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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Questions & thought's on 6mm for BR and prarrie poodles.
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<blockquote data-quote="Ackman" data-source="post: 68430" data-attributes="member: 4206"><p><strong>Re: 6mm and prairie dogs......</strong></p><p></p><p>Of course there are factors involved in barrel heat...and yes a 6mm bore has more surface area to dissipate heat. But bearing surface equals friction and friction equals heat. More powder burned equals more heat. That's physics. It's a stupid thing to argue. </p><p></p><p>Of course there are VLD bullets without a whole lot of bearing surface, but look at the post. He says "90-ish" gr. bullets....not 105 or 107VLD's. </p><p></p><p>No, just "dead" isn't enough. Seeing fireworks is part of the fun. I like to see something more exciting than just "dead." Suit yourself on that one.</p><p></p><p>Bullets: I chose Ballistic tips because - 1)I shoot the 55's in a 6BR. 2)I shoot a lot of 70TNT's in 6mm, but used the 70BT because it has a higher BC and I figured there might be someone who'd say "nyah-nyah, you purposely used a doggy 70gr. bullet..." 3) I used the 90gr BT because the original post said "90-ish gr" bullet, not 105 or 107, and because the 55's and 70's were also Noslers. 4)And...I used Noslers because the manual was right there beside me and it listed all the BC's. That's why I chose the bullets I chose. Those numbers were meant to give a relative IDEA of what to expect, and I stated that twice in my post. And go back to his post again....he says out to 600yds. You can juggle numbers any way you please, but I was answering his question according to his conditions and had no ulterior motives.</p><p></p><p>I don't just shoot prairie dogs. I won't say where, but there are days when squirrels, rockchucks, prairie dogs, and a crow or two all fall under the gun on one trip. And maybe a badger or skunk. Often there'll be lots of PD targets where the main pd gun is a .17AH or .221, at way-way under 300yds. Anything 500 or 600yds would be because I didn't feel like driving closer. If people want to shoot stuff at longer distances, that's fine. But it's not necessary. I seriously doubt called eyeball shots at 500yds, or even considerably less. And guys who talk 1,000 or 1300yd prairie dog kills don't mention how many rounds it took to make that hit. Or how many of those hits were a leg or part of a butt, and the thing dragged itself into it's hole. No matter how accurate the gun, over that distance it doesn't take much wind to blow a bullet off enough to turn the shot into a wound or a miss.</p></blockquote><p></p>
[QUOTE="Ackman, post: 68430, member: 4206"] [b]Re: 6mm and prairie dogs......[/b] Of course there are factors involved in barrel heat...and yes a 6mm bore has more surface area to dissipate heat. But bearing surface equals friction and friction equals heat. More powder burned equals more heat. That's physics. It's a stupid thing to argue. Of course there are VLD bullets without a whole lot of bearing surface, but look at the post. He says "90-ish" gr. bullets....not 105 or 107VLD's. No, just "dead" isn't enough. Seeing fireworks is part of the fun. I like to see something more exciting than just "dead." Suit yourself on that one. Bullets: I chose Ballistic tips because - 1)I shoot the 55's in a 6BR. 2)I shoot a lot of 70TNT's in 6mm, but used the 70BT because it has a higher BC and I figured there might be someone who'd say "nyah-nyah, you purposely used a doggy 70gr. bullet..." 3) I used the 90gr BT because the original post said "90-ish gr" bullet, not 105 or 107, and because the 55's and 70's were also Noslers. 4)And...I used Noslers because the manual was right there beside me and it listed all the BC's. That's why I chose the bullets I chose. Those numbers were meant to give a relative IDEA of what to expect, and I stated that twice in my post. And go back to his post again....he says out to 600yds. You can juggle numbers any way you please, but I was answering his question according to his conditions and had no ulterior motives. I don't just shoot prairie dogs. I won't say where, but there are days when squirrels, rockchucks, prairie dogs, and a crow or two all fall under the gun on one trip. And maybe a badger or skunk. Often there'll be lots of PD targets where the main pd gun is a .17AH or .221, at way-way under 300yds. Anything 500 or 600yds would be because I didn't feel like driving closer. If people want to shoot stuff at longer distances, that's fine. But it's not necessary. I seriously doubt called eyeball shots at 500yds, or even considerably less. And guys who talk 1,000 or 1300yd prairie dog kills don't mention how many rounds it took to make that hit. Or how many of those hits were a leg or part of a butt, and the thing dragged itself into it's hole. No matter how accurate the gun, over that distance it doesn't take much wind to blow a bullet off enough to turn the shot into a wound or a miss. [/QUOTE]
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Questions & thought's on 6mm for BR and prarrie poodles.
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