I think you have some good points here.We really need to be getting away from BC's and use purpose drag laws more if we want to see how to improve things. We need detailed drag breakdowns of all of the separate parts of the projectile, otherwise we may spend all our time trying to reduce the drag of something which is relatively unimportant. For example, we may concentrate on the nose of a pellet but, unless we are shooting at 1000 ft/sec or above, a round nose contributes very little to the overall pellet drag. Base drag is a much bigger component.
The base drag seems to be a lot bigger force than we understand.
The nose profile does have some interesting properties though.
Here's a photo of two groups @ 173 yards. Same POA and same slug base.
Only difference was the shape of the nose profile. Same weight for an apple to apple comparison.
The upper slug needs to be shorter (46.1 gr.) for acceptable accuracy though.
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