Grease Gunner Posted March 5, 2021 Report Share Posted March 5, 2021 (edited) This is a WW2 Savage M1a1 and I always get little puffs of gas in my face when I shoot it,Any ideas as to what may be wrong?Thanks All.Grease Gunner Edited March 5, 2021 by Grease Gunner Link to comment Share on other sites More sharing options...
jim c 351 Posted March 5, 2021 Report Share Posted March 5, 2021 Nothing is wrong. Just make sure you always wear shooting glasses.The bolt acts as a piston and upon recoiling to rear it blows gas and oil out of the hole in the rear of receiver.Jim C Link to comment Share on other sites More sharing options...
anjong-ni Posted March 5, 2021 Report Share Posted March 5, 2021 Is it an M1? Perhaps a "sand-relieved" bolt would have a little less "compression"...Phil Link to comment Share on other sites More sharing options...
StrangeRanger Posted March 5, 2021 Report Share Posted March 5, 2021 Welcome to the wonderful world of M1/M1A1s. I have to wipe a layer of CLP off my glasses when I shoot mine. FWIW this does not happen nearly as badly (if it happens at all) with '28s if you use a urethane buffer. The buffer provides a pretty good seal between the flange on the guide and the back of the receiver. On the flangeless M1 guide and metal encased buffer not so much Link to comment Share on other sites More sharing options...
Grease Gunner Posted March 5, 2021 Author Report Share Posted March 5, 2021 Thanks all for your help Link to comment Share on other sites More sharing options...
Ryo Posted March 5, 2021 Report Share Posted March 5, 2021 Welcome to the wonderful world of M1/M1A1s. I have to wipe a layer of CLP off my glasses when I shoot mine. FWIW this does not happen nearly as badly (if it happens at all) with '28s if you use a urethane buffer. The buffer provides a pretty good seal between the flange on the guide and the back of the receiver. On the flangeless M1 guide and metal encased buffer not so much Hmm.. I remember a RTV trick you do to the gap of a AR-15 charging handle when you shoot suppressed. I suppose a little RTV on a hard the buffer would do the same. Link to comment Share on other sites More sharing options...
thirtyround Posted March 6, 2021 Report Share Posted March 6, 2021 (edited) I like the "sand cut" bolt idea, shouldn't compress as much gas / air on the way back. JB Edited March 6, 2021 by thirtyround 1 Link to comment Share on other sites More sharing options...
StrangeRanger Posted March 7, 2021 Report Share Posted March 7, 2021 (edited) Welcome to the wonderful world of M1/M1A1s. I have to wipe a layer of CLP off my glasses when I shoot mine. FWIW this does not happen nearly as badly (if it happens at all) with '28s if you use a urethane buffer. The buffer provides a pretty good seal between the flange on the guide and the back of the receiver. On the flangeless M1 guide and metal encased buffer not so much Hmm.. I remember a RTV trick you do to the gap of a AR-15 charging handle when you shoot suppressed. I suppose a little RTV on a hard the buffer would do the same. You got me thinking (always dangerous). A "Dowty seal" for a 1/8" BSPP is .402" ID and would just slip over the M1 guide rod. The elastomeric seal is molded to a 2mm thick metal ring which would reduce the tendency of the seal to get extruded through the guide hole at the rear of the receiver. If you installed it behind the buffer, it might go a long way to reducing the spray. There are problems though:1) I don't know if the bolt actually impacts the buffer. If it does, the 2mm (.078") thickness might cause it to do so with significantly greater force2) It would be a sacrificial part since sooner or later it would get destroyed3) Given how the M1 buffer/guide assembly goes together would be a nightmare to install The Parker Fluid Power P/N is D9DT-2. See page O6 https://www.parker.com/literature/Tube%20Fittings%20Division/O-Rings%20and%20Seals.pdf Edited March 7, 2021 by StrangeRanger Link to comment Share on other sites More sharing options...
john Posted March 7, 2021 Report Share Posted March 7, 2021 I usually add lots of CLP to my 28's as oil and lens wipes are both much cheaper than parts!The bolts act like a pump. Use a bit less oil. One th9ing I have been thinking about is adding a dollop of RTV around the back of the buffer pilot when assembling. That wouldn't hurt anything but would seal up the gaps a bit. And it would peel off the next cleaning easily. Anyone try this? Curious....... Link to comment Share on other sites More sharing options...
