Lots of Gunsmiths offer .25" MOA on their rifles. My question would be this. There is about 100 threads on here talking about cleaning your barrel, and why does your group size almost always increases after a good cleaning. Then someone will post put another 20-30 rounds down the tube and the groups will get back to normal. Do these guys that offer .25" MOA put 20-30 rounds down the tube before they shoot the .25" or better test target? If not, why are they getting such tight groups with a clean barrel? Thanks for your input.
This no dought will be a dumb question
- Thread starter phillip61
- Start date
Not being a SA, BUT YOU need to find out what your rifle likes. I knew a guy in Alaska whose groups went to the crapper, his ONLY solution was to tip the rifle muzzle down and to fill it with "shooters choice". And that took care of the problem. Other people clean thoroughly and fire 10-20 shots for best groups. Take yer pik.
When I clean my groups really go bad........
the 1/4MOA ones become 1/2MOA
Really. The 6PPC BR crowd cleans after every 5-10 rounds and they routinely shoot .2" groups and lots of times smaller.
I clean when I feel I need to. Normally (heaven forbid) I run a Bore Snake thru every 100 or so and clean every 250-300.
But that is with the high quality hand lapped barrels from Bartlien, Krieger, etc.
BTW
This isn't a dumb question but it is "doubt"
the 1/4MOA ones become 1/2MOA
Really. The 6PPC BR crowd cleans after every 5-10 rounds and they routinely shoot .2" groups and lots of times smaller.
I clean when I feel I need to. Normally (heaven forbid) I run a Bore Snake thru every 100 or so and clean every 250-300.
But that is with the high quality hand lapped barrels from Bartlien, Krieger, etc.
BTW
This isn't a dumb question but it is "doubt"
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I think the question is very relevant and am very much looking forward to some
guys who build these very rifles comment on it.
guys who build these very rifles comment on it.
There are lots of threads on barrel break in and no most of the test targets are not shot after 20-30rds. After cleaning the barrel need a bit of fouling and you will usually see groups tighten up again. My rifles will stay tight for a few hundred rounds then I clean again. After I clean I fire it before going to a match.
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In my experience, really high quality barrels suffer far less from clean bore shift or whatever it's called. Both my Rainier UM AR15 barrel (Shilen) and my PacNor 6XC barrel exhibit no shift or accuracy degradation after they get cleaned. At least not enough for me to notice. They also don't experience any accuracy degradation from getting dirty, so they don't get cleaned very often. On the other hand, I'll be damned if my buddy's 700 factory barrel doesn't get more accurate the more it fouls.
Some people are just against the idea but I have never seen any issues and I use them all the time.
OK, so does anyone know why the 6PPC BR crowd can clean every 10 rounds with such amazing accuracy and other rifles get better the more fouled they become? It is known that electrolytic action between the copper and the steel in the barrel causes the barrel to pit, and I know this isn't as corrosive as corrosive primers can be, but why wouldn't you want to clean the copper out if it harms your barrel over time? Yeah accuracy, and some people say that cleaning the bore wears it out too. So how does a brush and some cleaner wear it out more than the friction of the bullets going down the bore?
If the custom rifles can shoot well after a cleaning, then why are the standard factory barrels degraded by cleaning. You have to admit that these factors don't make sense.
If the custom rifles can shoot well after a cleaning, then why are the standard factory barrels degraded by cleaning. You have to admit that these factors don't make sense.
I am by no means an expert on this. However I would guess that the reason is because custom barrels are machined to much tighter tolerances than factory. So the tighter and better machining leeds to less pitting/ imperfections that need filled.
That may or may not be the case but it seems logical to me.
That may or may not be the case but it seems logical to me.
That's exactly what I was thinking, but in life, what seems logical isn't always correct. Each gun is unique, so find out what yours likes-ammo, cleaning, caressing, etc. and do your your best to always accommodate her needs! (Just like my wife.). Works every time. Merry Christmas and a prosperous New Year to ALL !!!!
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