Well, the aluminum washer idea for the primer seat didn't last a month. The Accura started belching blowback about a week ago, and the Omega started releasing black spent primers 3 days ago. I am thinking they were both working great for maybe 50 shot, and then they failed.

This sent me on to the next step which was suggested by Screwbolts quite some time ago. He suggested drilling out the breech plug, and tapping it to receive a grade 8, 3/8 x 24 bolt, and then use the bolt to make a new primer pocket. This was in response to my writing and showing a picture of flame cutting in the primer seat of my Omega, and Accura breech plug(s).

So, i drilled and tapped the worn Omega X7 breech plug to receive the grade 8 bolt.








Note that i ground the bolt end so that it would have a shape similar to the bottom of the hole made by the letter Q drill. I used 2 taps to make the threads, a normal tap, followed by a bottom tap. I wrapped the bolt with teflon tape, and made it super tight in the breech plug, so it won't unwind someday in the future.








I didn't think it would work so very well to cut the bolt off with a hacksaw, and it only took me 2 swipes, before i could see that was near hopeless. So, i put a cut disc on my 4" grinder, and proceeded to cut the bolt off. Following is a picture of the bolt nearly cut off; it was easy to do.









After the bolt was cut off, i used the cut wheel to sorta smooth the top. Note that one can see the edge of the bolt.









Then i started the flame channel using an 1/8" drill. My set-up didn't work so very well, thus the hole isn't centered.









Then i drilled for the primer pocket using a letter C drill. I wanted this breech plug to have minimum head space, so i was very careful with the depth of the cut, and went real slow here. When it seemed somewhat close, i ground another letter C drill to a flatter point, and used it to get the primer pocket closer and closer to the desired depth.









The breech plug ended up having a head space about 0.011" less than a factory breech plug.








This made for a condition where one can feel the action closing on the primer. One can readily put the rifle into battery, but there is a definite resistance, and it does compress the primer some.

Several primers were popped in the shop to verify this chingadero would work. This morning i went up, and shot 3 rifles at paper. I fired the Omega 3 times, raised the peep, and fired 3 more times. The spent primers are pictured along with a spent primer that was popped before the blow back was 'fixed', and a primer that was popped in the shop. One can see that the dimple made by the firing pin is some off center, which it always is even with a factory breech plug, but not this much.









The paper was near 102 yard, and the load was 105g BH209 pushing a 270g Gold Dot in a crush rib sabot lit by a W209 primer. I should also mention the breech plug has a vent liner installed. The vent liner was supplied by Precision Rifle, and is similar to a Savage vent liner, except it differs by having a 0.033" flash hole, and a larger vent opening that steps down to the flash hole.