Omega Headspace Issues
03-03-2011, 12:41 PM
#1
Nontypical Buck
Thread Starter
Join Date: Aug 2008
Location: Rapid City, South Dakota
Posts: 3,732
Omega Headspace Issues
The scoped X7 using OEM breech plug has a snug headspace. One can use CCI, CCIm, Federal 209A, and W209 primer, and the spent primer is either near the same length as the unfired primer, or shorter. Of course, bein' it uses the hex head TC breech plug, it never fails to ignite BH. This rifle is the only rifle i own, that uses an unmodified breech plug
The factory sighted X7 has a looser headspace when using the OEM breech plug. In this rifle, W209 primer grow a couple of thousandths, and shorter primers allow quite a bit of blow by. Even though this rifle's headspace was near perfect for using W209 primer, i just couldn't let it be.
The technique of tapping the plug to receive a grade 8 3/8" bolt, was shown to me by Screwbolts. This breech plug is now sized so that it gives a slight crush to the STS primer when used in the peep sighted rifle. Seems, it won't work in the scope sighted rifle, but i haven't tried it to see.
Both breech plugs are showing erosion of their flash holes i.e. the flash hole diameter is now about 0.031". When new they were about 0.029". One day it will be time to install a vent liner in each plug using the technique explained by sabotloader on these forum
03-03-2011, 02:47 PM
#3
Boone & Crockett
Join Date: Aug 2004
Location: Idaho
Posts: 11,703
ronlaughlin
Of all the things you have done, I really find this one quite an interesting inovation.
Question, have you maded the insert adjustable to gun to gun in the series?
Once you have the inset set for the gun and the primer how does it stay in place or will it even move?
Very interesting method and in my little world much better than taking the chance of screwing the firing pin bushing out and off it's seat to accomplish this task.
mike
Of all the things you have done, I really find this one quite an interesting inovation.
Question, have you maded the insert adjustable to gun to gun in the series?
Once you have the inset set for the gun and the primer how does it stay in place or will it even move?
Very interesting method and in my little world much better than taking the chance of screwing the firing pin bushing out and off it's seat to accomplish this task.
mike
03-03-2011, 02:59 PM
#5
Boone & Crockett
Join Date: Aug 2004
Location: Idaho
Posts: 11,703
03-03-2011, 03:06 PM
#6
Banned
Join Date: Dec 2008
Location: Boncarbo,Colorado
Posts: 9,186
its a lot of work and time consuming. Does the Omega have a firing pin bushing? If it did, its be a lot easier to do like Bellm does for The Encores with .001 - .005" Shims. The shims would work on the CVA Line up as well.
03-03-2011, 03:06 PM
#7
Fork Horn
Join Date: Dec 2005
Location: My Range in Central NY
Posts: 320
Ron: great work as always!
MD54: you break me up man!
Sabotloader: I am not Ron, but if I may, no he didn't make it adjustable without a lathe/mill :-) That red lock tight is considered permanent. He fit the stud, then turned/cut precisely to length then milled/bored the primer pocket to the exact measurement he needed.
Ken
MD54: you break me up man!
Sabotloader: I am not Ron, but if I may, no he didn't make it adjustable without a lathe/mill :-) That red lock tight is considered permanent. He fit the stud, then turned/cut precisely to length then milled/bored the primer pocket to the exact measurement he needed.
Ken
03-03-2011, 03:14 PM
#9
Nontypical Buck
Join Date: Apr 2009
Location: VA
Posts: 1,120
The scoped X7 using OEM breech plug has a snug headspace. One can use CCI, CCIm, Federal 209A, and W209 primer, and the spent primer is either near the same length as the unfired primer, or shorter. Of course, bein' it uses the hex head TC breech plug, it never fails to ignite BH. This rifle is the only rifle i own, that uses an unmodified breech plug
The factory sighted X7 has a looser headspace when using the OEM breech plug. In this rifle, W209 primer grow a couple of thousandths, and shorter primers allow quite a bit of blow by. Even though this rifle's headspace was near perfect for using W209 primer, i just couldn't let it be.
The technique of tapping the plug to receive a grade 8 3/8" bolt, was shown to me by Screwbolts. This breech plug is now sized so that it gives a slight crush to the STS primer when used in the peep sighted rifle. Seems, it won't work in the scope sighted rifle, but i haven't tried it to see.
forum
03-03-2011, 03:22 PM
#10
Fork Horn
Join Date: Dec 2005
Location: My Range in Central NY
Posts: 320
hubb11/Steve,
I am not Ron, but what he is actually showing you I believe is 2 (two) different rifles, one being scope sighted and the other is equipped with peeps. Two separate guns that have similar stocks but please take notice of the laminate wood patterns of each, they are different.
Sorry Ron, couldn't help myself.
I am not Ron, but what he is actually showing you I believe is 2 (two) different rifles, one being scope sighted and the other is equipped with peeps. Two separate guns that have similar stocks but please take notice of the laminate wood patterns of each, they are different.
Sorry Ron, couldn't help myself.
Last edited by Screwbolts; 03-03-2011 at 03:24 PM. Reason: spelly is there anything else :-)