Ok I have 55 shots down my newly built 7 saum.
Bullet: 168 VLDh
Powder: 56.5gn H1000 (someone posted showing this as Gunwerks recipe; I did shoot 52gn and 54gn first to check for pressure)
Barrel: 18” Benchmark
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Result: This was my 3rd group at 100, and my best. First 2 groups I was getttinf used to the TT Special at its lightest pull weight. But I’ll post those groups too.
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L square is 4 shots. R square is 5.
I took it out to 500 and shot steel and cardboard. Not as stoked about the results, but I think I just suck at 500.
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So I’m happy with the 100yd results. Still more shooting to be done. Will do a 10 shot group next range trip.
But I’m wondering whether or not my scope is level. 100 yd shots are little left (not much). 500 yd shots are right. There was no wind. Am I right in thinking this is either an out of level scope or I was holding the rifle canted? Not sure if I was checking the level on my scope for each shot..
And next question is to “true” the velocity. I played with a free ballistic app and basically adjusted velocity until the bullet drop at 500 matched what I observed in my rifle.
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So I’m zeroed at 100, I was dialed to 2.5 at 500. Adjusted V until the app showed 2.5 at 500. Used G7 0.316. Scope height 1.73”.
I know Form has his instructions w a different app and I’ll try that eventually, but is the process correct?
I ask bc I don’t think I’m doing 2900fps. I used a magnetospeed for 5 shots and got avg 2676. Pretty slow

I think I’ll try H4350 and see what happens.