Headed out to Atturbury today to test different seating depths...After some number crunching I think it is clear what seating depth my rifle likes.
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Shooting this out of my Tikka t3x CTR (20" barrel).
Bullet: 140gr ELD-M
Powder: H4350
Brass: Lapua
Primers: CCI #450
I plan on loading up some more at 0.02" OTL everything the same just to confirm. I feel like a single 5 shot group is not enough to go off of with those results but still made me happy to see.
Did the lowest SD's correspond with the best groups on the target?
I’ll bite...why use a magnum primer for a bolt action (6.5cm I think from your speadsheet?)
...better ignition?
...just compensating? I used to know a guy that would over-pay and buy magnum condoms because he actually thought they were bigger (they’re not).
i’m envious of your spread sheet and really need to start getting serious about organizing my data. I’be got all my pet loads memorized, but just branched out into a couple different calibers and need to start getting this stuff down digitally (or at least on paper) before it’s pushed out of my head and replaced with coronavirus propaganda.