A tale of two RECCEs: Part 2.
http://home.comcast.net/~gocartmozart/recce_a6.jpgWhile I am extremely pleased with the above RECCE, I can envision circumstances were something a little more rugged, a little more tolerant of neglect (think chrome lined barrel), and still a little lighter would be useful. Obviously with these requirements I would have to compromise slightly on accuracy, but I was still hoping to put together something that approached minute of angle accuracy.
I have had excellent results in the past with Colt 16.1" HBAR chrome lined barrels, so I decided to build this RECCE around one such barrel. I couldn't decide between a fixed stock or collapsible stock, so in true ar15.com fashion I used
both.http://home.comcast.net/~gocartmozart/recce_b3.jpghttp://home.comcast.net/~gocartmozart/recceb4.jpgThis RECCE uses Colt upper and lower receivers, a KAC mid-length free float tube, Troy back-up sights and a JP Enterprises single stage trigger. This RECCE weighs in at 8.75 lbs compared to 10.25 lbs for the previous RECCE.
http://home.comcast.net/~gocartmozart/recceb6.jpgIn keeping with the more rugged theme, I decided to use a Trijicon ACOG TA-11 scope. It works very well with this set-up.
http://home.comcast.net/~gocartmozart/acog3.jpgThe house in this picture is 85 yards away and the sky was completely overcast when I took the picture.
http://home.comcast.net/~gocartmozart/acog4.jpgThe manual for the TA-11 suggests zeroing the tip of the reticle at 100 meters, but I decided to use a sighting scheme along the lines of the IBZ concept. I zeroed the center of the donut at 50 yards and this gives me a nice flat trajectory out to 200 yards. The highest point of the trajectory is only 1.6" above the line of sight at approximately 125 yards.
http://home.comcast.net/~gocartmozart/trajectory.jpgAccuracy testing with this RECCE was done done at 50 yards off a bipod with a rear bag rest using the TA-11. My best
10-shot group meaured .53".
http://home.comcast.net/~gocartmozart/recce_10_shot_group.jpg