10-07-2019, 04:38 AM
Returned to the range with lapped and rebuilt Grendel. Purpose of the test was to test as scientifically as one guy casually can; on if lapping really works. To this end, the only variable changed was the upper was lapped. Same gun, same barrel, same ammo, same distance, same targets, same optics, same shooter, and same shooting techniques (which with other guns easily beats 1 MOA results).
(pre lapping accuracy)
2.0 MOA: 129 gr SST w/ 27.8 gr Ramshot TAC: (0.8 MR)
2.2 MOA: 95 gr H Varm. w/ 27.0 gr LT-32: (0.7MR)
2.5 MOA: 90 gr TNT w/ 31.0 gr 8208: (1 MR)
2.6 MOA: Wolf Steel: (0.9 MR)
3.0 MOA: Federal 120 Gr Fusion factory: (1.2 MR)
Todays results (discussion will be in the next post):
90 TNT load: 1.3, 1.0, 1.2, 0.84 MOA (1.1 avg; 0.5 MR)
95 H Varm: 1.9, 1.7 MOA (1.8 avg; 0.7 MR)
100 gr Wolf: 2.2 MOA, 0.9 MR
120 gr Fed Fus: 2.7 MOA, 1.0 MR
123 gr Nosler: 3.1 MOA, 1 MR
129 Gr H SST: 2.3, 1.8, 2.5 (2.2 avg, 0.8 MR)
(pre lapping accuracy)
2.0 MOA: 129 gr SST w/ 27.8 gr Ramshot TAC: (0.8 MR)
2.2 MOA: 95 gr H Varm. w/ 27.0 gr LT-32: (0.7MR)
2.5 MOA: 90 gr TNT w/ 31.0 gr 8208: (1 MR)
2.6 MOA: Wolf Steel: (0.9 MR)
3.0 MOA: Federal 120 Gr Fusion factory: (1.2 MR)
Todays results (discussion will be in the next post):
90 TNT load: 1.3, 1.0, 1.2, 0.84 MOA (1.1 avg; 0.5 MR)
95 H Varm: 1.9, 1.7 MOA (1.8 avg; 0.7 MR)
100 gr Wolf: 2.2 MOA, 0.9 MR
120 gr Fed Fus: 2.7 MOA, 1.0 MR
123 gr Nosler: 3.1 MOA, 1 MR
129 Gr H SST: 2.3, 1.8, 2.5 (2.2 avg, 0.8 MR)