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Post by shane on Jan 18, 2020 23:02:07 GMT -5
I have asked Hank this question and though it I would ask others here as well.
Shooting TC Encore 45 cal Hankins conversion.
I use Hankins bullet press and size my Pitman. 275gr projectiles.
They load pretty firm until the last 1-2”. Then it seems to just drop to the charge.
Why is this happening?
Gun is shooting SUB MOA but it bothers the heck outa me.
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Post by hillbill on Jan 19, 2020 7:39:43 GMT -5
sounds like you could have a bulged barrel? I hope that's not the case.
clean the barrel good and look through it, usually a swell is visually noticeable by a shiny ring.
when did it start doing this?
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Post by shane on Jan 19, 2020 8:51:12 GMT -5
Hey Hill Bill!!!
Honestly is seems it’s always loaded this way. However it’s been 1.5 years since I shot it, until recently.
It shoots great and will still cut holes if I do my part.
No visible external barrel signs. I will check out the intervals today and let you know.
Private message sent ur way about AR 10’s
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Post by buckstuds on Jan 19, 2020 9:11:14 GMT -5
I bulged a barrel one time. Loaded the same way as you are talking. I used calipers on the outside of barrel to confirm my thoughts. Mine was bulged 25 thousand right after the breach plug for 2 inches. I hope this helps and is not what happened to you.
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Post by Richard on Jan 19, 2020 9:16:02 GMT -5
Some barrels are just made that way?
I had a Pacnor that always loaded that way----poor or lack of quality control by the manufacturer! This is why I have stayed with cut rifled barrels from Brux and Krieger. "Uniform from breech to muzzle!". This is what is necessary for a good muzzle loader barrel. You can get away from some muzzle constriction in a center fire barrel but not with sabot-less muzzle loaders.
And yes, had several experiences like "buckstud!"
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Post by outdoors81 on Jan 19, 2020 9:46:26 GMT -5
I have the same problem while loading fury 325gr ST2s, but not so much with 300gr Aeromaxs.... What kind of powder are you using? I have been using H322.
Others may be able to answer this, but does powder leave more residue the closer it gets to the muzzle of the barrel? If it burns the cleanest just off the powder charge than maybe that is why there is a loose spot.
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Post by schunter on Jan 19, 2020 10:06:21 GMT -5
My Kreiger is the same way. Not as noticable on a clean barrel though. I have a Mcgowen that is the exact opposite very tight the last 1-2 inches. With the Mcgowen you have to be very careful to make sure the bullet is firmly seated on the powder and it is harder to get a consistent seating pressure. Both are sub moa guns when the nut behind the butt doesn't jerk the trigger.
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Post by Hank on Jan 19, 2020 11:33:34 GMT -5
I have the same problem while loading fury 325gr ST2s, but not so much with 300gr Aeromaxs.... What kind of powder are you using? I have been using H322. Others may be able to answer this, but does powder leave more residue the closer it gets to the muzzle of the barrel? If it burns the cleanest just off the powder charge than maybe that is why there is a loose spot. The above is what I think is happening.... IMO......Some powders burn cleaner in the breech area and start to leave dirty residue the farther down the barrel it goes. I experience this with my Cyclops gun. On a clean barrel the bullet will push all the way through the barrel with the same resistance but once the rifle has been shot a few times, I must size the bullet smaller to get it to go down the first several inches, as the bullet goes down it gets easier and at the last 3 to 4 inchs it is really easy to seat. Clean the rifle and I am right back where I started from with a good fit from breech to muzzle, therefor, I never clean the barrel. |
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Post by 12ptdroptine on Jan 19, 2020 16:38:49 GMT -5
I have the same problem while loading fury 325gr ST2s, but not so much with 300gr Aeromaxs.... What kind of powder are you using? I have been using H322. Others may be able to answer this, but does powder leave more residue the closer it gets to the muzzle of the barrel? If it burns the cleanest just off the powder charge than maybe that is why there is a loose spot. The above is what I think is happening.... IMO......Some powders burn cleaner in the breech area and start to leave dirty residue the farther down the barrel it goes. I experience this with my Cyclops gun. On a clean barrel the bullet will push all the way through the barrel with the same resistance but once the rifle has been shot a few times, I must size the bullet smaller to get it to go down the first several inches, as the bullet goes down it gets easier and at the last 3 to 4 inchs it is really easy to seat. Clean the rifle and I am right back where I started from with a good fit from breech to muzzle, therefor, I never clean the barrel. I aggree with Jeff, I was scared I had bulged a barrel when the same thing happened. But not on 3 of my barrels. I also believe the most pressure is built in the first 3 inches right off the plug. Creating higher temps...cleaner burn...fouling grows as pressure reduces therfore not burning as clean. And as Jeff said. Clean it good. Use a little JB bore paste. Bullet pushes consistant down the bore Drop |
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Post by Ice on Jan 20, 2020 9:39:03 GMT -5
Thanks Jeff for the insight. I have a Pacnor barrel that seems to have the same issue. It shoots very consistent with a couple of powders/bullets both with sabots and sabotless.
I had shot a ramrod out of it around shot 4 or 5. (Smokeless archery isn’t very smokeless and may not be a legal hunting method in your state.) I began to notice the same issue when I went sabotless and thought that it was just part of my SML education. However, in the learning process, I came to learn that fouling is different at different parts of the barrel.
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