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The Basics, Starting Out
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<blockquote data-quote="bblaine2k" data-source="post: 53834" data-attributes="member: 1440"><p>Remingtonman_25_06</p><p></p><p>Glad you're still chugging away at your .243 rig. </p><p></p><p>Just a few thoughts as to what's causing flyers - mostly reloading. </p><p></p><p>1. De-burring the flash hole. Of all the brass I've loaded, only A-Square and Norma haven't had a burr on the inside of the flash hole - rumor has it they drill their brass. Remington and Winchester punch the holes in their brass sometimes leaving a bad burr affecting primer flame column. Of course if you're already de-burring the holes then that's probably not the cause.</p><p></p><p>2. Differences in bullet seating depth/C.O.A.L may start the bullet down the barrel differently from one shot to the next.</p><p></p><p>3. Powder burn variations. I didn't believe this until a buddy of mine showed me. If there's 100 or more FPS variance with the same weight load, impacts can vary. He even predicted where the bullet would be after watching the chrono velocities. If one shot was 150 fps, it may strike high and right. </p><p></p><p>4. Not squaring your dies. If you simply lock your reloading die by screwing down the locking ring, the die may not be square to the shell-holder. To fix this, simply lower the ram, place a perfectly flat washer on top the shell holder and flush it against the bottom of the sizing die. Holding pressure against the die, screw down the lock ring. This allows the slack and slop in the threads to be taken up before you lock the ring and size your brass. If the die and shellholder aren't square, then it may bend the brass ever-so slightly to the point where the cartridge doesn't lay perfectly centered in the chamber. </p><p></p><p>5. Other causes - primers, bullet weight differences and any number of other factors including those with the firearm itself.</p><p></p><p>I'd try de-burring your brass. That is usually one of the most common causes of flyers. The fact that it is only happening 1 out of 3, leads me to believe that it's something to do with the brass. Usually there are 4 machines making the brass we reloaders get. You never get brass made from just one machine so chances are it's a variance in the machines at the brass plant.</p><p></p><p>Just my thoughts. Hope this helps.</p><p></p><p>Good luck and keep us posted. </p><p>By the way, I haven't been able to get onto shooters.com, have you?</p></blockquote><p></p>
[QUOTE="bblaine2k, post: 53834, member: 1440"] Remingtonman_25_06 Glad you're still chugging away at your .243 rig. Just a few thoughts as to what's causing flyers - mostly reloading. 1. De-burring the flash hole. Of all the brass I've loaded, only A-Square and Norma haven't had a burr on the inside of the flash hole - rumor has it they drill their brass. Remington and Winchester punch the holes in their brass sometimes leaving a bad burr affecting primer flame column. Of course if you're already de-burring the holes then that's probably not the cause. 2. Differences in bullet seating depth/C.O.A.L may start the bullet down the barrel differently from one shot to the next. 3. Powder burn variations. I didn't believe this until a buddy of mine showed me. If there's 100 or more FPS variance with the same weight load, impacts can vary. He even predicted where the bullet would be after watching the chrono velocities. If one shot was 150 fps, it may strike high and right. 4. Not squaring your dies. If you simply lock your reloading die by screwing down the locking ring, the die may not be square to the shell-holder. To fix this, simply lower the ram, place a perfectly flat washer on top the shell holder and flush it against the bottom of the sizing die. Holding pressure against the die, screw down the lock ring. This allows the slack and slop in the threads to be taken up before you lock the ring and size your brass. If the die and shellholder aren't square, then it may bend the brass ever-so slightly to the point where the cartridge doesn't lay perfectly centered in the chamber. 5. Other causes - primers, bullet weight differences and any number of other factors including those with the firearm itself. I'd try de-burring your brass. That is usually one of the most common causes of flyers. The fact that it is only happening 1 out of 3, leads me to believe that it's something to do with the brass. Usually there are 4 machines making the brass we reloaders get. You never get brass made from just one machine so chances are it's a variance in the machines at the brass plant. Just my thoughts. Hope this helps. Good luck and keep us posted. By the way, I haven't been able to get onto shooters.com, have you? [/QUOTE]
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