# The CCI #41, #450 - the Villains I Seek The cups from these primers primers may have caused more ftf (failure to fires) than any other issue with primer reloading. The #450 and the #41 share the same thick cup (0.025) but are different colors:      The alloy of the cup is harder than that of the other primers (sp, sr, spm) The #450 contains a [[Image CCI Universal|universal CCI anvil]] within a chrome colored cup. The #41 contains "dwarf" anvil in a (unfortunately) brass colored cup.     The "short" anvil was a added as a second safety feature built into the #41 primer. Because my favorite round is the 223/556 - I reload and shoot this ammo the most - so I seek, reload, and recycle this primer/brass the most frequently. But I am very careful to never mix-up these primer cups (and the "dwarf" anvils) with any other primer types  - Ever! I can almost guarantee your ftf will skyrocket to 50% merely by using the wrong cup/anvil.   How do I know?   I tried it with commercial primers in a "Baby" Glock 26. /_resources/The_CCI_41,_450_-_the_Villains_I_Seek.resources/image.png) [Homemade primers EPM 8 vs Commercial Primers Test.](https://rumble.com/vkrbwv-homemade-primers-epm-8-vs-commecial-primers-test..html) The Dwarf Anvil is considerably shorter. /_resources/The_CCI_41,_450_-_the_Villains_I_Seek.resources/cci%20and%20dwarf%20side%20by%20side.png) /_resources/The_CCI_41,_450_-_the_Villains_I_Seek.resources/profile%20cci%20virgin%20vs%20fired%2002.png) * * * **A new #41** /_resources/The_CCI_41,_450_-_the_Villains_I_Seek.resources/image.1.png) * * * #41's (I see a few misidentified ones!)  I know the thick cup causes most of the failures - but the short anvil may be responsible for many of the failures too. If  you inadvertantly use the wrong 41/450 cup and a dwarf anvil in tandem, reload  a 380 acp and use this ammo in a pea shooter - I don't give the primer/bullet much chance for success. The CCI 450: /_resources/The_CCI_41,_450_-_the_Villains_I_Seek.resources/image.2.png) has a "chrome" or nickle plated cup (like the #41/thickness 0.025)  and the same powder as the #41. [[Number 41 CCI Dwarf Image]]