inside your sights when the aiming area is larger than the sight dot, it's much harder when the aiming dot is larger than the aiming area. The other issue was the butt stock was in no way setup to shoot from a rear bag. I bought bigger targets and have ordered a Magpul butt stock that will work a little better off a rear bag.
Groups were not great. Now I have discussed with @Jet and @Dusty Stevens and some others how when we are stable in a rest that an experienced shooter doesn't usually make big 1 MOA errors. They might make .1 or even .2 MOA errors, but a 1 MOA error from an experienced shooter from a stable rest is a LOT of dispersion. I think I made some 1 MOA errors because I couldn't see and I could not hold the rifle consistently on the rest. Most of the time the butt stock wasn't even close to my shoulder.
Five shot groups at 100 yds were:
Remington 55 grain FMJ: 3" group, 2976 FPS, 58 ES
Black Hills 77 Tipped MK: 2.625", 2671 (50)
Hornady 75 BTHP: 1.75", 2479 (54)
Hornady 55 VMax: 1.625", 2893 (55)
That was the order of the groups fired and noticed how they got better. I did start to figure out how to more precisely aim on the too-small target. I think the rifle is a little better than those groups, especially the first two, but I will need to be more stable and have the bigger targets to see that. I shouldn't have to put on a higher power scope if I have a proper size target. All my other ARs were sub MOA, but I don't remember having the issues shooting them that I did this one. The Ruger SR 762 I had was in a carbine configuration, but I used a 9x scope and it was stable on the bags.
Questions:
1. Thought on any of the above?
2. Black Rain says the Spec 15 has a carbine length gas system but the gas tube measures 9". Doesn't that make it a mid length? Yes, the recoil was extremely mild but three days earlier I was shooting a 33-28 Nosler with 48 ft lbs of recoil.
3. What is the best shooting rest for an AR carbine? After I pick an ammo I won't be shooting it off sandbags anymore, but the first step is to find the best ammo. I am not going to hand load for this gun.
4. Why type of defensive AR type shooting course should I look for? I have zero interest in any tactical type competition (LR BR takes most of my time), but I do want to gain proficiency in a self defense type scenario.

I got it Saturday, by luck. I happened to be the first guy by in my local Cabela's when they put out a Black Rain Ordnance Spec15 16" carbine. It had a mounted Burris Tac 30 1-4x scope and a blue "battle worn" finish (whatever).
I got it home and torqued the ring screws and base nuts. I liked the weight, balance, and trigger pull. It seemed like a quality firearm. I took it to the range today (Sunday). It functioned perfectly. The scope was initially 20" low at 100 yds. (I was lazy and didn't boresight it because I had a huge boresight target.)
My issue was the target dots I picked for ammo testing were covered by the dot in the scope. While it is very possible to shoot inside your sights when the aiming area is larger than the sight dot, it's much harder when the aiming dot is larger than the aiming area. The other issue was the butt stock was in no way setup to shoot from a rear bag. I bought bigger targets and have ordered a Magpul butt stock that will work a little better off a rear bag.
Groups were not great. Now I have discussed with @Jet and @Dusty Stevens and some others how when we are stable in a rest that an experienced shooter doesn't usually make big 1 MOA errors. They might make .1 or even .2 MOA errors, but a 1 MOA error from an experienced shooter from a stable rest is a LOT of dispersion. I think I made some 1 MOA errors because I couldn't see and I could not hold the rifle consistently on the rest. Most of the time the butt stock wasn't even close to my shoulder.
Five shot groups at 100 yds were:
Remington 55 grain FMJ: 3" group, 2976 FPS, 58 ES
Black Hills 77 Tipped MK: 2.625", 2671 (50)
Hornady 75 BTHP: 1.75", 2479 (54)
Hornady 55 VMax: 1.625", 2893 (55)
That was the order of the groups fired and noticed how they got better. I did start to figure out how to more precisely aim on the too-small target. I think the rifle is a little better than those groups, especially the first two, but I will need to be more stable and have the bigger targets to see that. I shouldn't have to put on a higher power scope if I have a proper size target. All my other ARs were sub MOA, but I don't remember having the issues shooting them that I did this one. The Ruger SR 762 I had was in a carbine configuration, but I used a 9x scope and it was stable on the bags.
Questions:
1. Thought on any of the above?
2. Black Rain says the Spec 15 has a carbine length gas system but the gas tube measures 9". Doesn't that make it a mid length? Yes, the recoil was extremely mild but three days earlier I was shooting a 33-28 Nosler with 48 ft lbs of recoil.
3. What is the best shooting rest for an AR carbine? After I pick an ammo I won't be shooting it off sandbags anymore, but the first step is to find the best ammo. I am not going to hand load for this gun.
4. Why type of defensive AR type shooting course should I look for? I have zero interest in any tactical type competition (LR BR takes most of my time), but I do want to gain proficiency in a self defense type scenario.

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