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Crosman Discovery .22 Barrel Chamber-Leade Reamer
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Machine Shop Talk & AG Parts Machining
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Crosman Discovery .22 Barrel Chamber-Leade Reamer
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Topic: Crosman Discovery .22 Barrel Chamber-Leade Reamer (Read 4371 times))
Nvreloader
GTA Senior Contributor
Posts: 4401
Real Name: Don
Re: Crosman Discovery .22 Barrel Chamber-Leade Reamer
«
Reply #20 on:
April 30, 2018, 11:41:25 AM »
Knife
Do you have the 2 different Photobucket attachments/apps on your PC?
I could not see these photo's either,
I added these 2 app's to my plastic box, and I can now see these photo's.
I went back to older sites/posts with photo's that were not showing and now they show up.
Tia,
Don
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Western NV
4 Sheridan 64/67 yr models - 20 cal/Hammerli 850 Air Mag -17 cal x 2, + 22 cal /QB-79 - 22 cal /Guantlet - 22 cal / Crosman 150 - 22 cal, Second Variant Model / Crosman 160 - 1st Variant Model - 22 cal /MRod Varmint 22 cal /Sentry 705-2 - 22 cal /Sentry 705 - 9T - 25 cal / Dar 17 cal /22 cal Discovery / Dragon Fly I- 17 cal & DF II 22 cal / Diana Storm Rider 17 and 22 cal, plus
CF 4500 45 min SCBA tanks x 3, w/SB F-10 compressor
"Speeds fine, but Accuracy is final"
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ACZan
Plinker
Posts: 247
yes
Real Name: Chris
Re: Crosman Discovery .22 Barrel Chamber-Leade Reamer
«
Reply #21 on:
May 02, 2018, 08:29:00 PM »
Bob,
I can get a custom made reamer for the new L-W barrel blank I just ordered. All I need now are some dimensions to do the drawings and off to the machinist the drawing goes.
Are you saying that I need to machine the barrel to the pellet version in your graphics? It looks like Crosman machines the barrel like the bullet version of your drawing.
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USA, Ohio, Miami Township
Discovery .22 - TKO LDC, NcStar Vism 1.1-4X 24mm Mil-Dot Evolution Scope
Ataman AP16 Standard .22 Cal
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Hatsan Mod 135 .22 Cal
rsterne
Member 2000+fps Club
GTA Senior Contributor
Posts: 27130
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Real Name: Bob
Re: Crosman Discovery .22 Barrel Chamber-Leade Reamer
«
Reply #22 on:
May 03, 2018, 12:00:56 AM »
For pellets, the length of the chamber is not critical.... It can be as drawn (common in airguns) to nearly as far forward as the bullet chamber.... with the chamber ending just forward of the front of the barrel port.... The biggest difference is that for bullets you need a very shallow leade angle or they will be difficult to load.... Pellets have a smaller head diameter (barely large than the lands in some barrel, like the LW), and the back of the head is very short.... so there is almost no effort required to push the head into the bore....
Generally, as long as the chamber is not too long.... you can shoot pellets in a barrel chambered for bullet.... but bullets may be difficult, if not impossible, to load in a barrel with a short chamber intended for pellets.... Since when you are chambering your own barrel you can stop the reamer anywhere you want.... if you may at some time want to use bullets, go with a reamer intended for that.... Really the only difference in the reamer for pellets is that you don't need that 1-2 deg. leade angle, it can be 30 deg. or even 45 deg.... Again, you can stop the chamber wherever you want to.... I would go just past the barrel port for pellets.... further for bullets (how far depends on bullet shape and length)....
Bob
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Coalmont, BC, Canada
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Crosman Discovery .22 Barrel Chamber-Leade Reamer