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Posted: 2/6/2016 8:53:28 AM EDT
[Last Edit: wolfganggross][Edited]
Certified Sig Armorer-Classic Pistols
Joined:
Mar 2008
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MI, USA
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Really cool to see how those old pinfires worked.
Thanks for sharing, and I use Flicker vs photobucket, and their rules. Plus I have all my firearms related flicker pictures private. What nobody can see, nobody can report. |
NRA Benefactor Member, Veteran; US Army 5th Corps 1970-1972
The only time in my life when I got to Rock-N-Roll, and the ammo was free!!
(Avatar is the Unit's shoulder patch)
The only time in my life when I got to Rock-N-Roll, and the ammo was free!!
(Avatar is the Unit's shoulder patch)
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Wolf, your stuff is so useful and informative, I think ARFCOM should find you some storage space for your pictures.
Those pinfires must have been a bear to section! |
"--you can't conquer a free man; the most you can do is kill him."
Heinlein
NRA Life Member
Glock Certified Armorer
Certified AR15 Armorer
Certified M1911 Armorer
Heinlein
NRA Life Member
Glock Certified Armorer
Certified AR15 Armorer
Certified M1911 Armorer
|
Originally Posted By Useafortyfive:
What's the difference on the 5.45 ball, proof and reference loads? Materials used and purpose of those rounds? Was a little off on this one, sorry. Proofs are usually loaded 20-30% hotter, more powder, to test the function of the weapon, and to make sure it won't blow up. The black tip (called UZ) is a final weapons proof, and the yellow tip (called VD) is a barrel proof. NOT a reference, that would have been white, which is held to tight tolerances while loading, for ballistic studies. I grind the projectile (underwater). The steel core, hardened or mild in this case, can be cut flat and the entire cartridge is glued back together for final finishing. If you see a section with Tungsten Carbide core, it will be left whole. (Can't find much to cut that stuff.) |
| NATO and CIS standards rely on "reference" cartridges. These are rounds assembled to extremely exacting precision standards, and they are used as baseline measurements for both pressure and function. NATO's specs require not just maintaining specific pressure tolerances, but for primers and complete rounds to fire within a specific length of time as well. So "reference" rounds are THE standard against which production rounds are measured. |
"--you can't conquer a free man; the most you can do is kill him."
Heinlein
NRA Life Member
Glock Certified Armorer
Certified AR15 Armorer
Certified M1911 Armorer
Heinlein
NRA Life Member
Glock Certified Armorer
Certified AR15 Armorer
Certified M1911 Armorer
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