On 17 Jan 2006 05:14:52 -0800, "Guy Fawkes"
wrote:


Gunner wrote:
On 16 Jan 2006 19:02:53 -0800, "Guy Fawkes"
wrote:

OK, question for you

(I'm asking from the UK where guns = prison time btw)

Did someone really neck a win 458 down to .17 calibre and actually fire
it and actually get 4500 fps or was I just being wound up all those
(20) years ago?


Its possible..but I suspect its urban legend. Way overbore.

as in "more gas (from the charge) than you can use to push the bullet"?

I suspected as much

Ayup. The pressure spike would be horrendous. Possible with a duplex
or triplex load..but thats in the rhelms of voodoo reloading.

ain't search engines wunnerful

quote
The .220 Swift is the fastest factory round, at 4200 fps.

The 22 Chetah gets up to 4285 fps using a 50 grain bullet and a necked
down .308 cartridge.

The .22 Eargesplitten Loudenboomer hit over 5000 fps, based upon the
.378 Weatherby in the 60's by P.O. Ackley.

I've seen two reports of +5100 fps speeds, one with a 22-243
Middlestead and the other with a 22-250AI.

Mark in Utah

end quote


Bore life tends to be rather short over 4200 fps, even with todays
steels

Gunner

"Deep in her heart, every moslem woman yearns to show us her tits"
John Griffin