FG/MD54
I shoot these damn guns more than enough to know what the hell they like. CCI 209M primers and give it 5 seconds on a damn #65 drill bit. You dont need to pay lehigh for vent liners.
You dont need to do that crap to a breech plug!
Hell i am seeing more tc owners over on another site with their omega's failing to fire with the federal 209a and winchester primers.
Use a #32 drill bit on the cva plug to keep the carbon build up out and use cci 209m primers. And if needed, drill out the flash hole with a #65 drill bit.
But that is exactly the point if your breech is built correctly you leave all those drill bits at home - you do not need them.
Last week shooting a Knight with a Lehigh conversion and a $4.00 vent liner - i shot 31 shots down range using 120 grain loads of BH - never cleaned anything - was not necessary.
If your CVA plug were built correctly you could do the same. I would venture that
ronlaughlin might tell you the same with his modifications of the CVA plug.
With the modifications you do not need to use the hottest primers. Try to understand, and i know that is difficult, what
badbowbender2 is trying to explain about the volume of gas and debris that the hottest primers expel.
Here just in case you failed to read... but he really does know what he is talking about.
"Hotter" is a term many throw around, and doesn't necessarily mean what it says. Some 209 primers will reach higher actual temperatures than others, but may not reach the actual pressures of other primers with lower temperatures, and vice-versa. So, "hotter" is not well defined here, but I have shot much more BH209 than the average guy, and know that the Federal 209A and CCI 209M are the top two for igniting this powder in MOST applications.
Now with the relatively small channel (3mm) in the CVA rifles, they can not handle the volume of pressure like a 1/8", or better yet 5/32" channel can. If that pressure cannot bleed through the flash hole, it is either going to come back through the primer or pocket. A non-magnum, lower pressure primer may and generally do work better for the lower volume channels.
If you make the modifications to the CVA plug - you can leave your drill bits at home - you will not even need the CCI-209M or any any other hot primer to get BH to work. Call Don at Western and verify that most BP even closed BP's were not built to handle BH. They were built to reduce blow back... so flash channels and flash holes were reduced.