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Larger Flash Hole
- Thread starter bummy
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Phil Coffins
69 Cal.
Yes, and less accurate.
Why do you ask? What kind of ignition problems are you having? There might be another and better solution if you're more specific about why you ask.
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Never heard that before. Respectively, why would such a insignificant larger TH make the gun less accurate? I would agree that velocity and foot pounds of energy will lower using an equal volume of BP. Not saying you are wrong just don't see the relevance.
Larry
Get a numbered drill set. You can go up to a .0630 or .0670 first. I have had good luck with the .0630. Just a little larger but it helps. Also make sure the breech isn’t caked with fouling.
I bought a Invest Arms Hawken style rifle .50 CAL. new from Dixie Gun Works. I had reliability problems with ignition. I've tried every thing that I know, my club members know, our forum knows and YouTube knows.Why do you ask? What kind of ignition problems are you having? There might be another and better solution if you're more specific about why you ask.
new English flints, tried both bevel and bevel down
.062 flash hole dia. in the sunset position
4f powder in the flash pan (Goex)
50 gr. 3f main charge (Goex)
.490 RB
.018 thick pre lubed patch
flash pan powder towards the outside and inside of flash pan
tapped on barrel to make sure powder is in the patent breech
picked flash before each shot
Sometimes I get flash in the pan but no main charge
Sometimes it goes off okay
Sometimes hang fire
Tough to shoot when it's like this
Bought a new L&R lock, didn't work any better
I'm so frustrated that I'm thinking of buying a Kibler Woods Runner with hopes of better reliability.
PLEASE HELP!!
Why do you ask? What kind of ignition problems are you having? There might be another and better solution if you're more specific about why you ask.
Well, that will definitely solve your ignition problem, no doubts here whatsover, though rather a drastic and expensive and time-consuming solution to the immediate problem.
Fix this rifle first .... THEN .... get yourself a Kibler!!
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You're sure your breech face and flash channel are clean? Some of these repro firearms with their "patent" breeches and/or long or angled flash channels can be problematic, and a simple flash hole pick and "square" breech scraper won't remedy. See @EC121 post above.
You should be able to easily see the breech face shining back at you and the flash hole channel where it meets the breech with a simple pencil-type flashlight, if it's bright enough and the beam concentrated enough. Or you could go all out and get yourself a Teslong borescope off Amazon that pairs to your phone or your iPad.
Searching forum will bring up posts of how people deal with cleaning patent breeches.
Good luck.
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I clean it with hot soap and water with the liner out then I oil it for a one-month storage until our next club shoot. Before I shoot it, I clean the barrel and patent breach with rubbing alcohol and blow it dry with compressed air. The touch hole liner threads straight into the patent breach and appears to be clean.
You're sure your breech face and flash channel are clean? Some of these repro firearms with their "patent" breeches and/or long or angled flash channels can be problematic, and a simple flash hole pick and "square" breech scraper won't remedy. See @EC121 post above.
You should be able to easily see the breech face shining back at you and the flash hole channel where it meets the breech with a simple pencil-type flashlight, if it's bright enough and the beam concentrated enough. Or you could go all out and get yourself a Teslong borescope off Amazon that pairs to your phone or your iPad.
Searching forum will bring up posts of how people deal with cleaning patent breeches.
Good luck.
I will check the breach. Thanks.
If there's residual oil in there rubbing alcohol won't remove it. Just a thought .....
ronaldrothb49
45 Cal.
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did you already drill out the touch hole to .625 or are you using the stock liner thinking it is .625? I recently worked on an Investarms Hawken that had problems with ignition plus other problems. The stock liner the hole was a lot smaller Drilled it out to 1/16" and goes off every time now.
When your rifle is loaded do you see or feel the powder (with a vent pick) inside the flash hole?
I was just reading up on this subject yesterday. There's a good thread HERE on this forum.
I also found THIS ARTICLE discussing the tests done to determine sizing. It seems 1/16" is plenty adequate if one gives the exterior a slight countersink to flare out the opening. Anything above 5/64" caused an increase of the charge blowing out with corresponding loss of power.
I also found THIS ARTICLE discussing the tests done to determine sizing. It seems 1/16" is plenty adequate if one gives the exterior a slight countersink to flare out the opening. Anything above 5/64" caused an increase of the charge blowing out with corresponding loss of power.
Ahhhh .... I'll bet that answers the question posed in post #2 about effect on accuracy.
Yeah I use a cone dremil tool with a cone cutter. It flares it out some. Very reliable.
