el matador
Well-Known Member
- Joined
- Jul 30, 2008
- Messages
- 647
Do you trim your brass? How much neck clearance do you have? Could be carbon buildup around the neck or brass getting too long for the chamber.
Reducing loads and still overpressure
- Thread starter shawnb
- Start date
Help Support Long Range Hunting Forum
Lots of great responses guys. I have cleaned the crap out of this barrel right down to steel. My reduced load is still baging steel with the same inputs ive used for the higher charge weight out to passed 1000. So ill just take it i guess and save myself 2 grains of N570 on each shot!
I really ca
I really ca
wildcat455
Well-Known Member
Shawnb, I see you have resigned to shooting at a lower charge weight. Also see you've cleaned your barrel down to bare steel.
Now how about that chamber?
if you're using a bore guide during cleaning, you may not be getting the carbon buildup in the neck area off. If/when carbon builds up in this area sufficiently, the brass neck doesn't expand sufficiently to release the bullet. Higher pressures result.
Take a bore mop on a short (about 12") section of that crappy piece together cleaning rod, pour some Boretech C4 carbon remover on it, insert it snugly in chamber, twist and work back and forth then remove and look for black. If it's there, you'll know.
Takes a while for it to build up in this area because not much gasses leak back between the case neck and chamber before the neck brass seals it off.
Making sure your brass is properly trimmed is another good suggestion.
Now how about that chamber?
if you're using a bore guide during cleaning, you may not be getting the carbon buildup in the neck area off. If/when carbon builds up in this area sufficiently, the brass neck doesn't expand sufficiently to release the bullet. Higher pressures result.
Take a bore mop on a short (about 12") section of that crappy piece together cleaning rod, pour some Boretech C4 carbon remover on it, insert it snugly in chamber, twist and work back and forth then remove and look for black. If it's there, you'll know.
Takes a while for it to build up in this area because not much gasses leak back between the case neck and chamber before the neck brass seals it off.
Making sure your brass is properly trimmed is another good suggestion.
tankgijohn72
Well-Known Member
- Joined
- Feb 11, 2014
- Messages
- 459
Last edited:
tankgijohn72
Well-Known Member
- Joined
- Feb 11, 2014
- Messages
- 459
It sounds like you are good to go with the reduced load. But, am curious as to how many rounds you have on the barrel.
Hi all, bringing this one back to life. I had been cleaning my rifle with butches boreshine and it had worked pretty good. I decided to switch it up based off lots of good reviews and try boretech c4. Cant say enough good things about it. I cleaned with the boretech right after i cleaned with butches and was amazed at the amount of carbon that came out. My bottles of butches are now 10 years so maybe that played into it?
But i pushed a couple wet patches through, let soad for an hour, couple more wet patches then scrubbed. After scrubbing a couple wet patched and left for a few more hours and final dry patches came out clean
I started loading to back to where i was originally at 80.5gr and its butter smooth extraction and no over pressure anymore.
I had some of the 78.5gr loads left over and some new 80.5 loads and went to the mountains. 78.5 was corrected to 2880fps and my 80.5 was bang on with the original 2950fps.
So give that stuff a try. Its worth it!
But i pushed a couple wet patches through, let soad for an hour, couple more wet patches then scrubbed. After scrubbing a couple wet patched and left for a few more hours and final dry patches came out clean
I started loading to back to where i was originally at 80.5gr and its butter smooth extraction and no over pressure anymore.
I had some of the 78.5gr loads left over and some new 80.5 loads and went to the mountains. 78.5 was corrected to 2880fps and my 80.5 was bang on with the original 2950fps.
So give that stuff a try. Its worth it!
Laelkhunter
Well-Known Member
It being old could be the reason, especially if you dip the bore brush or patch into the bottle to wet it with the solvent.
wildcat455
Well-Known Member
I know I'll be stepping in a big pile of doo doo here, but I haven't found anything, and I do mean anything that will clean carbon, powder residue, or copper as quickly and effortlessly as the BoreTech products.
I've been at this a while, and I've run my course with everything else. I was even sold on and committed to another product when Jason at Bruno's said hey, give this a try. After using BoreTech, I'll never go back to anything else. Yeah, ya gotta get some of their brushes, yeah, it's counterintuitive to not have to scrub like the dickens, but seriously. Results are results. The only barrels I ever even consider breaking the brushes out on now are my factory "chatter barrels" LOL!!
On those rougher factory barrels, I usually start with BoreTech Carbon remover, 4 wet patches, wait 20, brush with drenched proof positive nylon brush (caliber specific) about 30 strokes, wait 20, wet patch 4 times, if no black on last patch, switch to BoreTech Eliminator, and repeat the above process.
All my custom rifles clean up within the first 8 patches and no brush, but then I clean after every outing, too.
Only time I've used BoreTech C4 product or BoreTech cu+2, is when I first started cleaning with BoreTech and my rifles were a mess, and when I get a new to me used rifle.
Happy it worked out for you, shawnb.
I've been at this a while, and I've run my course with everything else. I was even sold on and committed to another product when Jason at Bruno's said hey, give this a try. After using BoreTech, I'll never go back to anything else. Yeah, ya gotta get some of their brushes, yeah, it's counterintuitive to not have to scrub like the dickens, but seriously. Results are results. The only barrels I ever even consider breaking the brushes out on now are my factory "chatter barrels" LOL!!
On those rougher factory barrels, I usually start with BoreTech Carbon remover, 4 wet patches, wait 20, brush with drenched proof positive nylon brush (caliber specific) about 30 strokes, wait 20, wet patch 4 times, if no black on last patch, switch to BoreTech Eliminator, and repeat the above process.
All my custom rifles clean up within the first 8 patches and no brush, but then I clean after every outing, too.
Only time I've used BoreTech C4 product or BoreTech cu+2, is when I first started cleaning with BoreTech and my rifles were a mess, and when I get a new to me used rifle.
Happy it worked out for you, shawnb.
