Breaches

[thunderhawk1828]

This is most likely the "dumb question" of the week, but what types of breaches are there? I was reading about lubing the barrel in a post and it was mentioned that if you have a patent breach you may need a patch to reach the breach??

I have a GPR (and I believe its a patent breach) and I clean it "normally" - never thought that there would be different types of breaches?? Do i need to clean it differently to be sure I get all of the barrell (and breach) clean and oiled? Never thought i had a problem in cleaning before??

Thanks.

 

[Slamfire]

If your ramrod with jag and cleaning patch reach the bottom of the bore, and comes back out again intact, chances are you don't have a patent breach. If there was a firing chamber down there that was large enough to accept the patch, it, being smaller than the bore, would likely stick the patch on the way back out. :results:

 

[Old Charlie]

If you have a GPR you have a patent breech. If you look down the barrel with a light you will see that there is a hole smaller than the bore going back into the breech plug. I think it is suppose to improve ignition.
I use a 9mm bore brush to get back in there to clean it. It may help the ignition but is a pain to clean. It seems most production guns have them these days.
Old Charlie

 

[thunderhawk1828]

Thanks - I will add that step to my cleaning. Appreciate you adding to my knowlege. :thumbsup:

 

[Tahquamenon]

When cleaning and the nipple removed, I always fish in the flash channel with at pipe cleaner soaked with solvent.

After everything is clean I fish a pipe cleaner in there again with lube.

Before shooting, I clean the flash channel with another pipe cleaner soaked with alcohol to remove the lube.

:m2c:

 

[CoyoteJoe]

Patten breeches are the main reason I still like the old bucket of soapy water cleaning. It is a bit of bother but is the only way I know to really clean and flush out the powder chamber and flash channel connecting the chamber to the nipple seat.
On your GPR that flash channel is probably about 1/8" and if there is a layer of caked fouling all around that you have a very tiny passage remaining.
On my own Lyman Trade Rifle I redrilled and taped the clean out screw to 10x32 and installed a hardened roundhead slotted screw for easy removal. Lots of folks say forget the clean-out, never remove it, but I find it helpfull to pull out that screw and run a pipe cleaner through it at the range whenever I suspect that ignition is becoming marginal.
I really prefer a flat faced breech plug with drum & nipple but with a good clean-out screw there also. Be sure to shorten any clean-out screw so that it doesn't bottom out on the nipple and keep it coated with anti-seize grease.
:m2c:

 

[thunderhawk1828]

good idea to use the pipecleaner. Thanks.