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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Announcing the New Hammer HHT
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<blockquote data-quote="QuietTexan" data-source="post: 2883315" data-attributes="member: 116181"><p>Because they have zero interest in terminal performance. You can't divorce the entire point of a hunting bullet from ballistic performance like a target shooter can. You also might be overstating how much drift is problematic in a sport where you get sighting rounds. 6 Dasher is common on 1000 yard ranges yet drifts significantly more than 284s or 30 cals. It's used because it doesn't matter nearly as much how much lateral movement there is in total (because that's corrected out with sighters) but rather how much in aggregate in the group. The goal is how fast the shooter can run the gun and stay on target to stay in the same wind. Smaller case with less recoil runs significantly faster on the line. They 100% get to cheat on the wind because they get sighters to find it - that's entirely different than a first-shot-only-shot situation like shooting at an animal where there has to be a balance of getting there precisely but also working when it hits. </p><p></p><p>In short range benchrest for group ag velocity can actually be a negative factor. I've known guys who dropped from 6 Dasher back to 6 BR because the Dasher needed to run faster to be in tune and that led to more dispersion in groups than the same bullet running slower. 30 BR pushes 110gn flat base bullets about as slow as possible but groups incredibly well. The same bullet going slower will in theory drift more, but it doesn't matter at the ranges they shoot at.</p><p></p><p>On the flip side the CE .375 400gn Lazer is probably one of the most common ELR bullets shot, and it's a copper mono. Bullet to bullet consistency is significantly more important than maximized BC in that game. Don't get me wrong, they want as much BC as they can possible get - but a less than 1% BC variance from shot to shot is a requirement that very long cup-and-core bullets can't hold that as well.</p></blockquote><p></p>
[QUOTE="QuietTexan, post: 2883315, member: 116181"] Because they have zero interest in terminal performance. You can't divorce the entire point of a hunting bullet from ballistic performance like a target shooter can. You also might be overstating how much drift is problematic in a sport where you get sighting rounds. 6 Dasher is common on 1000 yard ranges yet drifts significantly more than 284s or 30 cals. It's used because it doesn't matter nearly as much how much lateral movement there is in total (because that's corrected out with sighters) but rather how much in aggregate in the group. The goal is how fast the shooter can run the gun and stay on target to stay in the same wind. Smaller case with less recoil runs significantly faster on the line. They 100% get to cheat on the wind because they get sighters to find it - that's entirely different than a first-shot-only-shot situation like shooting at an animal where there has to be a balance of getting there precisely but also working when it hits. In short range benchrest for group ag velocity can actually be a negative factor. I've known guys who dropped from 6 Dasher back to 6 BR because the Dasher needed to run faster to be in tune and that led to more dispersion in groups than the same bullet running slower. 30 BR pushes 110gn flat base bullets about as slow as possible but groups incredibly well. The same bullet going slower will in theory drift more, but it doesn't matter at the ranges they shoot at. On the flip side the CE .375 400gn Lazer is probably one of the most common ELR bullets shot, and it's a copper mono. Bullet to bullet consistency is significantly more important than maximized BC in that game. Don't get me wrong, they want as much BC as they can possible get - but a less than 1% BC variance from shot to shot is a requirement that very long cup-and-core bullets can't hold that as well. [/QUOTE]
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Announcing the New Hammer HHT
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