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Rifles, Reloading, Optics, Equipment
Reloading
HELP WITH SATERLEE VELOCITY TEST
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<blockquote data-quote="Chase723" data-source="post: 1958814" data-attributes="member: 21524"><p>To the OP, I don't I didn't read through this entire thread, so my response might be some ignorant garbage. That said, I use the Satterlee method and have had what I would consider good results with it. Usually, the load I end up with will easily shoot 1/2 MOA, commonly 1/4-1/3, and sometimes in the .1s. Basically, all rounds touch and that's good enough for me. Some people haven't had it work for them. Fortunately, over the course of 6 rifles and several bullet weights, it has for me thus far. </p><p></p><p>Making the assumption that you are capable of shooting sub 1/2 MOA consistently if a rifle is up to the task, a couple things that I think make a difference and lead to consistent results are 1) You have to have a "good" rifle with an excellent barrel. I.e. one from a reputable manufacturer that people have used to set world records with. The barrel has to have the inherent accuracy potential for you to, well, unleash it. So pick something like a Bartlein, Benchmark, Kreiger, K&P, Brux etc. Lighter triggers help too. I now shoot Trigger Tech Diamonds and mine are all set at a little under 1lb. 2) Reloading consistency. Accurate charge weights. Good brass with consistent internal case volume. Brass that's annealed every firing. Primers are all seated well. Etc. 3) Shoot it more than once.</p><p></p><p>I start, like you, and shoot a velocity ladder in 0.2gr increments. I then shoot it again and make sure that the velocity nodes I see remain the same. Usually there are 2 nodes, a lower one and a higher one, sometimes a 3rd right about max. If it's not obvious which is best, I then shoot another couple small ladders through those nodes in 0.1gr increments and look for the one that had the lowest ES across the node. I also compare it to the previously collected velocity data. Usually that ends up being a total of ~20-30 rounds. I then load up 6 rounds of what I think are the best 2 or 3 loads and shoot them at either 300 or 500. At this point I've come to expect that they will shoot ~1/3 MOA with an ES of 15-20. Literally one smudge on steel. I'm fine with that. I just pick the best one and run with it. If theres no wind, shoot them at as far a distance as possible because the farther out you go the bigger the differences in the loads become. </p><p></p><p>The other thing about it is that the load you've just developed is based on the seating depth/jump distance that you started with. Keep this in mind if the groups start opening up. Often you'll just need to chase it back to the original jump distance, and add 0.1 or so grains of powder to get your velocity back to where it was, and you're back in action.</p></blockquote><p></p>
[QUOTE="Chase723, post: 1958814, member: 21524"] To the OP, I don’t I didn’t read through this entire thread, so my response might be some ignorant garbage. That said, I use the Satterlee method and have had what I would consider good results with it. Usually, the load I end up with will easily shoot 1/2 MOA, commonly 1/4-1/3, and sometimes in the .1s. Basically, all rounds touch and that’s good enough for me. Some people haven’t had it work for them. Fortunately, over the course of 6 rifles and several bullet weights, it has for me thus far. Making the assumption that you are capable of shooting sub 1/2 MOA consistently if a rifle is up to the task, a couple things that I think make a difference and lead to consistent results are 1) You have to have a "good" rifle with an excellent barrel. I.e. one from a reputable manufacturer that people have used to set world records with. The barrel has to have the inherent accuracy potential for you to, well, unleash it. So pick something like a Bartlein, Benchmark, Kreiger, K&P, Brux etc. Lighter triggers help too. I now shoot Trigger Tech Diamonds and mine are all set at a little under 1lb. 2) Reloading consistency. Accurate charge weights. Good brass with consistent internal case volume. Brass that’s annealed every firing. Primers are all seated well. Etc. 3) Shoot it more than once. I start, like you, and shoot a velocity ladder in 0.2gr increments. I then shoot it again and make sure that the velocity nodes I see remain the same. Usually there are 2 nodes, a lower one and a higher one, sometimes a 3rd right about max. If it’s not obvious which is best, I then shoot another couple small ladders through those nodes in 0.1gr increments and look for the one that had the lowest ES across the node. I also compare it to the previously collected velocity data. Usually that ends up being a total of ~20-30 rounds. I then load up 6 rounds of what I think are the best 2 or 3 loads and shoot them at either 300 or 500. At this point I’ve come to expect that they will shoot ~1/3 MOA with an ES of 15-20. Literally one smudge on steel. I‘m fine with that. I just pick the best one and run with it. If theres no wind, shoot them at as far a distance as possible because the farther out you go the bigger the differences in the loads become. The other thing about it is that the load you’ve just developed is based on the seating depth/jump distance that you started with. Keep this in mind if the groups start opening up. Often you’ll just need to chase it back to the original jump distance, and add 0.1 or so grains of powder to get your velocity back to where it was, and you’re back in action. [/QUOTE]
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HELP WITH SATERLEE VELOCITY TEST
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