Bad Crown?
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Bad Crown?
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Topic: Bad Crown? (Read 314 times))
wolverine
GTA Senior Contributor
Posts: 4126
yes
Real Name: Carl
Bad Crown?
«
on:
April 04, 2022, 06:02:11 PM »
1st a little history...
i found the barrel on my 2260 was too long when moving through the bush, so i shortened the muzzle end buy the length of the TKO. i squared it off with a file and checked it with my Starrett mechanics square. then i used a brass round head screw and a compound to get the crown.
with the warmer temps i brought it out the other day for the 1st time after shortening the barrel. all the pellets i tried are spiraling. i removed the TKO and inspected it, but didn't find any signs of clipping. when i removed the TKO, i couldn't see the pellets in flight.
i know this crown isn't perfect, but is it bad enough to make the pellets spiral?
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Crosman 2240
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.22 Benjamin NP2 / Centerpoint 3-9x40 AO
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Back_Roads
I Got A 15 Pump BB Gun :) BB Guns Got Much More Complicated :)
GTA Senior Contributor
Posts: 15873
1st Edition Crosman 760 Pump Master
Real Name: James Seiler
Re: Bad Crown?
«
Reply #1 on:
April 06, 2022, 08:48:44 AM »
Looks like the crown can be a little deeper, and there may be some burrs in the groves yet.
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mikeyb
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Posts: 1932
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Real Name: Michael
Re: Bad Crown?
«
Reply #2 on:
April 06, 2022, 09:03:54 AM »
I'm not seeing clean rifling in your images. I was able to clearly see and photograph the rifling on my recowns and think yours may still need more work(?) I have only had to do a couple recowns but both helped improve poor accuracy problems.
Link to my recrown post link here...
https://www.gatewaytoairguns.org/GTA/index.php?topic=165568.msg155849849#msg155849849
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USA, NY, Rochester
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wolverine
GTA Senior Contributor
Posts: 4126
yes
Real Name: Carl
Re: Bad Crown?
«
Reply #3 on:
April 06, 2022, 11:16:27 AM »
Yeah, your crown is way better than mine. Thanks for the link, I'll give it a try.
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U.S.A. North Carolina, Oriental
Crosman 2240
Crosman 2260 (lefthanded)-Mountain Air tuned / Hammers 3-9x32
.22 Benjamin NP2 / Centerpoint 3-9x40 AO
.22 Brocock Contour S6 / Discovery VT-2 8x44 SF
.177 Custom Shop 2400KT "Avian Assassin" / UTG 4x32
.177 HW30s Deluxe / Motorhead tuned / Hawke 2-7x32 AO
.22 Daystate Huntsman Regal XL (lefthanded) / Barra FT 3-15x50 SF
.177 HW100 BP-K (lefthanded) / Arken SH4 4-14x44 FFP
.177 Benjamin 397 / Williams peep sight
Daisy Red Ryder (who doesn't own one?)
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GTA
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All Springer/NP/PCP Air Gun Discussion General
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PCP/CO2/HPA Air Gun Gates "The Darkside"
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Bad Crown?