Recent content by BIZNAWICH

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    The Crosman Powermaster 760...Recapturing my youth !

    Hello Goldstate...been a little while. Well the rubber tube I had on the brass breech bolt came apart. It split...guess the rubber wasn't made for the sustained stretch however.... I figured it out finally. I inadvertently broke off the magnet (used for BB's) that was embedded in the end of the...
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    760 upgrades?

    RADEN1942; I have a 1974 pre-July Powermaster 760. Traded for it 23 years ago. Used it for a few weeks then into the closet. Pulled it out a few months back and have been messing with it since. By messing I mean rebuilding it to specs...learned how from the internet (decent internet wasn't...
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    POWERMASTER 760 VINTAGE 1974 AIR LEAK

    Hi folks. Does anyone here have any viable ...doable fix for the inherent air leak from where the brass bolt enters the breech on a 1974 or similar model powermaster 760? This leak is present on every powermaster of that era's design I've come across. Crosman fixed it by wrapping the breech...
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    The Crosman Powermaster 760...Recapturing my youth !

    Gold... Yeah I filed a groove in the brass deep enough to hold a tiny o-ring and wide enough for two of them. It worked very well for about 12 shots then they wore down and tore. I'm thinking 90d o-rings to for durability but considering the trouble I had stretching the standard rings over the...
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    The Crosman Powermaster 760...Recapturing my youth !

    I recall doing the same things to try and stop the leak. Some of them turned into a lot of work for a little thing and I began to consider that I was going overboard so I got myself back to basics. What I finally did was simple and very repeatable using only 3/16" long piece of soft rubber...
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    The Crosman Powermaster 760...Recapturing my youth !

    Hello again unionrdr. I wanted to ask if you have a problem with a loss of air pressure at the breach end of any of your vintage 760's...the Power Masters when you pull the trigger. I've been trying to find a simple way to to stop the leak and I believe I've found one. I was curious if you...
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    The Crosman Powermaster 760...Recapturing my youth !

    Hello again unionrdr. Would you care to sell one? 😏 Yes, it is 1:16, 10 lands, right hand twist. Thanks, Biz
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    $3000 Giveaway!!! - Bantam Sniper HP .22

    $2299.99
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    The Crosman Powermaster 760...Recapturing my youth !

    Thanks Skillet. I haven't had any luck in my search in other arenas as well so....I think Ill buy a custom rifling button for $40 and hammer myself a rifled barrel😉 Biz
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    The Crosman Powermaster 760...Recapturing my youth !

    Good morning Skillet. Nice looking shorty. Did the chop affect the range/accuracy much? Yeah I believe they're definitely hard to find. Would you happen to know if these barrels are available anywhere at all? Otherwise I'm going to try and have a gun shop push a button through it. Thanks...
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    The Crosman Powermaster 760...Recapturing my youth !

    Hi Folks. I have a version 3. This is confirmed. I was wondering if anyone knows where I can get one of those rifled barrels from a 761XL for it? Please let me know. Thanks in advance. Now a little bragging ;) ....Just rebuilt mine for the 2nd time in the 28 years since my grandfather gave it...
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    Watch & Discuss the Umarex Gauntlet .25!

    Comprehensive review, I don't suppose that refill tank comes with this awesome piece of machinery....just kidding.😉 Steve said the rifle was well balanced even with the Co2 bottle, is it possible to use different size bottles to change out to if one runs down. I'm out hunting/plinking a lot and...
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    Identify my powermaster 760

    Hey guy good to talk to you. I've rebuilt the valve ...all o-rings installed but still no pressure build-up. I've rebuilt this rifle once before with good results, that is it worked great. This time no-go. I figure the front end of the piston assembly is worn...the cup and felt. I'm working on...
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    Identify my powermaster 760

    Hello unionrdr, thanks for the reply. My unit is a variant 3 verified. Plastic stock (good quality plastic I'm guessing...if such a thing exists lol, probably Lexan , it was used a lot back then) and wooden pump arm. I've found a nicked cup on the piston and the felt is likely in need of...