09-10-2013, 07:00 PM
The best comparison is if you can find a factory load from one company, that uses the same bullet construction/type, and same bullet weight. The 6.5 Grendel 123gr SST and 6.8 SPC 120gr SST factory loads are a great comparison from 16" barrels.
Hornady lists 16" 6.5 Grendel velocity from their 14.5" barrel with permanently attached muzzle device, which they used for the 8th Edition Grendel loads. They list 16" MV at 2350fps on their site.
My 16" AA Grendel gets 2460fps with the 123gr factory load. That is the exact same velocity posted for the 120gr SST 6.8 from a 16" barrel.
At the end of the day, you're looking at a .510 BC vs. a .400 BC. Even the 14.5" Grendel fares well against the 18" 6.8 with those BC's.
Hornady lists 16" 6.5 Grendel velocity from their 14.5" barrel with permanently attached muzzle device, which they used for the 8th Edition Grendel loads. They list 16" MV at 2350fps on their site.
My 16" AA Grendel gets 2460fps with the 123gr factory load. That is the exact same velocity posted for the 120gr SST 6.8 from a 16" barrel.
At the end of the day, you're looking at a .510 BC vs. a .400 BC. Even the 14.5" Grendel fares well against the 18" 6.8 with those BC's.