What kind of screwy crown is this?

41magsnub · Jan 14, 2011

Winchester model 270 .22lr pump action. Shoots great. I was cleaning it and noticed the crown. There are 6 points around the muzzle that I don't know what the point of them are. The picture below really just looks like a badly mangled crown because my camera sucks, but it is just 6 points spaced out equidistantly around the bore with no damage. I've never seen a crown like that. Is it a factory screw up or was that intentional?

It shoots just fine and I have no intention on doing anything about it even if it is somehow a goof.

Thanks!

dfariswheel · Jan 14, 2011

Check to see if they're just carbon build up.
If so, it'll scratch right off with a piece of brass.

If not, it could be just a left over of the machining process that didn't get removed completely.

Caliper_Mi · Jan 14, 2011

How many grooves in the rifling and where are these marks in relation to them?

41magsnub · Jan 14, 2011

yep.. carbon build up.

Move along.. noting to see here.. ignore the noob OP

henschman · Jan 14, 2011

LOL!!! Hey, you live, you learn!

Geno · Jan 14, 2011

41magsnub:

It actually a great question. I am confident that many other folks have wondered the same, but didn't ask. THR is a great place to learn.

Thanks for the thread.

Geno

killchain · Jan 14, 2011

My Ruger 10/22's crown looks similar, and it still shoots as accurately as when I bought it.

I also thought it was a nasty crown job but then when I thought about the tens of thousands of rounds I've shot that went where I wanted them to go, I decided to leave it alone.

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What kind of screwy crown is this?

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