![Image](https://farm5.staticflickr.com/4847/46006354572_cc37799410_c.jpg)
CCI450s as seated and after failing to go bang fire forming Dashers. When punched out and given a tap with a hammer they fired. I subsequently found that they would eventually go if fired two or three times...
Moderator: Mod
Josh Cox wrote:I am also having troubles with these in my .223, about 1 in ten fails.
Took them home and whacked them with a pin punch, about half of them eventually go off.
Use a different primer type, no misfires.
Matt P wrote:From another forum:
Thomas Gonzalez : A perfect setup on a loaded round ready to fire would be to have no more that 0.001 gap between the shoulder of the loaded round and the shoulder of the chamber. and at least a firing pin with the minimum protrusion, .050 being the minimum and .060 being the max. and an understanding of what max SAAMI spec. primer depth should be to ensure proper ignition. 100% of the people that come to my reloading classes have no idea what SAAMI primer pocket specs are and just arbitrarily cut /uniform primer pockets to whatever depth their purchase tool cuts. Most of you would not consider shooting a firearm with excessive headspace, yet no one worries about excessive primer space. Example: Lets say if you left you primer pockets alone and seated a primer in them and know that was the perfect depth according to SAAMI, and you had a minimum firing pin protrusion of of .050 and only .001 gap at the shoulder of you case. In reality you now have only .049 firing pin fall and now your under what the minimum protrusion spec is! Damn it! Why we hate math right? Now lets say we took this same scenario and cleaned up our primer pockets step back and admire the nice shiny things the have become. Let's say that require .004 to clean them up. Now our minimum firing pin protrusion has become .045, and we wonder why our rifle shoots like ass and why our CCI 450 primers won't go off. It has to be the action makers fault, or time to change my old weak firing pin spring and replace it with a 30 lb. one so it takes a cheater bar to open my bolt when I try to compress it. Nope you may have caused all the issues yourself.
Trevor Rhodes wrote:Matt P wrote:From another forum:
Thomas Gonzalez : A perfect setup on a loaded round ready to fire would be to have no more that 0.001 gap between the shoulder of the loaded round and the shoulder of the chamber. and at least a firing pin with the minimum protrusion, .050 being the minimum and .060 being the max. and an understanding of what max SAAMI spec. primer depth should be to ensure proper ignition. 100% of the people that come to my reloading classes have no idea what SAAMI primer pocket specs are and just arbitrarily cut /uniform primer pockets to whatever depth their purchase tool cuts. Most of you would not consider shooting a firearm with excessive headspace, yet no one worries about excessive primer space. Example: Lets say if you left you primer pockets alone and seated a primer in them and know that was the perfect depth according to SAAMI, and you had a minimum firing pin protrusion of of .050 and only .001 gap at the shoulder of you case. In reality you now have only .049 firing pin fall and now your under what the minimum protrusion spec is! Damn it! Why we hate math right? Now lets say we took this same scenario and cleaned up our primer pockets step back and admire the nice shiny things the have become. Let's say that require .004 to clean them up. Now our minimum firing pin protrusion has become .045, and we wonder why our rifle shoots like ass and why our CCI 450 primers won't go off. It has to be the action makers fault, or time to change my old weak firing pin spring and replace it with a 30 lb. one so it takes a cheater bar to open my bolt when I try to compress it. Nope you may have caused all the issues yourself.
Yes Matt that might be so but l adjust my pocket reamer so the primer is 1'' below the surface noting that it's not that easy to measure.
Matt P wrote:primers.jpg