I just found one seriously defective 9x19mm ammunition on a 100 round pack by Winchester (9mm Luger "Target / Range", 115 Grains Full Metal Jacket, ref. USA9MMVP, Carton No. CT510D E125654, Bar Code 2089221297, Made In USA).
The defective ammunition appears to be within a regular case, fitted with a standard primer but with a defective bullet (on both shape - showing a semi-flat top instead of the standard ogival - and weight). As the photos detail, this defective ammunition weights only 80,9 grains (when just the bullet should weight 115 grains !) - compared to the 182,3 grains of a regular ammo from the same box. Due to this severe "weight loss" I'm due to assume that this might be the case of a "jacket only" bullet - only the light external cooper jacket is present and not the heavy lead inside (and that could also explain the deformed top - due to the assembling pressure on a light component).
The defective ammunition appears to be within a regular case, fitted with a standard primer but with a defective bullet (on both shape - showing a semi-flat top instead of the standard ogival - and weight). As the photos detail, this defective ammunition weights only 80,9 grains (when just the bullet should weight 115 grains !) - compared to the 182,3 grains of a regular ammo from the same box. Due to this severe "weight loss" I'm due to assume that this might be the case of a "jacket only" bullet - only the light external cooper jacket is present and not the heavy lead inside (and that could also explain the deformed top - due to the assembling pressure on a light component).
A standard 9x19mm ammuniton, weighted 182,3 grains
The defective 9x19mm ammuniton weighted only 80,9 grains (!)
On the right the defective ammunition (semi-flat nosed)
On the left the standard ammunition(ogival nosed)
On top the defective ammunition (semi-flat nosed)
On the bottom the standard ammunition (ogival nosed)
Coincidently enough there were 101 units (counting with the defective one) on the card box. The defective one was easily spotted while transferring the ammunition, one by one, hand sorted, to a plastic carry case with individual dividers (with this particular ammunition weighting approx. half of what it was supposed it would be hard to miss).
Winchester 100 x 9mm Luger, 115 grains, FMJ, card box, Made in USA
All photos (c) P. Mateus, 2010
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