07-13-2017, 03:45 AM
DJudge Wrote:The other day at the range I shot the 2 groups in the picture below and have never seen this much variation between 2 types of ammo especially the same brand and same weight bullets. Both are Hornady 6.5 Grendel 123gr Factory Loads AMAX and SST shot at 100 yards. Thinking that it might have been me I reshot several time with similar results. Really would like input on possible cause as this has me scratching my head...
Hornady 123gr AMAXs (<1"group) on the left and Hornady 123gr SSTs (>2 1/2"group) on the right
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Also forgot to mention that the SSTs are .010" longer than Amaxs and that the ogive on the SST appears to be about that same distance farther forward than the Amax. For that reason you could adjust seating depth 0.010" and note results. Was going to try myself once but it just wasnt high priority since my groups were still "acceptable" with the SSTs