NitroX
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| (.700 member) |
| 27/10/13 03:02 PM |
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Re: .500 NE Velocity / Power for Buffalo
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Quote:
I wonder about doubles only shooting well at a particular range.
That is because it is often a load of rubbish ie a double can only be shot to regulation at a "specific" distance.
What a useless piece of shooting crap a double rifle would be if this was actually the case ... which of course it is not.
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.... Forsyth then wrote he believed that if the barrels shot perfectly, ie: the gun was regulated to shoot parallel, the bullets or balls would be parallel at ALL ranges.
As the rifle is a Heym ... the regulators at Heym have told me, USA customers usually ask for a double to shoot "parallel", while European customers request rifles to "cross" at a certain distance.
With reality at different ranges and increasing size groups - due to MOA over different distances, slight ammo variations, etc if a rifle is designed to "cross" say at 75 metres, or shoot "parallel", will the difference be discerable at 100 metres?
While my Valmet/Tikka in 9.3mm is a cheapie, it is interesting to play with as with the barrel wedges it is self "regulating". It also shoots one-hole two shot groups with each barrel at 100 metres so the movement/changes at each range is quite noticeable and discernable. I have mine shooting parallel at 100 metres 25 mms apart.
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He stated he'd owned 2 that shot perfectly and proved such shooting by shooting through paper at ranges out to 100yards, where at every 10 yards paper, the balls (grouping) were still hitting parallel. W.W. Greener, in 1911, IIRC from his writing, agreed with the perfect regulation as being parallel.
Interesting.Does he state what the rifle and calibre was?
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I do not think it out of line to attempt to find a load that shoots 'perfectly' - ie: parallel - even though for hunting purposes, that is not necessary and slight allowances can be made for the size of the 'X' ring.
In theory the bullets must be exiting consistently at the muzzle at the same distance from each other. Even given barrel time, bullet speed while in the barrel and muzzle movement during it, bore distance apart etc. If the muzzle exit distance apart is extreme, this would show up at close ranges such as 10 metres or 25 metres and closing by 75 metres ie crossing. I don't know if I have ever seen this myself, so I doubt it is the case.
The above idea of perfectly shooting parallel should be easily testable with some DRs IMO especially with medium calibre rifles as many are extremely accurate. And also easier to shoot accurately with less recoil.