grainweight wrote:Say a .223 and .338 win mag both with perfectly matched loads. If you shot both in a wind tunnel at 200m so ballistics and bucking the wind etc. didn't come into it and the .223 wasn't running out of energy, would the .338wm be less accurate because of the shock going through the rifle when fired?
SendIt wrote:In reality though it's not really helpful information at all.
Everything that's being excluded like maintaining velocity, energy over distance, bucking the wind etc. etc. are all focus factors in choosing the right calibre so...
Warrigul wrote:On a side note:
We did a very unscientific experiment with Small rifle, Large rifle and large rifle magnum primers and there was a difference in rifle movement between them on the vibration monitor (but not through the scope). This came after a query from a member about whether there were any benefits from Lapua Palma cases(.308 cases with a small rifle primer).
Grrzrr wrote:Warrigul wrote:On a side note:
We did a very unscientific experiment with Small rifle, Large rifle and large rifle magnum primers and there was a difference in rifle movement between them on the vibration monitor (but not through the scope). This came after a query from a member about whether there were any benefits from Lapua Palma cases(.308 cases with a small rifle primer).
This will probably interest you, Warrigul. If you haven't read it already.
Large vs. Small Flash Holes in .308 Win Brass
The article title is .308 Win but there is testing with Palma cases in it as well.
Read the whole thing, but the bloke doing the testing seemed to think it was a bit of a bust.
brett1868 wrote:Fair point and I was thinking the same way till I thought a bit more about it....I can pull sub MOA @ 100M on a .22 and a 50BMG which have vastly different amounts of recoil yet achieve the same accuracy. So long as the uncontrolability is consistent then it becomes something that can be factored into the zero.
The 16" main guns of the Missouri can fire a 1200kg projectile out to 38km with near sub MOA accuracy and the recoil from them can move the ship up to a metre sideways in the water so they certainly have some recoil yet maintain sub MOA accuracy.
brett1868 wrote:The 16" main guns of the Missouri can fire a 1200kg projectile out to 38km with near sub MOA accuracy