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Hunting
Long Range Hunting & Shooting
.338 Lupua
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<blockquote data-quote="emp1953" data-source="post: 2632404" data-attributes="member: 71817"><p>Your brake adds anothe 2+ inches to the barrel length. Perhaps the harmonics are off. Can you easily remove the break then shoot a couple of groups. Are you shooting off a sandbagged bench? Does the rifle have a bipod attached? If you are shooting reloads, buy a box of factory ammo and try that just for a sanity check. Then shoot a session where you single hand feed each round, don't cycle it out of the magazine. Whomever put the rifle together for you, I'm sure they proof fired it, contact them and see what ammo they used and hopefully you can get the same ammo and give that a session. What is the twist rate on your barrel? for both that Berger and Nosler bullet the recommended optimal twist is 1:10. It would be interesting to see a group at distance (say 300yds or so) to see if the bullets stay stabilized.</p></blockquote><p></p>
[QUOTE="emp1953, post: 2632404, member: 71817"] Your brake adds anothe 2+ inches to the barrel length. Perhaps the harmonics are off. Can you easily remove the break then shoot a couple of groups. Are you shooting off a sandbagged bench? Does the rifle have a bipod attached? If you are shooting reloads, buy a box of factory ammo and try that just for a sanity check. Then shoot a session where you single hand feed each round, don't cycle it out of the magazine. Whomever put the rifle together for you, I'm sure they proof fired it, contact them and see what ammo they used and hopefully you can get the same ammo and give that a session. What is the twist rate on your barrel? for both that Berger and Nosler bullet the recommended optimal twist is 1:10. It would be interesting to see a group at distance (say 300yds or so) to see if the bullets stay stabilized. [/QUOTE]
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.338 Lupua
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