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Long Range Hunting & Shooting
131 Blackjack vs 135 Berger
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<blockquote data-quote="willfrye027" data-source="post: 2247138" data-attributes="member: 114992"><p>26in 7twist preferred barrel prefit 25creed BJ reamer </p><p>Tikka action </p><p></p><p>with Peterson LRP brass the necks were way too tight in the chamber; measured and fired were .288". I called and asked preferred about this and apparently their reamer is a .288" neck. Which is odd to me considering the ones BJ sells were .290". </p><p></p><p>neck turned that brass for .004" total clearance and still getting only 2730fps before hitting sizable pressure (38.4gr H4350, CCI 200s). 38.3gr at 2730fps with occasional light ejector mark, 38.4gr at 2760fps with heavier mark and starting to get heavy bolt lift. ES is not good at 38.3 gr but groups are decent .5 MOA. tried some loads resized of the same brass with same result.</p><p></p><p>Redding type S with .282 bushing. Seating with Forster ultra micrometer. Also had some hornady 6.5 creedmoor brass laying around and that is getting me about 2800 before hitting pressure. I've got about 30-40 rounds down the tube now. Maybe I am asking too much? I do have some lapua brass with SRP just waiting on some primers in the Mail to try that route. Maybe should try RL26 since the h4350 seems to be pressuring up early? Thanks in advance</p></blockquote><p></p>
[QUOTE="willfrye027, post: 2247138, member: 114992"] 26in 7twist preferred barrel prefit 25creed BJ reamer Tikka action with Peterson LRP brass the necks were way too tight in the chamber; measured and fired were .288”. I called and asked preferred about this and apparently their reamer is a .288” neck. Which is odd to me considering the ones BJ sells were .290”. neck turned that brass for .004” total clearance and still getting only 2730fps before hitting sizable pressure (38.4gr H4350, CCI 200s). 38.3gr at 2730fps with occasional light ejector mark, 38.4gr at 2760fps with heavier mark and starting to get heavy bolt lift. ES is not good at 38.3 gr but groups are decent .5 MOA. tried some loads resized of the same brass with same result. Redding type S with .282 bushing. Seating with Forster ultra micrometer. Also had some hornady 6.5 creedmoor brass laying around and that is getting me about 2800 before hitting pressure. I’ve got about 30-40 rounds down the tube now. Maybe I am asking too much? I do have some lapua brass with SRP just waiting on some primers in the Mail to try that route. Maybe should try RL26 since the h4350 seems to be pressuring up early? Thanks in advance [/QUOTE]
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131 Blackjack vs 135 Berger
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