15-09-2014, 12:45 AM
(This post was last modified: 15-09-2014, 01:35 AM by John Lewis.)
Bob Prudhomme Wrote:Albert Doyle Wrote:A good lesson in not trusting evidence from experts. Maybe Frazier took a caliper reading from a slightly warped side of the imperfect magic bullet. There's no excuse for the math error though.
All you would really need to know is that the available Western Cartridge ammunition was .264 standard.
Was the .2677 diameter Carcano bullet the same width as the Carcano lands?
I think we went over this before. Frazier spoke about the Magic Bullet, CE 399, being slightly flattened on the base and, for this reason, he also measured the unfired bullet in the cartridge found in the chamber of C2766 on the 6th floor. Of course, after the FBI purchased their own WCC 6.5mm Carcano ammo, they could measure all the bullets they wanted to. I don't believe it was a math error. I believe Frazier measured the diameter of the bullet at 6.65 mm and, instead of converting to inches, simply looked up the diameter in inches in a textbook.
If the WCC bullets really did measure 6.65 mm, then they would have been ridiculously inaccurate in a Carcano rifle, as 6.65 mm = .2618" or .262".
As Dave Emary said in the article, the twenty Carcano rifles he measured were all between .268" and .269" across the grooves. The measurement across the lands in a Carcano is .256", as it is in all 6.5mm calibre rifles.
And yet the Carcano bullet produced by Hornady (a company whom you have previously dismissed as 'disinfo' agents) is actually marketed as .267" (as previously linked to a few posts back) and is, despite your wailings, even smaller in reality.
I find it somewhat strange that you seem to be Hornady's foremost advocate when they publish what seems to be what you seem to want to promote but not the other way around. You claim to be be an arch 'disinfo' enemy yet seem quite happy to believe any marketing puffery that a bullet company decides to put out as long as it meets with what you want to promote. Don't you think that it's pretty obvious that Hornady would employ their 'scientist' to say that their new bullet was the greatest thing since sliced bread? Do you honestly belive that there are huge numbers of people who havn't been able to hit a barn door with their Carcano rifles whilst standing on the lock because all the bullets they could get were .004" too small and so had to wait for 60 years plus for Hornady to rectify the situation?? If so then you are seriously deluded, mate.
To ask again; can you provide your source as to whom has actually measured an unfired bullet from a WCC 6.5x52 cartridge and whom can confirm that it does indeed measure .264"? To date we have only the link I gave and that chap says that they measure .266".
You also say that a .262" bullet fired through a barrel with a .256" bore diameter and with a .268" bore would be 'ridiculously inaccurate'. What is your evidence for that? Have you personally tried it?
By the way; didn't you say that you were 'out' of this discussion?
JL.