Thompson Omega Breech Plug Conversion.

[bucksnort101]

Hello, new to the board today and have already learned a quite a bit.
I have been shooting a Thompson Omegae .50 BP rifle for a few years now and was wondering if anyone has used one the those breech plug conversion kits that allow the use of a .25ACP case and primer instead of the 209 primer. Does it work as advertised? Seems I cannot get rid of the excessive blowback no matter what powder I've used thus far and am looking for ways to clean things up.
I like the though of using the small ammo case as well, much easier to re-prime in cold weather.

[KeithLewis]

I have on in my Omega and it does help eliminate blow back as well as making the installation of the primer easier especially with a scope on the rifle. I have not seen much improvement in accuracy although the crud ring is a little less with 777 when rifle primers are used in place of the old standard 209 primers.

[rlp10ml]

On my Omega I started using the Winchester 777 209 primers.It really is a noticable difference in both the crud ring and the blowback issues when using 777 powder or pellets.

[bucksnort101]

Thanks for the responses. I'm going to try the 777 Primers and some of the new Blackhorn 209 Powder, providing I can find some locally first. Will be less expensive that buying the new breechplug.

[ma]

Jul 31, 2008 15:16:43 GMT -5 bucksnort101 said:

Thanks for the responses. I'm going to try the 777 Primers and some of the new Blackhorn 209 Powder, providing I can find some locally first. Will be less expensive that buying the new breechplug.

If you are going to BH 209 you will need a lot hotter primer than the 777's especially when it gets really cold.

Really needs a true shotgun primer or better yet a magnum primer.