Funny enough I have had that box of projectiles for over 10 years and hadn't been able to get them to shot in any of my 7mms. I just lucked it, it took 12 rounds to sight in a newly mounted scope and to get them to shoot into one hole. 3 more shots to chrony and that was that.
I used the marker pen method to find the start of the lands. Will measure what the jump is for you later.
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