civilian75
Member
Guys, need help/advise. I made three mistakes when I purchased my first rifle based on the AR-15 platform. I grew kind of tired of the "pray-n-spray" accuracy of my AK-47/74s and decided to shell out on a good AR that would also make good gun porno.
My first mistake was, perhaps, picking the CDD M4LED. It has a 16" bbl and a 1/7 twist rate. My biggest and only complain is accuracy. This is what I have observed:
Distance: 50yd
optics: Millet 1-4x32, set at x4
All groups in MOA, 1" at 50yd = 2 MOA.
62gr Silver Bear, 10 shots, 5 MOA
55gr American Eagle XM193, 10 shots, 5 MOA
62gr BVAC, 10 shots, 5 MOA
68gr Black Hills Blue Box, 10 shots, 2.25 MOA
75gr Hornady (handloads), 4 shots, 1 flyer, 1 MOA
77gr SMK, handloads, 4 shots + 1 flyer = .75 MOA, or 5 shot + 0 flyer = 1.25 MOA.
75gr Hornadys on top of 23.5gr of Varget, LC brass, CCI primer, clocked 2500fps
77gr SMKs on top of 23.5gr of Varget, LC brass, CCI primer, clocked 2560fps
trigger pull: gritty 6.5lb
Is this normal and am I expecting too much, or, was it my luck I ended up with a picky rifle, or there is indeed something wrong with it?
Is 1/7 too fast for the lighter/faster bullets? Should I have the bbl replaced with a 1/9 twist rate heavy barrel?
My first mistake was, perhaps, picking the CDD M4LED. It has a 16" bbl and a 1/7 twist rate. My biggest and only complain is accuracy. This is what I have observed:
Distance: 50yd
optics: Millet 1-4x32, set at x4
All groups in MOA, 1" at 50yd = 2 MOA.
62gr Silver Bear, 10 shots, 5 MOA
55gr American Eagle XM193, 10 shots, 5 MOA
62gr BVAC, 10 shots, 5 MOA
68gr Black Hills Blue Box, 10 shots, 2.25 MOA
75gr Hornady (handloads), 4 shots, 1 flyer, 1 MOA
77gr SMK, handloads, 4 shots + 1 flyer = .75 MOA, or 5 shot + 0 flyer = 1.25 MOA.
75gr Hornadys on top of 23.5gr of Varget, LC brass, CCI primer, clocked 2500fps
77gr SMKs on top of 23.5gr of Varget, LC brass, CCI primer, clocked 2560fps
trigger pull: gritty 6.5lb
Is this normal and am I expecting too much, or, was it my luck I ended up with a picky rifle, or there is indeed something wrong with it?
Is 1/7 too fast for the lighter/faster bullets? Should I have the bbl replaced with a 1/9 twist rate heavy barrel?
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