Posted: 1/28/2015 12:13:24 AM EDT
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The rifle, Rem 700 16" SPS Tactical 1-10 TB, it has 836 rounds through it and the barrel and action is factory.
The round was a factory loaded Rem. Core Lokt 150gr PSP. What could cause this type of split. Weak bad brass? The round dropped about 14" lower than it should have and sounded off. Buddy said it sounded like a shotgun or musket not a rifle. 
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Improper case neck annealing. Did the primer back out any? Was the case difficult to extract? The primer looked normal/good. No bleed out around the primer either. Just the weird split. Case extracted easily and if I didnt check all my spent cases I'd never known anything was up. It really looks more like a big gouge not a split. I wonder if when the case was sized the die had a burr or something. This is the 6th round out of the box I have fired. All over rounds were good. |
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it's a pretty normal split neck. it happens. i wouldn't obsess over it, especially if it was factory ammo and not your reloads. if that's duty ammo for you, i'd use a different lot though. if that's your reload, then you need to anneal your necks. Not reloads or duty ammo. Duty ammo is Fed. Sierra Matchking 168 BTHP, this was a Rem. Core Lokt 150 PSP. I have fired 6 rounds out of this box. All others were fine. You say it's a "normal" split neck? I've never seen a neck split but stop before the rim of the case. That's what seems so weird to me. |
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This was a new factory Remington round. Quoted:
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I'm gonna agree with Ravenu. Improperly annealed case neck, it happens a lot with brass that's been loaded 5-7 times without being re-annealed. This was a new factory Remington round. Brass that has been worked by firing and re-sizing becomes work hardened, thus brittle, and will bust like yours, by the same token that particular case was drawn from a little brass nugget when it was made, that process works and hardens the brass that's why they anneal the case necks after the case is made. Hence an improperly annealed case neck will bust/crack upon firing. |
