Quote:
Originally Posted by Lazer
I find this thread rather humorous; a bunch of semi-pro writers attempting to create the perfect murder.
-Any machining inside a barrel, either with a rifling button, drill bit, or reamer will leave machining marks that will more than likely be transferred to a bullet when fired.
-Removing the rifling from a barrel will reduce the velocity of the projectile and horribly reduce accuracy.
-A recovered bullet having no land and groove impressions, on its face, is an evidence class characteristic that is so unique that it's grossly significant.
-Finding the same caliber weapon as that of the bullet and discovering that it had its rifling removed is great inculpatory evidence of pre-mediation. Since the barrel is reamed from, lets say .22 to .24 to get rid of the rifling we are going to end up with an nice unique bullet of .24 caliber. "Excellent," said the inspector as he looked at the dial on the calipers.
-Since the weapon used at this scene is probably from a semi-auto, it would eject the fired shell casing which may or may not be easy to recover before the shooter left the scene –certainly a challenge for anyone wanting to flee. Breech face and firing pin impressions on fired shell casings are easier to link to a specific firearm than a bullet.
So why ream a barrel? Why not just throw the weapon off the bridge or better yet, wipe it clean and dump it at the scene so it doesn't link back to the shooter?
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There is also the problem of GSR or Gun Shot Residue to deal with. When you fire a gun tiny bits of powder stick to everything in the immediate area including the shooter and his/her clothes. So unless they make a clean get away from the scene when the police test them for GSR the results will send up some rather large red flags.