Accura with new Breech Plug

[MountainDevil54]

Got a replacement from Ron, which was totally unexpected. The threads on it looks amazing, screwed in like it was a stick of butter " very smooth and slick"

Not sure what to do at this point other than drill it a bit deeper and O ring it. The head space needs adjustment on my Rifle and the O ring is the only way to do it and have the primer fit correct.

80gr 3f American Pioneer, 300gr Thor " didnt like that charge at all" Winchester W209.

First shot the primer was stuck solid,


Left to right: Shot 1 - 2- 3- 4 How the heck are shots 2 and 3 so clean yet 1 and 4 " both were stuck' so filthy?


Switched to the CCI 209M primers which are a bit shorter than the W209s.
First shot,



3 primers, Note that One side is cleaner than a bell, the other is pitch black. Primer rocking back at a co cked angle when fired??

[cayugad]

You guys and your rifles... just like kids with new toys..

I have no idea what would be causing that. All I worry about is when I pull the trigger whether the rifle fires or not. After that the rest is just cleaning.

Good luck with your project.

Also does the SS Optima .. is that the Bergara barrel. I see it is fluted. It was at Cabela's and it has the quick release breech plug that I am guessing does fine with Pyrodex RS. Not that I need another rifle, but I always wanted one of them.

[MountainDevil54]

The Optima is made at the Bergara factory but they skip the multi honing process that the Bergara's get. It helps keep the price down. I think with 200 passes of JB Bore paste, the Optima's barrel would look just like a true Bergara. I did that with mine before i ultra coated it. Smooth as butter and hurts your eyes when you look down the bore into a small light.

[cayugad]

Well I see they have one for a fair price, and I have some Cabela's points and now with free shipping.. it might be time. Although I really keep telling myself I do not need another rifle. But an Optima might be fun. Will that shoot BlackHorn 209?

[MountainDevil54]

might need to give it a .035" flash hole like mine, but yes it will shoot it.

[ronlaughlin]

Myself, i don't know much about problems with breech plug. I don't have any. If i were to hazard a guess, i would suggest that the blackening, and sticking of the W209 may be a reaction between the cutting oil, and the primer-powder. The soot on the CCI primer is because of the same thing, plus the fact that they are shorter, and don't seal as tightly. The reason the soot is on one side is because the CCI isn't snug, and the seat isn't perfect i.e. it probably varies from side to side by 0.001" or 0.002" or thereabouts. The blow by will seek the easiest path.

It appears the W209 are going to work good and will be fairly clean; who knows.

The OAL of this plug and primer is so very close to what it would be with a CVA breech plug, like within 0.003" or so. One shouldn't expect to get zero blow by using this plug. The only advantage this plug has over an OEM plug, is it will reliably ignite BH.

The first plug, was made to be matched with the correct primer, to get zero blow by.

[MountainDevil54]

Ahhhh! I'll take the plug and wash it off with some gun scrubber.

I have to go to town tomorrow so i am going to pick up some tiny washers and file fit for a tighter primer fit.

I'll see how that goes.

[ronlaughlin]

Originally Posted by MountainDevil54

.....................I have to go to town tomorrow so i am going to pick up some tiny washers and file fit for a tighter primer fit.

I'll see how that goes.

Here comes some unsolicited advice.

The W209 will have some blow by, but not too much, and if you give them a chance, you may be satisfied.

Inserting washers in the primer pocket is a gunny sack fix, plus it will almost surely result in an OAL that is much too long. Here is how i see it. It is my understanding that presently, the OAL with the W209 is 1.300". A 'thin' washer when installed into the primer pocket will result in an OAL of approximately 1.330". You won't be able to put the rifle into battery with this OAL.

If you use the CCIm primer, and the 'thin' washer, the OAL will be near 1.325", which is still much much too long for your rifle, and probably every CVA ever made.

I guess you are planning to drill the primer pocket deeper. Be fore warned..................it is quite easy to get it too deep, and then you will have to use 2 washer, but don't drill it too deep again, because then...................................

The W209 will have some blow by in the plug as is, but not too much, and if you give them a chance, you may be satisfied.

I don't have the breech plug you sent back here in my possession, so i can't measure it's OAL with W209 in place, but from memory, i am guessing it is near 1.309". It is my understanding that this was too long for your rifle. So, you see, 1.330" OAL is a way way too much for your rifle. What you need, is for me to send the first plug back to you, but i can't, because i don't have it. Using that plug you may have gotten zero blow by with the CCI primer.

Now that you know the size of your rifle, you can have a plug custom made for the primer of your choice. I believe an OAL with the CCIm primer in place, of about 1.305", could result in zero blow by around the primer.

The plug in my Accura, has been sized to give zero blow by, using the STS.

The W209 may have some blow by in the plug you now have, but not too much, and if you give them a chance, you may be satisfied.

[MountainDevil54]

no i actually plan on filing the washer down thinner. It will be hard work but i'd rather mod the washer over the plug.

[ronlaughlin]

Originally Posted by MountainDevil54

no i actually plan on filing the washer down thinner. It will be hard work but i'd rather mod the washer over the plug.

You will need to make a washer near 1/128" thick. That is 1/4 of a 32nd. Maybe you can poke a hole in piece of aluminum foil.