Like Hoser, we have tested the difference between CMJ and FMJ in 9mm. They work the same. Colorado4Wheel, Nov 2, 2012. Colorado4Wheel, Nov 2, 2012
Mar 06, 2008 · I fail to understand why CMJ is made vs FMJ. If you're really curious: FMJ bullets are made by taking a piece of copper, hollowing it out, and pouring lead into the hollow. CMJ/TMJ bullets are made by taking an already-formed lead bullet and plating it with copper.
The difference is more than likely NOT due to CMJ vs FMJ.
If it was equipment related, it would be more likely due a sizing issue with the bullets (reads: barrel to bullet seal) – the jacket (or complete lack thereof – since cast\lead bullets have no jacket) is irrelevant.
Mar 01, 2011 · Plated Bullets and Capped FMJ (CMJ) are cleaner to shoot than FMJ since the soft lead is protected from the expanding gases. The softer copper of plated bullets will lend them towards copper fouling, especially in rougher barrels. (Plated copper is basically annealled copper, so it’s much softer than cold drawn & swagged jackets)
Apr 06, 2010 · FMJ/CMJ’s are pretty much identical to one another except for the little bit of lead exposed at the base which will eventually cause a build up in Open gun comps, but really does almost nothing to the lead that will get into your system (it’s almost entirely from the primer).
May 26, 2014 · Mil-spec FMJ vs Civ FMJ and TMJ vs CMJ Discussion in ‘Ammunition & Reloading’ started by Secondhand_Hero, May 25, 2014. Page 1 of 2 1 2 Next > May 25, 2014 #1 . Secondhand_Hero New Member. 111 0 0. Hello, users! This is my first time on in a long while (due mainly to my own lack of knowledge and desire to better acquaint myself with firearms in.
Mar 06, 2008 · If you’re really curious: FMJ bullets are made by taking a piece of copper, hollowing it out, and pouring lead into the hollow. CMJ/TMJ bullets are made by taking an already-formed lead bullet and plating it with copper.
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CMJ vs. FMJ If you see CMJ on a box of ammo, that means it has a complete metal jacket. A CMJ is very similar to a total metal jacket and again, these bullets perform the same way an FMJ load would.
Nov 19, 2008 · full metal jacket vs complete metal jacket —–Montana Gold sells 9mm bullets in FMJ with the lead core visible at the base of the bullet, and CMJ with the entire bullet including the base jacketed. What difference does it make? Thanks in advance for any responses. pcctex
In terms of function, TMJ bullets perform nearly identically to FMJ. CMJ vs. FMJ. If you see CMJ on a box of ammo, that means it has a complete metal jacket. A CMJ is very similar to a total metal jacket and again, these bullets perform the same way an FMJ load would. They do not expand upon impact with a target. Why Choose FMJ Bullets?
May 08, 2014 · The difference is more than likely NOT due to CMJ vs FMJ.
If it was equipment related, it would be more likely due a sizing issue with the bullets (reads: barrel to bullet seal) – the jacket (or complete lack thereof – since castlead bullets have no jacket) is irrelevant.
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Apr 05, 2010 · FMJ/CMJ's are pretty much identical to one another except for the little bit of lead exposed at the base which will eventually cause a build up in Open gun comps, but really does almost nothing to the lead that will get into your system (it's almost entirely from the primer).