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Rifles, Reloading, Optics, Equipment
Reloading
What does "safe" mean?
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<blockquote data-quote="cajun" data-source="post: 1390416" data-attributes="member: 9772"><p>So I always load with a chronograph and use it as part of the equation. I study load data from several manuals for like weight bullets. Vel is a very good indicator of pressure. If the vel is way high you know you are over pressure even if other signs are not showing. Full custom rifles are guilty of this because they are very well put together and do not show the classic bolt lift and flat primer etc signs.</p><p></p><p>Some rifles will pressure out before max vel is achieved. Big chamber or tight bore, is what it is. Some rifles are fast and some are slow. The chrono is a major tool in my load development, but not the only tool.</p><p></p><p>Steve</p><p></p><p>This. If you use a chrono and stay within published velocities you will be safe, your barrel and brass will last longer and you won't be out there on a really hot day and have to hammer your bolt open.</p><p></p><p>When I first got into reloading in the 80's a friend of mines dad was a big time reloader and shooter. This was back when the loading manuals were not quite as lawyered up as they are today. He routinely pushed the envelope and hot rodded his guns. I can't tell you how many times he had a load that was just fine one day and the next time you couldn't open the bolt.</p><p></p><p>I see a lot of guys running 6.5 creedmor 140's 2800ish up to 2900 with h4350 even though the highest listed velocity in any manual is in the 2700's. They are for sure running above 62k which is saami but probably less than the 70K range where you start seeing issues with primers. Lapua brass and small rifle primers can take a good beating. As for me if I want 6.5 284 velocities I will build one. The extra few fps is just not worth it.</p></blockquote><p></p>
[QUOTE="cajun, post: 1390416, member: 9772"] So I always load with a chronograph and use it as part of the equation. I study load data from several manuals for like weight bullets. Vel is a very good indicator of pressure. If the vel is way high you know you are over pressure even if other signs are not showing. Full custom rifles are guilty of this because they are very well put together and do not show the classic bolt lift and flat primer etc signs. Some rifles will pressure out before max vel is achieved. Big chamber or tight bore, is what it is. Some rifles are fast and some are slow. The chrono is a major tool in my load development, but not the only tool. Steve This. If you use a chrono and stay within published velocities you will be safe, your barrel and brass will last longer and you won't be out there on a really hot day and have to hammer your bolt open. When I first got into reloading in the 80's a friend of mines dad was a big time reloader and shooter. This was back when the loading manuals were not quite as lawyered up as they are today. He routinely pushed the envelope and hot rodded his guns. I can't tell you how many times he had a load that was just fine one day and the next time you couldn't open the bolt. I see a lot of guys running 6.5 creedmor 140's 2800ish up to 2900 with h4350 even though the highest listed velocity in any manual is in the 2700's. They are for sure running above 62k which is saami but probably less than the 70K range where you start seeing issues with primers. Lapua brass and small rifle primers can take a good beating. As for me if I want 6.5 284 velocities I will build one. The extra few fps is just not worth it. [/QUOTE]
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Reloading
What does "safe" mean?
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