01-08-2022, 06:16 AM
You have a couple things working against you in this.
Grendel hunter is what is called a "rack grade" barrel, so it can be luck of the draw as to getting an accurate load. That, plus the SST is a fairly "finicky" bullet that can be tough to find accurate loads for (some folks have found such, others can't make it shoot worth a darn). I had a GH bbl once and could get it to shoot the sst but only with one load of AR comp powder...
It's pretty hard to work up accurate loads without a chrono, do you have one and have you shot any ladders to see what the powder/MV performance for your barrel, powder and load combo is?
My last suggestion is what is the round count for this rig, you might need 50-100 shots before the barrel starts to settle itself in.
PS, Hornady has load data for their 123-class bullets, have you looked at that data?
Grendel hunter is what is called a "rack grade" barrel, so it can be luck of the draw as to getting an accurate load. That, plus the SST is a fairly "finicky" bullet that can be tough to find accurate loads for (some folks have found such, others can't make it shoot worth a darn). I had a GH bbl once and could get it to shoot the sst but only with one load of AR comp powder...
It's pretty hard to work up accurate loads without a chrono, do you have one and have you shot any ladders to see what the powder/MV performance for your barrel, powder and load combo is?
My last suggestion is what is the round count for this rig, you might need 50-100 shots before the barrel starts to settle itself in.
PS, Hornady has load data for their 123-class bullets, have you looked at that data?
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