NorthernBlue
New member
Who has this set-up on an AR? I just built one. It is a nice barrel but I am finding that it appears to over-gassed...alot? Just wondering how it worked out for others.
I first built it with the BA 14.7, DSArms NP3 Bolt Carrier Group, STD Buffer, STD Buffer Spring, PSA Nickel plated standard trigger. The recoil was immense using Hornady .223 55gr TAP URBAN rounds. Ejected them HARD to the 1 o clock and it was hard to keep the muzzle flat. My stock Colt 6920 was much easier to control. Rifle and ammunition was about 30 degrees fahrenheit.
I added an H1 buffer, and noted about no difference.
I used the H1 and added a SpringCo Blue buffer spring. Much better. TAP casings are coming out around 1:30 to 2 and not as hard. I tried some handloads. 55gn FMJ, H335, with CCI 400 primers. 20.5 gn of H335 all locked back on empty and ejected to the 4. 21.5gn all locked back and ejected to the 3. 22.5, 23.5, and 24.5 all ejected to 1:30 to 2:30. 23.5 and 24.5 gn felt about the same as TAP URBAN. Rifle and ammunition again was about 30 degrees fahrenheit.
I was surprised to see it lock back on the 20.5gn loads. Those are SOFT loadings.
Again, anyone run this barrel? What is your setup and how is it running for you? I would like to get this to shoot about the same as my stock Colt 6920.
I first built it with the BA 14.7, DSArms NP3 Bolt Carrier Group, STD Buffer, STD Buffer Spring, PSA Nickel plated standard trigger. The recoil was immense using Hornady .223 55gr TAP URBAN rounds. Ejected them HARD to the 1 o clock and it was hard to keep the muzzle flat. My stock Colt 6920 was much easier to control. Rifle and ammunition was about 30 degrees fahrenheit.
I added an H1 buffer, and noted about no difference.
I used the H1 and added a SpringCo Blue buffer spring. Much better. TAP casings are coming out around 1:30 to 2 and not as hard. I tried some handloads. 55gn FMJ, H335, with CCI 400 primers. 20.5 gn of H335 all locked back on empty and ejected to the 4. 21.5gn all locked back and ejected to the 3. 22.5, 23.5, and 24.5 all ejected to 1:30 to 2:30. 23.5 and 24.5 gn felt about the same as TAP URBAN. Rifle and ammunition again was about 30 degrees fahrenheit.
I was surprised to see it lock back on the 20.5gn loads. Those are SOFT loadings.
Again, anyone run this barrel? What is your setup and how is it running for you? I would like to get this to shoot about the same as my stock Colt 6920.
