O rings....

O rings....

Joined: March 1st, 2002, 12:22 am

January 31st, 2012, 3:45 pm #1


last night I was setup to get my groups, shot a few off the workmate, and remember its s terrible bench rest platform. Swapped in a better table, and started in for real. First sighter shots were impressively grouped, set the targets of record on the back stop and started. the next shot the bolt was very stiff, the shot after that the bolt was danr near impossible to close, and the next one just whiffed. Sure enough, I'dd killed and lost the O ring on the bolt......

Anybody got an idea of a hardware store replacement till I cna get some from crosman? or just run the bolt in and test fit a few.....

Accuracy wise at 10 metres its looking good, but its a small data set, and I'm reluctant to claim "good groups" till I get a few more holes in the paper...


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the Lunatic Fringe of American Airgunning
Southwest Montana's headquarters for Airgunning Supremacy
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Joined: November 14th, 2002, 6:27 pm

January 31st, 2012, 3:53 pm #2

I have the good ones in 70 or 90 durometer urethane. We use 70 on our tunes.
310-327-3581
I have no upgrade for the .177 cal as it is a metric size and I don't get urethane in metric sizes.



"NO GUNS WOULD BE A RIOT"

Later

Tim

Mac1 Airgun


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Joined: September 23rd, 2002, 6:16 pm

January 31st, 2012, 5:29 pm #3

009 is pretty big
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Joined: March 1st, 2002, 12:22 am

January 31st, 2012, 8:47 pm #4

nt

dr_subsonic's pneumatic research lab

the Lunatic Fringe of American Airgunning
Southwest Montana's headquarters for Airgunning Supremacy
Proud Sponsor of team_subsonic
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Joined: May 10th, 2008, 12:40 pm

January 31st, 2012, 10:42 pm #5

I have the good ones in 70 or 90 durometer urethane. We use 70 on our tunes.
310-327-3581
I have no upgrade for the .177 cal as it is a metric size and I don't get urethane in metric sizes.



"NO GUNS WOULD BE A RIOT"

Later

Tim

Mac1 Airgun

... Ebay item 260840990802 50pk 90 buna $4.75, item 250879689190 100pk 90 buna $7.25 - free shipping


you're scared ? go get a dog ... I'd rather die standing than live on my knees

Last edited by Fidel_in_PR on January 31st, 2012, 10:50 pm, edited 1 time in total.
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Joined: November 14th, 2002, 6:27 pm

February 1st, 2012, 1:54 pm #6

009 is pretty big
I thought we were talking M-Rod. Sorry. an oring on Bolt would be a 003-006 depending on groove depth/position and caliber.
I got in the thread late. On a Stock Disco it is a 006 in .22 most of the time. On my probes it is a 004 or 005 depending on leade work. I like bolts tight when they close.



"NO GUNS WOULD BE A RIOT"

Later

Tim

Mac1 Airgun


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Joined: September 23rd, 2002, 6:16 pm

February 1st, 2012, 2:45 pm #7

the Mrod is very rarely mentioned if at all.
So bolt probe orings would be the topic for sure.

Q: how would a smaller oring make a bolt tighter?

Be well Tim

Walter....
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Joined: March 1st, 2002, 12:22 am

February 1st, 2012, 4:37 pm #8

I thought we were talking M-Rod. Sorry. an oring on Bolt would be a 003-006 depending on groove depth/position and caliber.
I got in the thread late. On a Stock Disco it is a 006 in .22 most of the time. On my probes it is a 004 or 005 depending on leade work. I like bolts tight when they close.



"NO GUNS WOULD BE A RIOT"

Later

Tim

Mac1 Airgun

1377 converted to 1322......

dr_subsonic's pneumatic research lab

the Lunatic Fringe of American Airgunning
Southwest Montana's headquarters for Airgunning Supremacy
Proud Sponsor of team_subsonic
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