Reply With QuoteOriginally Posted by EZFEED
Be careful of hand picked. Suppose to be the best of the litter (collection in stock) but if the litter is all runts............it money wasted.
Maybe you could pay a little more for a handpick? Usually only $20 or so at other places.
Be careful of hand picked. Suppose to be the best of the litter (collection in stock) but if the litter is all runts............it money wasted.
Hey guys was wondering how do they exactly measure the dimensions of the rounds, for example the NATO 5.56x45, at which position do they obtain the dimensions for that round?
Thanks!
The diameter of the bullet is 5.56mm (at its widest point, I'd imagine) and the case is 45mm long (at its longest point, I'd imagine).
Edit: Here you go, wiki knows all.
Cartridge dimensions
The 5.56x45mm NATO has 1.85 ml (28.5 grains H2O) cartridge case capacity.
5.56x45mm NATO maximum NATO cartridge dimensions. All sizes in millimeters (mm).[2][3]
Americans would define the shoulder angle at alpha/2 = 23 degrees. The common rifling twist rate for this cartridge is 178 mm (1 in 7 in) or 229 mm (1 in 9 in), 6 grooves, Ĝ lands = 5.56 mm, Ĝ grooves = 5.59 mm, land width = 1.88 mm and the primer type is small rifle.
According to the official NATO proofing guidelines the 5.56x45mm NATO case can handle up to 430 MPa (62,367 psi) piezo service pressure. In NATO regulated organizations every rifle cartridge combo has to be proofed at 125% of this maximum pressure to certify for service issue. This is equal to the C.I.P. maximum pressure guideline for the .223 Remington cartridge, that is the 5.56x45mm NATO parent cartridge.
Dimensions used in nomenclature are sometimes iffy. If your really interested, pick up a book on reloading and read it. Sierra Bullets has a good book.
Working on a restoration of an M1 Carbine. Got an low wood Underwood Stock with Cartouches intact and am in the process of giving it about 12 coats of handrubbed Linseed Oil. The stock has 3 brass pins as arsenal repairs at some point, but almost no dents or dings.
Also acquired an early "L" filp sight to replace the Milled Adjustable sight, and the correct front band without Bayonet lug
nice ar's Gajin
the 20" barrel with the rail for front site is real nice
i gotta get up to speed on screwin a barrel on an a2 upper i have layin around.
had bushmaster do a swap of the upper for a new flat top i love it, cost 222.89, with new complete upper and test fire - but i think i could have done it myself
i got a dpms wrench about a year ago might as well use them
excellent thread, gotta check it more often
Well i hope not repost or something but this site can be pretty useful about aimpoint issue too;
http://www.aimpoint.com/
Looking forward to seeing that M1 once you're done with it, Linedoggie.
Thanks, Gunge.
The AR should be complete soon. Just waiting on the charging handle. I ordered one from SOG Armory the week before last. Waited a week, and then called. I was told they've been out of the steel charging handles for a while, and they didn't know when my order would be filled. Annoying, especially since I was sent an order confirmation e-mail. You'd think they would have mentioned it. Anyways, I cancelled the order, and purchased their aluminum charging handle instead, AFTER confirming that they actually have them in stock.
I've got a sling swivel mount on it's way from Midwest Industries, and USGI sling from a seller on AR15.com's Equipment Exchange as well.
I can't wait to be able to start putting rounds through it......
Built this one -
HBAR on a right stag lower. It is built mostly from spare parts I had laying around. The barrel, lower, lower kit are new - everything else is out of the parts box.
M1903 MkI - built up from stripped barrel and reciever.
Almost all of mine have been modified in some way, especially my M4 - the upper on the HBAR above was the original upper on my M4.
The complete long rifle collection is HERE
Last edited by Moriarti; 03-10-2009 at 07:31 AM.
If you follow the link above, you will see an M1 that I am moding to a sort of C/D style - but I am gonna go with a scout rail replacing the upper handguard instead of going with the original mount...which I have. I am even thinking of mounting an ELCAN or something wierd on it instead of a regualr scope.
Nice collection, very nice indeed, Thanks. H.
x2 what Hollis said, Moriarty. Nice!
so I went to a gun show today, looking for an AR upper. this guy had a bushmaster 16" heavy barrel A3, phantom flash hider, daniel defense free-float rail, and it had only about 100 rounds through it. he was asking $800 for it. good deal? i'm thinking about going back tomorrow to get it.
A year ago that would have been an absurd price, but it's about average now. Does the upper include the bolt carrier group? That would make it a much better deal.
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