Author Topic: Does a pellet gun need a crown?  (Read 2169 times)

scottyhazzard

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Does a pellet gun need a crown?
« on: April 03, 2016, 07:10:44 PM »
What does the crown do for a pellet gun? I have read people discussing using barrels without a crown to fire slugs and I wonder if the crown is necessary. Maybe without a crown I could switch back and forth between pellet and slug without any problems to shooting pellets. Could you illuminate on this?


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match

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Re: Does a pellet gun need a crown?
« Reply #1 on: April 03, 2016, 07:28:42 PM »
The crown is the finished end of the barrel - so yes all guns need a crown.

The attention to detail of the crown is very important as any unevenness, burrs, or nicks will reduce repeatability and accuracy.

Now the question is what type of crown is better for an airgun - that is a good question....

Your comment on switching between pellet and slugs sounds like you are asking about choke not crown.
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rsterne

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Re: Does a pellet gun need a crown?
« Reply #2 on: April 03, 2016, 09:57:00 PM »
I think the OP means choke, not crown, and I don't believe they are necessary if the pellet and barrel match well in diameter.... I think the choke is an attempt to make barrels less fussy, because pellets vary widely in diameter (as do the barrels themselves).... The level of standardization in airguns is IMO very poor....

The crown, as match pointed out, is simply a well finished end on the barrel, so that the pellet or bullet releases evenly all around its base at once.... It is critical to accuracy that it be square to the bore line, and centered.... IMO the angle is not critical, I think the 11 deg. "target crown" is over-rated.... I do my crowns square with a raised edge to protect it, or protect it with a muzzle brake or (usually) an air stripper.... If you use an angle on the crown it must be perfectly centered on the bore, if is at 90*, that doesn't matter, of course.... I finish my crowns by burnishing with a round head brass screw and extra fine polishing compound, working in both directions, just to make sure there are no imperfections....

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Bob La Londe

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Re: Does a pellet gun need a crown?
« Reply #3 on: April 04, 2016, 08:00:07 AM »
Lots of AR powder shooters finish their crowns the same way with a brass screw. 
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oldpro

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Re: Does a pellet gun need a crown?
« Reply #4 on: April 04, 2016, 09:36:43 AM »
This brings up another thing of interest. Maybe we should have our own Youtube channel and we can make video tutorials like recrowning. HMMMM Thinking.....
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steveoh

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Re: Does a pellet gun need a crown?
« Reply #5 on: April 04, 2016, 10:18:35 AM »
Guess what?

We have one!!

We just don't have anything there yet...

https://www.youtube.com/channel/UC_81jD-LDNigTVSYgNWiopQ

Steveoh

This brings up another thing of interest. Maybe we should have our own Youtube channel and we can make video tutorials like recrowning. HMMMM Thinking.....

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oldpro

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Re: Does a pellet gun need a crown?
« Reply #6 on: April 04, 2016, 10:30:01 AM »
Well look at that!!
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Monkeydad1969

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Re: Does a pellet gun need a crown?
« Reply #7 on: April 04, 2016, 11:13:41 AM »
Well look at that!!

I know, right?  I just subscribed. 
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Truckr6969

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Re: Does a pellet gun need a crown?
« Reply #8 on: April 04, 2016, 02:50:12 PM »
+1
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scottyhazzard

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Re: Does a pellet gun need a crown?
« Reply #9 on: April 09, 2016, 05:41:39 PM »
Match and rstern you two are smarter than I could have hoped. I asked the wrong question and still you guys gave me the right answer. I was thinking, "Choke" but we saw how far I got with that.  :o

Thanks for the answers fellas.
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