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Thread: SAM Recoil springs & + P Ammo

  1. #1
    CGN Regular Mr Wolverine's Avatar
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    Mar 2004
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    SAM Recoil springs & + P Ammo

    Several customers have raised questions on this subject, the following is straight from the factory.

    On single stage recoil spring guns (all guns except Titans & Sigma) it's 15-18lbs. Titans & Sigma9‎ it's 21-24lbs. Production dept advises no need of different tension springs necessary for +P ammo. Warning: DO NOT use +P ammo in pistols with stainless barrels.

    Any pistol unit regardless of caliber which the slide is stainless, the barrel that goes with it will NO longer be 416 stainless, but will be match with barrel 4140 in MIRROR CHROMED FINISH. This is for durability purposes, since 4140 is no doubt tougher and more reliable than stainless. You know based on experience with ATI before. We are recommending to make this necessary change for long-term sake, not just because we want to. Kindly explain to the buyer. 4140 metal on a crucial part such as a barrel is more dependable in terms of longevity and safety. So any black- slide unit pistol, barrel will be 4140 black, any stainless-slide unit pistol, we match it with barrel 4140 in mirror chromed finish (actual appearance almost the same as stainless). Barrel breakage is more rare to happen in a 4140 steel barrel "than" a stainless barrel. This way we can avoid future complaints, manufacturer and buyer are all happy.

    Once again, this minor change is for any next coming p.o. This is a "long term improvement" for everyone. Just a heads up info for you. Website specs wordings will be changed soon.

  2. #2
    CGN frequent flyer Kveldulf's Avatar
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    Any of you who are into sword collecting probably already know that stainless steel replica swords must NEVER be used in mock combat. SS is prone to fracture. There is a video floating around of a man tapping a cheap katana on a table while he begins his review -- the tip breaks off and stabs him in the leg. Another video shows a man swinging his sword when the blade snaps off from the tang and goes flying into the next yard.

    I believe the problem is the high chromium content; it is too high to dissolve properly in the iron and causes weak points. The large grain structure of stainless steel can also be detrimental to smooth operation although this problem seems to be minor.

    4140 steel does contain chromium (and molybdenum) but only about one-tenth as much as stainless -- it gains hardness without loosing toughness. Good call by Shooters Arms.
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