Ryo Posted March 8, 2021 Report Share Posted March 8, 2021 Whole point of suggesting RTV was that the dimensions would not really change and the RTV would get into the groves to stop chance of leakage. Easy to remove like john said.Also it's not like a air tight area where all the air pressure wants to push through the hole.. I don't mind giving it a try. I'm out of RTV so I'll have to get some. I was planning on doing this any case since I have a hard buffer.. at least until PK mails me my polyurethane buffer. Link to comment Share on other sites More sharing options...
StrangeRanger Posted March 8, 2021 Report Share Posted March 8, 2021 Does PK make an M1 buffer? Last time I contacted him, he said he didn't. Link to comment Share on other sites More sharing options...
2ndArmored Posted March 8, 2021 Report Share Posted March 8, 2021 (edited) RTV is in our living room, across from the couch. What is the "RTV" you're all mentioning? Edited March 8, 2021 by 2ndArmored Link to comment Share on other sites More sharing options...
StrangeRanger Posted March 8, 2021 Report Share Posted March 8, 2021 Seriously???Room Temperature Vulcanizing silicone adhesive Link to comment Share on other sites More sharing options...
Tiz Posted March 8, 2021 Report Share Posted March 8, 2021 RTV is in our living room, across from the couch. What is the "RTV" you're all mentioning?That is cute. I needed the laugh. Link to comment Share on other sites More sharing options...
Ryo Posted March 8, 2021 Report Share Posted March 8, 2021 (edited) Does PK make an M1 buffer? Last time I contacted him, he said he didn't. Sorry I was referring to my 1928 buffer. I have no idea if he makes one for the M1 yet. I find is strange he wouldn't make one, but maybe he doesn't do many M1s to make it worth doing.. though I would have thought it would be some type of cookie cutter to make buffers. Edited March 9, 2021 by Ryo Link to comment Share on other sites More sharing options...
ppgcowboy Posted March 8, 2021 Report Share Posted March 8, 2021 The m1/m1a1 buffer is a different animal. Link to comment Share on other sites More sharing options...
StrangeRanger Posted March 8, 2021 Report Share Posted March 8, 2021 Doug Richardson's catalog has an improved M1/M12A1 buffer but I'm afraid that ship has sailed Link to comment Share on other sites More sharing options...
The1930sRust Posted March 8, 2021 Report Share Posted March 8, 2021 This actually wins The Board for the month. RRTV is in our living room, across from the couch. What is the "RTV" you're all mentioning? Link to comment Share on other sites More sharing options...
Waffen Und Bier Posted March 9, 2021 Report Share Posted March 9, 2021 That's why Eastwood was squinting (and possibly even flinching) so much in Kelly's Heroes. Watch his face when he shoots. Even in Dirty Harry. Link to comment Share on other sites More sharing options...
mnshooter Posted March 11, 2021 Report Share Posted March 11, 2021 (edited) Clint and many others approaching 90 years old do tend to squint. No Presidential reference intended or implied. When I switched to my own version of a M1 buffer, I sandwiched a steel plate between two pieces of neoprene/polyurethane/whatever.I made the rear piece with an undersized hole that was a tight fit over the rod. Totally eliminated rear hole blowback. (Make your own joke). Edited March 11, 2021 by mnshooter Link to comment Share on other sites More sharing options...
Waffen Und Bier Posted March 12, 2021 Report Share Posted March 12, 2021 1970 and 1971. He was 41 and 42 respectively at the time. No excuse 😂 Link to comment Share on other sites More sharing options...
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