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As far a shorter barrels go, when the Duleys did all of those bush pigs it was the .270 that come out on top wasn't it?
Something like a 145gr eldx getting over 2900 out of a shorter barrel with superformance powder. The general consensus was a magnum suppressor with 18" and no shorter than that.
I have a .308 and if I punch those numbers into the ballistics app makes the short barrel .308 looks like it has the trajectory of a brick.
The recoil will still be a lot less than any magnum and very manageable.
Put it this way, if guys off this forum can shoot deer with a .270 and lrab out to 800 odd yards going 2800ish with adi powder in a longer barrel. Then out of an 18" or 19" barrel with more modern powder going the same velocity you have a pretty versatile setup.
Worried about recoil, just download some 120gr or 130gr ssts or nosler ballistic tips for closer stuff.
Yea they found the 270 performed the best when they could only use factory ammunition in that configuration for sponsorship reasons. When reloading was an option so they could influence the performance then they would use something else.
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