Inline Breech Plug (Duh!)

[Steve S.]

Owned a T/C Pro Hunter for about 12 years now; killed several deer with it, reliable, accurate, all that stuff. I have always kept it pristine clean with (hindsight now) one exception - cleaning the breech plug canal. I noticed increased blowback and my groups began to open up over time. Since Google knows all, I did some research on possible causes - it then slapped me in the face - I realized that my plug canal was almost completely closed with carbon - shame on me big time! I then cleaned the canal as recommended and as if magic, rifle was back on track. Amazing things happen with routine maintenance/ life is simple when the light bulb illuminates.

 

[Bfh_auto]

On the other side, don't use a torch tip cleaner. I work with someone who did that. He was struggling to shoot it because it was blowing primers apart. The flash hole was egg shaped.

 

[Ks5shooter]

Cleaning the breach plug can be a pain in the butt ,but very important. Good catch no more wondering
I have one of these in my older T/C inline and have yet to find an easy method.

 

[4v50 Gary]

Yep, inlines need just as much care as a regular smokepole. Clean the breechplug and scrub that plastic out of the bore. At Whittington Center, we were removing sheets of plastic out of a few of them (great maintenance, right?).

 

[Snidely70431]

I was experimenting with using loose powder in my CVA Optima Pro Magnum, which recommends 3 x 50 grain pellets,

and I altered it by drilling out the bore end of the breech plug to about 3/8" wide by about 3/4" deep

(This is actually a Knight breech Plug, but conveys the idea)
I got more reliable ignition but the 209 primers tended to be hard to extract; the smallest restriction in the unaltered breech plug is at the bore end.


I drilled a pilot hole about 1/4 " deep in the bottom of the bore end of the breech plug with a #29 (.3160") drill bit, tapped this with a #8-32 tap and fitted this with a #8-32 x3/16 stainless steel set screw. I then drilled a.023" hole through the set screw with a Dremel tool. I have not had any problems since.

 

[Snidely70431]

I was experimenting with using loose powder in my CVA Optima Pro Magnum, which recommends 3 x 50 grain pellets,
View attachment 806772
and I altered it by drilling out the bore end of the breech plug to about 3/8" wide by about 3/4" deep
View attachment 806774
(This is actually a Knight breech Plug, but conveys the idea)
I got more reliable ignition but the 209 primers tended to be hard to extract; the smallest restriction in the unaltered breech plug is at the bore end.


I drilled a pilot hole about 1/4 " deep in the bottom of the bore end of the breech plug with a #29 (.3160") drill bit, tapped this with a #8-32 tap and fitted this with a #8-32 x3/16 stainless steel set screw. I then drilled a.023" hole through the set screw with a Dremel tool. I have not had any problems since.

The diameter of the hole at the muzzle end is 5/16, not 3/8. .3125, and it is beveled out, not straight.