Numbers are pretty similar to what I see from my 20” 7-08 Ackley. If they actually say “all day long”, I’d just assume BS from the get go. I’ve noticed that when that phrase shows up in shooting, whatever was said just before that is probably complete BS. If they are getting there, it’s a high pressure round for sure. You can only do so much with a chamber. Extend the throat, change the leade, square it up, etc. But without increasing the powder charge a bunch, all you have to work with is the pressure curve. The 7-08 Ackley adds minimal extra powder, and the 7saw even less than that. At least their numbers aren’t as crazy as the 7-08 Moses people like to spout.
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