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Posted: 9/5/2008 3:36:28 PM EDT
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Ok, here's a new one. It is generally accepted (I think) that any given barrel has a certain velocity/ bullet combo that causes it to "ring or vibrate" in such a way that when shot it shoots it's best ability. Maybe my "details" off but I think you get what I'm trying to say. So, I've read that a barrel will have multiple velocity/bullet combos that it likes. I've been lead to believe (maybe incorrectly) that a given bullet will do well at multiple specific velocities...(which are different for each individual barrel). Is this correct?? If so then here is my question. Has anyone found/experienced this themselves? Have you found 2 different velocities using the SAME bullet/powder that is VERY accurate. If you have, what was the approximate velocity difference... (or at least if you didn't chrono them, what was the weight difference in charge?) |
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The reason I'm asking this is... I have a load that is pretty accurate, 1" or slightly under @ 100 yards w/ 10 shots, and as small as 5/8" with 5 shots. The load is pretty much at published max. Though I worked up to it & haven't seen any signs of excess pressure, a few people here have commented that it seemed a bit hot based on the velocities I'm getting. (It's a 68g Hornady HPBT match going at 2975 f/s avg from 18" HBAR.) Though it'd be a great Tactical round... It is in reality only ever likely to punch holes in paper. So, my goal is to maintain the accuracy in a more sedate load. There doesn't seem to me any good reason to push the envelope for this use, and that was never my intention. It just so happened that the most accurate load in this case happened to be the max load. Usually, my experience is the opposite, lighter to mid-range end up being the best. |
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Your thinking is correct. There will be a couple of sweet spots throughout your load development. Most people will chose the faster one for better wind-bucking ability(assuming LR shooting), but if they are close in charge weight you can have a shoot-off with those two loads to pick the one you might think is more accurate. |
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