loaded several rounds in different weights using once fired hornady brass, used 450 primers, cases trimmed to 1.676 and OAL 2.80--test bed is a 6.8 ARP barrel, ARP superbolt, one of semi-cops bolt carriers, Mega Arms upper/handguard and lower, A2 stock, CPD magazine
first i fired a baseline using S&B green box 110 gr FMJ, factory ammo. ran flawlessly, no FTF and bolt lock back on last round
1. 2670
2. 2710
3. 2689
4, 2711
5. 2674
6. 2683
7. 2668
then tested the CFE BLK
26.0gr, hornady 110 gr BTHP
1. 2559
2. 2558
3. 2561
4. 2580
rifle would not run, lock back the bolt, extraction functioned but FTF
26.4 gr
1. 2587
2. 2603
3. 2593
4. 2567.
5. 2620
good extraction, FTF
26.8
1. 2641
2. 2665
3. 2646
4. 2627
5. 2660
results same as above, good extraction, FTF
27.1
1. 2651
2. 2685
3. 2680.
4. 2700
5. 2683
same results on extraction and FTF
27.4 gr
1.2693
2.2703
same results on extraction and FTF
27.7 gr
1. 2726
2 2734
good extraction and continued FTF
28.0 gr
1. 2767
2. 2755
extracts but FTF
28.5 gr
1. 2773
2. 2797
extraction good, FTF
all the while i had been opening up the syrac gas block from the functioning baseline, finally had it full open and still using the same magazine i ran the remainder of the S&B, gun ran flawlessly but recoil was much higher LOL
soooo, for some reason the CFE BLK will not run in this rifle. accuracy (which was not the reason i was there, was satisfactory for the conditions today, 20mph straight in the face wind, gusting to 30
2" painter's tape for aiming, one's on the low left outside the tape was getting the scope zero'd. first pic is all the S&B and the CFE BLK firing the 26 grain loads, the second pic is the 27 and 28 grain loads
first i fired a baseline using S&B green box 110 gr FMJ, factory ammo. ran flawlessly, no FTF and bolt lock back on last round
1. 2670
2. 2710
3. 2689
4, 2711
5. 2674
6. 2683
7. 2668
then tested the CFE BLK
26.0gr, hornady 110 gr BTHP
1. 2559
2. 2558
3. 2561
4. 2580
rifle would not run, lock back the bolt, extraction functioned but FTF
26.4 gr
1. 2587
2. 2603
3. 2593
4. 2567.
5. 2620
good extraction, FTF
26.8
1. 2641
2. 2665
3. 2646
4. 2627
5. 2660
results same as above, good extraction, FTF
27.1
1. 2651
2. 2685
3. 2680.
4. 2700
5. 2683
same results on extraction and FTF
27.4 gr
1.2693
2.2703
same results on extraction and FTF
27.7 gr
1. 2726
2 2734
good extraction and continued FTF
28.0 gr
1. 2767
2. 2755
extracts but FTF
28.5 gr
1. 2773
2. 2797
extraction good, FTF
all the while i had been opening up the syrac gas block from the functioning baseline, finally had it full open and still using the same magazine i ran the remainder of the S&B, gun ran flawlessly but recoil was much higher LOL
soooo, for some reason the CFE BLK will not run in this rifle. accuracy (which was not the reason i was there, was satisfactory for the conditions today, 20mph straight in the face wind, gusting to 30
2" painter's tape for aiming, one's on the low left outside the tape was getting the scope zero'd. first pic is all the S&B and the CFE BLK firing the 26 grain loads, the second pic is the 27 and 28 grain loads

