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wazapng
 Post subject: Looking to shorten my QBdeluxe barrel
PostPosted: Sun Nov 28, 2010 8:31 pm 
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Joined: Mon Apr 12, 2010 8:08 pm
Posts: 24
Anyone in Mississauga or GTA who cuts and crowns barrels? Looking to lop off 5 inches and don't have the tools (or patience) to do so.
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DerekVinyard
 Post subject: Re: Looking to shorten my QBdeluxe barrel
PostPosted: Sun Nov 28, 2010 8:43 pm 
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Joined: Wed Mar 26, 2008 7:12 pm
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Location: Woodstock
Woodstock... If you want to ship it.


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Suprmatic
 Post subject: Re: Looking to shorten my QBdeluxe barrel
PostPosted: Mon Nov 29, 2010 12:20 pm 
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Joined: Tue Oct 25, 2005 11:03 pm
Posts: 5330
Location: home of the Marshville Festival, Ontario, Canada
wazapng wrote:
Anyone in Mississauga or GTA who cuts and crowns barrels? Looking to lop off 5 inches and don't have the tools (or patience) to do so.

Is the barrel choked at the muzzle?
If so, you will want to cut the barrel from the breech end.
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wazapng
 Post subject: Re: Looking to shorten my QBdeluxe barrel
PostPosted: Mon Nov 29, 2010 7:48 pm 
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Posts: 24
good question. somehow I doubt the qb78 has a choked barrel, but could be a bad assumption on my part that cheaper airguns wouldn't deploy such techniques.
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Suprmatic
 Post subject: Re: Looking to shorten my QBdeluxe barrel
PostPosted: Wed Dec 01, 2010 1:24 pm 
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Joined: Tue Oct 25, 2005 11:03 pm
Posts: 5330
Location: home of the Marshville Festival, Ontario, Canada
wazapng wrote:
good question. somehow I doubt the qb78 has a choked barrel, but could be a bad assumption on my part that cheaper airguns wouldn't deploy such techniques.

Push a pellet through the bore from breech to muzzle, and concentrate on any spots that the pellet seems to present more resistance. It should occur near the muzzle, but can sometimes be felt at various points along the barrel. Some folks will cut the barrel at a point just beyond the point where one of these tight spots occurs, so that the tight spot will act as a choke on the shortened barrel - providing that this spot is somewhere in the general area where they intended on shortening the barrel to anyway.

I find that the Crosman pellets usually work best for checking the bore - they are a much harder alloy, and thus, tend to offer more resistance when a tight spot is encountered.
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Breakbeat
 Post subject: Re: Looking to shorten my QBdeluxe barrel
PostPosted: Fri Jun 03, 2011 1:06 pm 
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Joined: Wed Dec 08, 2010 12:14 am
Posts: 159
the .22 barrel on my QB is not choked, but has lots of variance in resistance along the length of the bore, even when clean.

Just something to keep in mind!
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