MFS sparks why? And POI.

norlandgeese

norlandgeese

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I have read casual comments about this before, just want to get you guys' expert knowledge to enhance my understanding. I witnessed first hand in multiple occasions the MFS 223 ammo causing sparks out of the muzzle, not muzzle flash but distinctive sparks. I know that they are bi-metal jacket, composed of different material. Obviously will behave slightly differently from copper.

My questions:
  • What exactly in the bi-metal jacket causes the sparking? And how? It seems to happen with both chrome-lined and non-chrome-lined barrels alike.
  • Can POI be affected quite a bit between copper and bi-metal jacketed ammo? I know different projectile weight, seating depth and powder charges etc will shoot differently, I am wondering if all things being equal would the bi-metal jacket alone cause significant impact to POI.

What I am NOT trying to start a debate on:
  • Crappy ammo blah blah, 3rd world this and that, buy American only, etc.
  • "If this will kill your barrel debate". I already know if you blast rapid fire for a 1000 round with barrel glowing red, bi-metal will cause more wear than copper.
 
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Any info on why MFS is prone to unburned powder?
I have tried a dozen other brands both NATO and SAAMI specs plus my own hand loads without such sparks.
 
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norlandgeese said:
I have read casual comments about this before, just want to get you guys' expert knowledge to enhance my understanding. I witnessed first hand in multiple occasions the MFS 223 ammo causing sparks out of the muzzle, not muzzle flash but distinctive sparks. I know that they are bi-metal jacket, composed of different material. Obviously will behave slightly differently from copper.

My questions:
  • What exactly in the bi-metal jacket causes the sparking? And how? It seems to happen with both chrome-lined and non-chrome-lined barrels alike.
  • Can POI be affected quite a bit between copper and bi-metal jacketed ammo? I know different projectile weight, seating depth and powder charges etc will shoot differently, I am wondering if all things being equal would the bi-metal jacket alone cause significant impact to POI.

What I am NOT trying to start a debate on:
  • Crappy ammo blah blah, 3rd world this and that, buy American only, etc.
  • "If this will kill your barrel debate". I already know if you blast rapid fire for a 1000 round with barrel glowing red, bi-metal will cause more wear than copper.
Click to expand...

I have shot a bunch of MFS 223/5.56 and did not notice excessive muzzle flash/sparks out of an 18" barrel. Most of my shooting with that round has been done in daylight/full sun.

Unlike their 308/7.62 ammo, which out of my 16" rifle would produce a BLINDING muzzle flash, even in broad daylight. I've never seen any other ammo product that kind of a flash, save for a short barrel Mosin.
 
saskcop said:
It never ceases to amaze me that the Russians don't use a ball powder in loading this for ease of loading and cost, etc.
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AFAIK only perm makes ball powder, kazan and tambov are extruded. All the plants are woefully under capitalized. Kazan may see an upgrade in the future

FWIW MFS is Barnaul.
 
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