03-08-2014, 03:59 AM
The 90 gr 6.5 TNT has almost the same (0.183 vs 0.184) sectional density as the 123 gr 7.62x39 bullet. The case capacities are almost identical
The 170 gr 30-30 bullet has a greater (0.256 vs 0.246) sectional density than the 120 gr 6.5 mm bullet. The 30-30 has a skosh more than 44 gr H20 to the approx 35 gr for the Grendel.
In other words, while we respect caution and the suggestion to not use the powder in the Grendel may be sound advice, using faulty logic to support the blow-off tests patience.
It would be interesting to see how the fellow who made that statement responds to these comparisons. The fellow may have been clueless about the case volume of the Grendel and assumed it was .260 Rem or larger.
The 170 gr 30-30 bullet has a greater (0.256 vs 0.246) sectional density than the 120 gr 6.5 mm bullet. The 30-30 has a skosh more than 44 gr H20 to the approx 35 gr for the Grendel.
In other words, while we respect caution and the suggestion to not use the powder in the Grendel may be sound advice, using faulty logic to support the blow-off tests patience.
It would be interesting to see how the fellow who made that statement responds to these comparisons. The fellow may have been clueless about the case volume of the Grendel and assumed it was .260 Rem or larger.