Here's a basic accuracy test using factory and reloaded ammo at 100 yards, with a SS 10x
mildot scope in an ADM mount. Weather was 85 degrees, threatening rain,
and breezy/gusty wind. Shooting bench was arranged as shown
here in a previous test with a different rifle.
This is a
BCM 16" 556
chambered, midlength, lightweight, chrome lined and hammer forged
barrel, 1/7 twist, factory assembled upper. This was purchased a few
months ago and other than a rough sight-in at an indoor range is has not
been shot. It can be seen on BCM's website
here. The lower is a Stag with a DPMS LPK, nothing fancy.
Here's the test bed:
The groups were all 10-shot save for the one noted, and measured with a
dial caliper using the extreme spread technique. I waited about 15
seconds between shots, which is probably too fast.
1.305 -handloaded Sierra 52 gr HPBT (1 called flyer - wind blew a box off the bench and I flinched)
1.630 -handloaded Hornady 55 gr FMJBT
2.128 -Federal 55 gr FMJ "Wal-Mart black box"
2.137 -Hornady 55 gr Steel Match
2.430 -Federal 62 gr Fusion MSR bonded soft point
2.630 -Hornady 75 gr Steel Match (5-shot only, all I had left)
4.066 -Winchester 64 gr Power Point Jacketed Soft Point
Here's a shot of the Sierra handload and the Federal FMJ
It's by no means a precision rig, but I wanted to see how it would do. I'm very happy.
The barrel got hot by the time I fired the heavier loads. I'm going to go back and re-shoot those loads at a later date with a cold barrel.
Thanks BCM