T/C Encore primer blowback???
09-01-2010 | 04:45 PM
#1
Thread Starter
Fork Horn
Joined: Feb 2003
Posts: 470
Likes: 0
From: Iowa
T/C Encore primer blowback???
I'm tired of the mess I get with blowback when shooting my Encore. I wonder about drilling the hole in the breech plug a little larger to solve my problem. It seems the hole in the breech plug in the newer T/C's like the Triumph is much larger. Good idea or bad? Thanks
09-01-2010 | 05:11 PM
#2
Typical Buck
Joined: Dec 2009
Posts: 542
Likes: 0
From: Virginia
Blowback? I got an Encore this past spring and have had it out a couple times. I am amazed at how clean the breachplug is where the primer sits. I also have a Knight Revolution and it gets filthy from the primer.
I wonder why yours would get so dirty if mine doesn't?
I wonder why yours would get so dirty if mine doesn't?
09-02-2010 | 04:56 AM
#8
Nontypical Buck
Joined: Aug 2008
Posts: 3,732
Likes: 0
From: Rapid City, South Dakota
Myself, i have no experience with the Encore, so i have no first hand knowledge of issues of that rifle. What i have done to cure blow back in my rifles is reduce the head space 3 different ways.
The simplest is to use an o-ring. This involves using a drill to make the primer pocket some deeper, so the rifle will go into battery with the o-ring in place. One needs to 'sneak' up on the correct depth. Drill too deep, and there will be no seal, and the innards of the primer will walk out of the cup when fired.
The o-ring pretty much seals the area at the base of the primer, when it is compressed, and is good for 25 or so shots. This works.
Another thing i have done, was suggested by Screwbolts, when he pointed out that my breech plug had flame cutting in the primer seat. This involves drilling and tapping the breech plug to receive a 3/8 x 24 grade 8 bolt.
One can then make the primer pocket less deep so that when the rifle is put into battery, the primer is crushed ever so little. This creates a 'seal', and has reduced blow back to zero in one of my Omega.
In my Accura what i did was make a breech plug from a grade 8 bolt, and by making the head space some less than factory, was able to reduce blow back to near zero.
The CVA breech plug is on the left. The length of the home made breech plug with the primer in place is about 0.020" longer than than the length of the CVA breech plug with the primer in place. This results in a crush fit when the rifle is closed, and hence reduces blow back.
The simplest is to use an o-ring. This involves using a drill to make the primer pocket some deeper, so the rifle will go into battery with the o-ring in place. One needs to 'sneak' up on the correct depth. Drill too deep, and there will be no seal, and the innards of the primer will walk out of the cup when fired.
The o-ring pretty much seals the area at the base of the primer, when it is compressed, and is good for 25 or so shots. This works.
Another thing i have done, was suggested by Screwbolts, when he pointed out that my breech plug had flame cutting in the primer seat. This involves drilling and tapping the breech plug to receive a 3/8 x 24 grade 8 bolt.
One can then make the primer pocket less deep so that when the rifle is put into battery, the primer is crushed ever so little. This creates a 'seal', and has reduced blow back to zero in one of my Omega.
In my Accura what i did was make a breech plug from a grade 8 bolt, and by making the head space some less than factory, was able to reduce blow back to near zero.
The CVA breech plug is on the left. The length of the home made breech plug with the primer in place is about 0.020" longer than than the length of the CVA breech plug with the primer in place. This results in a crush fit when the rifle is closed, and hence reduces blow back.
