#1
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Interesting bullet BC comparison
I just ordered up some 32gr BT lead free Noslers. Not really because they are lead free, but because they have quite a bit better BC than the lead ballistic tip boat tail bullets the same weight. Must be the length that makes for a good BC, the lead free anr flat base (even though the spec says BT) but they have a much better BC than the lead bullets.
http://www.midwayusa.com/product/980...ree-box-of-100 http://www.midwayusa.com/product/175...-grain-spitzer
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#2
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If they can't describe the bullet shape correctly, can they get the BC right?
Not suggesting it's wrong. Ken.
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#3
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Am I missing something here ?. the tech link on both pages advises that the optimum velocity for both bullets is 1600fps. Driving those from a small case such as 20VT then you will be way over 200 yards before velocity drops that low.
Launch one from a 204 or 20BR similar then 4000 fps at the muzzel is on the cards, 1600 fps will be somewhere out toward 450 yards I guess. Plenty of splatter especially below 100 yards on a small target. So what exactly do they mean by optimum velocity ?, possibly optimum speed for a controlled expansion maybe ?. A |
#4
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The ad reads "violent expansion" so I read that as below 1600, they'll just pencil hole.
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#5
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If you read further they say maximum velocity is "unlimited" whatever that means. Either way I will try some out of my 20 Swift 12 twist. Larry
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A gun is just like a parachute, if you really need one, nothing else will do. |
#6
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Checking the BC against the Sierra
32 gr Blitz, they are only .008 more......a "why bother" amount in my book. But if your bbl likes'em better, why not?
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#7
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Between these two it is .022, not much, but the highest BC is a flat base and the lowest one is a boat tail. Looks like the length of the bullet has more to do with the BC than the shape. Larry
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A gun is just like a parachute, if you really need one, nothing else will do. |
#8
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Seems like BC, even if defined as a G1 BC, means something different to every mfg. Sort of like an engine or chassis dyno, HP is supposed to have a specific definition but every brand reads different.
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#9
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This is a picture of the bullets side by side, when it comes to BC it seems the physical length of the bullet is more important than it's shape. Larry
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A gun is just like a parachute, if you really need one, nothing else will do. |
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