Home Forums Hunting & Shooting Muzzleloaders Blackhorn 209 failure to fire in cold weather?

Well you said that you "assumed" the breech area would be .502" or .5015". Did you measure that Maxi-ball that was started from the breech? Was it actually smaller?

It could be roughness, fouling or as you say, a narrower bore. I'd try cleaning the living snot out of that area and see if it gets closer to the average of the rest of the barrel.

Perhaps I should do a similar test just to see if mine are that way.

No I didn't even bother measuring the one from the breech as it fell out of the end of the bore when I tipped it up to get a better handle on the rod. I figured it would anyway by the way it felt.

Now it could be some fouling, but I can't see anything! I am going to try measuing my CVA tonight as I'm not busy and I'm interested if it is the same way. I'll also try to scrub up the breech areas just in case there might be some build up there and I'll also re-measure the KP1.

For whatever the reason, it's definatly narrower.

Last update for this thread.

I measured my CVA Elkhorn Pro .50 cal with a blued Bergara barrel and it came out at .5030 and it was the same all the way up the barrel.