Join Date: Jul 2010
Location: Boncarbo, Colorado
Once the Bushing is out, Go and clean it free of any grease / debris. Follow up by cutting a 1" long piece of White Teflon "Plumbers" Tape. You will then need to wrap the threads of the Firing Pin bushing with this Tape as it will give it a tighter hold while installed. Once taped, reinstall Firing Pin - Spring and Bushing. Snug up the bushing and then back it off just a touch.
Now this is the part that gets tricky! We need to take a look at the primer you will mainly be using. Primers come in all kinds of lengths. The set up i use is both the CCI 209M primers and Winchester W209 primers. Federal 209A primers are also close in length to the other Two. The CCI 209M primers are the shortest of the "hot" primers. With these primers you will need use your feeler gauge and pull out anywhere from the .014 all the way up to .016" thickness gauge.
Shorter Primers such as the cooler Winchester 777 primers, Remington Kleanbore Primers,CCI Inline MZL primers may work best with the .016 as these primers are shorter. These Three primers are the Nastiest primers to use on a factory CVA rifle as the mess they leave behind is just terrible from all the blow by.
Now to skip back a bit, I want to show you what a factory CVA Accura looks like after shooting the CCI 209m primers and the firing pin screwed in all of the way.
On the left side we have CCI 209M primers fired in a factory set up CVA Accura. You can see that one half is pitch black and the other side is fairly clean. Why is this? My only guess is that when the rifle is fired, the primer blows back due to the gap between the firing pin bushing and primer, Once the primer hits the bushing, the pressure then puts force onto the primer and cocks it at an angle therefore leaving us one one filthy side and one clean side.
Now the Silver color primers on the left are Winchester W209 primers fired from the a CVA Accura after its firing pin was adjusted .016" out. Super clean and a simple Q tip at the end of the day to clean up inside the frame.
Now getting back to what needs to be done for a spotless CVA Break action Muzzleloader. I shoot mainly Blackhorn209 with the CCI 209M primers. So for this set up, i will use the .016" feeler gauge and grabbing my screw driver, back the firing pin bushing out until its level with the .016" feel gauge. Once that's done, i will re-install the barrel.
Making SURE that there is no Charge in the barrel, install your primer into the breech plug and just gently close it. DO NOT SLAM IT! If adjusted correctly, there should be about a .008" gap between the frame and the Quick Release Breech plug. If you shoot a Pre-2010 you'll see the gap quite a bit easier.
Once you see this gap, burn it into memory. After that, break the action open again and then time, give it a good solid slam shut. Doing this will cause a "Crush" fit of the primer for basically a 100% blow back free Primer to Frame fit. You will no longer have a mess to clean, you will now get Consistent pressure into your main charge.
If you are using the Shorter primers mentioned earlier, just experiment and make adjustments as you see fit until its completely blow by free.
My brother in laws Wolf only needed the Firing Pin bushing backed out about .006" for a good tight seal up on the primer. Not all muzzleloaders will use the same adjustment so just have some patience and play around until you find the perfect Primer/Firing pin bushing adjustment.
This would even work on any other brand of muzzle loader that uses the same firing pin bushing set up like the CVA.
This mainly is to keep the action clean but in the same time, you're now going to be getting consistent heat-gasses to the powder which helps increase your accuracy. After doing this mod, ive had some of my best shooting i have EVER done.
Last edited by frontiergander; 03-01-2011 at 07:00 PM.