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Rifles, Reloading, Optics, Equipment
Reloading
Load development what do I do next?
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<blockquote data-quote="codyadams" data-source="post: 1341551" data-attributes="member: 87243"><p>I would continue what you were doing, and work up until you find pressure. As stated, you will probably find a higher node. So say your loads came out like this....</p><p></p><p>1. 70</p><p>2. 70.5</p><p>3. 71</p><p>4. 71.5</p><p>5. 72</p><p>6. 72.5</p><p>7. 73</p><p>8. 73.5</p><p>9. 74</p><p>10. 74.5</p><p></p><p>And 8 and 9 had the best chrono readings, but were spread out on the paper. Was your shooting the same? Was your barrel getting warm, causing some mirage to distort the target? Or some other issue? That could cause the higher impacts. If your shooting form was solid, trust the target. What I would do is load this....</p><p></p><p>11. 75</p><p>12. 75.5</p><p>13. 76</p><p>14. 76.5</p><p>15. 77</p><p></p><p>And do the same method as you did. You will either find pressure, another node, or find that you still haven't found pressure. Either way, it is always good to KNOW where your max pressure is, that way you know how much wiggle room you have. </p><p></p><p>But say you find another flat spot in velocity at loads 11, 12, and 13, 14 has a rise in velocity, and load 15 leaves an ejector mark, with slightly heavier bolt lift, but still not a hard bolt lift. You can either pick a load out of the middle of 11-13, and shoot 5 shot groups at 100 or 200 yards, and stick with that if your happy, or if you REALLY wanted to get the most out of it, I would load this</p><p></p><p>1. 75.3</p><p>2. 75.6</p><p>3. 75.9</p><p>4. 76.2</p><p>5. 76.5</p><p>6. 76.8</p><p></p><p>And do the same thing. This will help you dissect your node, and give you the absolute best charge. After I do my ladder tests, I always shoot at 200 yards on a calm day, with a 3 or 5 shot group to confirm my load is accurate. I have yet for a load to perform well on my 500 yard ladder test and then not shoot good at 200, but anything can happen. It seems like a lot of shooting, but this part usually only takes me 15-20 rounds. </p><p></p><p>And that's how I do my load development....My last ladder I did actually gave me a 1.5" 4 shot group with 4 different charges that varied .3 grains each, with under 1" of vertical spread (at 500). Needless to say, the target made my choice of what charge to pick pretty easy. </p><p></p><p><strong>Keep in mind, I do my ladder test AFTER finding my optimum seating depth.</strong> When you change your seating depth, it can change pressures, thus making your ladder testing void.</p></blockquote><p></p>
[QUOTE="codyadams, post: 1341551, member: 87243"] I would continue what you were doing, and work up until you find pressure. As stated, you will probably find a higher node. So say your loads came out like this.... 1. 70 2. 70.5 3. 71 4. 71.5 5. 72 6. 72.5 7. 73 8. 73.5 9. 74 10. 74.5 And 8 and 9 had the best chrono readings, but were spread out on the paper. Was your shooting the same? Was your barrel getting warm, causing some mirage to distort the target? Or some other issue? That could cause the higher impacts. If your shooting form was solid, trust the target. What I would do is load this.... 11. 75 12. 75.5 13. 76 14. 76.5 15. 77 And do the same method as you did. You will either find pressure, another node, or find that you still haven't found pressure. Either way, it is always good to KNOW where your max pressure is, that way you know how much wiggle room you have. But say you find another flat spot in velocity at loads 11, 12, and 13, 14 has a rise in velocity, and load 15 leaves an ejector mark, with slightly heavier bolt lift, but still not a hard bolt lift. You can either pick a load out of the middle of 11-13, and shoot 5 shot groups at 100 or 200 yards, and stick with that if your happy, or if you REALLY wanted to get the most out of it, I would load this 1. 75.3 2. 75.6 3. 75.9 4. 76.2 5. 76.5 6. 76.8 And do the same thing. This will help you dissect your node, and give you the absolute best charge. After I do my ladder tests, I always shoot at 200 yards on a calm day, with a 3 or 5 shot group to confirm my load is accurate. I have yet for a load to perform well on my 500 yard ladder test and then not shoot good at 200, but anything can happen. It seems like a lot of shooting, but this part usually only takes me 15-20 rounds. And that's how I do my load development....My last ladder I did actually gave me a 1.5" 4 shot group with 4 different charges that varied .3 grains each, with under 1" of vertical spread (at 500). Needless to say, the target made my choice of what charge to pick pretty easy. [B]Keep in mind, I do my ladder test AFTER finding my optimum seating depth.[/B] When you change your seating depth, it can change pressures, thus making your ladder testing void. [/QUOTE]
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Load development what do I do next?
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