Originally Posted by
Gm54-120
It has nothing to do with mag on non mag. I don't like the regular CCIs either. They come out dirty. When a primer comes out dirty its brutally obvious all the energy from the primer is NOT going to the powder.
Its called head space (for lack of a better term) and the Win209 simply fits better and has been 100% reliable for me in no less than 12 bottle of BH209 and roughly 7 DISC based NFPJ based Knight rifles.
I cant see any reason to use a mag primer in a Knight/Lehigh NFPJ plug unless they fit better than a Win209 which to this day i havent seen one that does.
My ULA is just the opposite, it uses CCIs. Either the mag or non mag. A Win209 is just too long to close the bolt. There is really nothing "special" about it as you preferred to call it. They are just designed using a different primer.
Lehigh probably chose to use the Win209 just because it was the longest and you would have the least amount of problems if a primer was on the long side. Crushing a primer too far could even be hazardous.
Im very surprised someone who has been around on the forums so long needs this level of explanation considering its been gone over at length numerous times.
I'm not disagreeing at all with primer length and/or crushed primers. I am though disagreeing with some of your comments about
"no differences". If one reviews the in depth research others have done and the primer manufacturers, its clear the magnum primers are hotter and have more pressure than a WIN209.
The magnum primers burn hotter, ignite the propellant faster and at a much faster rate than the WIN209. In "most" cases, this means better ignition with more consistency. Every test shows that. Thus the reason Western recommends either the F209A or C209M primers. The pressure variations are more consistent with lower standard deviations with magnum primers. Others who have tested standard to magnum primers point out there could be deviation of between 20 to 40 milliseconds delay with standard primers, where magnum primers reduce that delay and "smooth them out". It is also pointed out in many tests,
including Federal's, that magnum primers are also more reliable in very cold weather and humid conditions.
Someplace, I thought I had an independent lab's testing of the different primers that showed the exact pressures and temps of each of the major primer brands. IF I can find that lab test, I'll post it. As I remember the test results, they coincide with all the other testing done by manufacturers of primers and those of other independent tests.
The data provided by Western and other independent lab testing all say the same identical thing, providing the same information. The magnum primers are more consistent, more reliable when it comes to temperature variations and humidity and have lower standard deviations in pressures. That said, I'm not saying that a WIN209 will not ignite BH209. I'm not saying that they won't work in a specific owners rifle or rifles.
However if a shooter wants to eliminate some of the contributing factors, I agree with the experts in the field. Use the magnum primers.
"
Im very surprised someone who has been around on the forums so long needs this level of explanation considering its been gone over at length numerous times."..................... I've pointed out my reasoning, I think pretty clearly, having used the data provided by the manufacturers, labs and in independent primer testing.