04-28-2020, 04:16 PM
Since conducting the previous chronograph test I assembled a second 16 6.5 Grendel using a Faxon group buy 1:8 twist mid length gas system barrel. I used a Caldwell chronograph at 10 feet from the muzzle to test the following loads.
Faxon 1:8 6.5 Grendel Chronograph 16" barrel
69* BP 29.79 02-17-17
100 grain Sierra Varmint 29.0 grains H-335 CCI 450 primer
1. 2441
2. 2438
3. 2408
4. 2442
5. 2466
Avg. 2439
STD 20.64
85 grain Sierra Varmint 31.0 grains H-335 CCI 450 primer
1. 2648
2. 2661
3. 2653
4. 2645
Avg. 2651.75
STD 6.99
123 grain Factory Hornady A-MAX
1. 2375
2. 2377
3. 2380
4. 2368
5. 2388
Avg. 2377.6
STD 7.30
Faxon 1:8 6.5 Grendel Chronograph 16" barrel
69* BP 29.79 02-17-17
100 grain Sierra Varmint 29.0 grains H-335 CCI 450 primer
1. 2441
2. 2438
3. 2408
4. 2442
5. 2466
Avg. 2439
STD 20.64
85 grain Sierra Varmint 31.0 grains H-335 CCI 450 primer
1. 2648
2. 2661
3. 2653
4. 2645
Avg. 2651.75
STD 6.99
123 grain Factory Hornady A-MAX
1. 2375
2. 2377
3. 2380
4. 2368
5. 2388
Avg. 2377.6
STD 7.30

