Hello all,
fairly new to the forum, been lurking and learning for a bit and just thought i would post up to see what your opinions are and/or if any of you have ever seen this before.
I built a 6X45 on an older m77 MKII action a few months ago using a SS, #2, 1:8 barrel. These barrels are fairly inexpensive and this is not intended to be a bench rifle. I am a machinist/mechanic that has been building barrels in the rimfire world for many years and finally stepped into centerfire.
Anyways, this is one of three barrels from same manufacture that i have built in last few months.
It has 110 rounds down the tube now and i have been real anal about cleaning and breaking in slowly. Accuracy has not been stellar (honest 1" @ 100 with pretty much any load i have tried) and will have no problem taking a deer at 200 and in. But, if i am going to take the time and effort to build things, i just expect more. My main issue is that this barrel is a nightmare to clean. after shooting as little as 10 shots it typically takes me a couple nights (using wipeout) to get clean patches indicating that copper is gone.
So, i finally picked up a borescope so i can see what is going on inside this and many of the rifles i shoot.
I was unpleasantly surprised to see what is going on in this particular barrel.
There is one land that keeps fouling, which starts at about 6" from throat and stops around 2" from muzzle. Once getting all the copper dissolved it looks to me that there is actual gualing present on this land which is tearing copper off the bullet.
I do not know a lot about the button rifling process but i am guessing that this is not normal..
Any suggestions or ideas on what would cause this or if there are any magic remedies are greatly appreciated.
At this point i am thinking that the barrel just needs to be replaced or just accept the way it shoots and stop cleaning it all together.
fairly new to the forum, been lurking and learning for a bit and just thought i would post up to see what your opinions are and/or if any of you have ever seen this before.
I built a 6X45 on an older m77 MKII action a few months ago using a SS, #2, 1:8 barrel. These barrels are fairly inexpensive and this is not intended to be a bench rifle. I am a machinist/mechanic that has been building barrels in the rimfire world for many years and finally stepped into centerfire.
Anyways, this is one of three barrels from same manufacture that i have built in last few months.
It has 110 rounds down the tube now and i have been real anal about cleaning and breaking in slowly. Accuracy has not been stellar (honest 1" @ 100 with pretty much any load i have tried) and will have no problem taking a deer at 200 and in. But, if i am going to take the time and effort to build things, i just expect more. My main issue is that this barrel is a nightmare to clean. after shooting as little as 10 shots it typically takes me a couple nights (using wipeout) to get clean patches indicating that copper is gone.
So, i finally picked up a borescope so i can see what is going on inside this and many of the rifles i shoot.
I was unpleasantly surprised to see what is going on in this particular barrel.
There is one land that keeps fouling, which starts at about 6" from throat and stops around 2" from muzzle. Once getting all the copper dissolved it looks to me that there is actual gualing present on this land which is tearing copper off the bullet.
I do not know a lot about the button rifling process but i am guessing that this is not normal..
Any suggestions or ideas on what would cause this or if there are any magic remedies are greatly appreciated.
At this point i am thinking that the barrel just needs to be replaced or just accept the way it shoots and stop cleaning it all together.
lol
