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Post by Richard on Jan 18, 2017 9:26:58 GMT -5
So...................then the story is: It is not necessarily the Clays that destroys the locking ring as some have had the problem with single powders and N-110 as a booster. IMHO, what it comes down to is that there is a lot of heat and pressures unlike those experienced with the OLD Savage .50 SML and those relatively mild loads. We are pushing the limits and are on the cutting edge so there will be some failures but the cost of a simple locking ring should not deter us from doing what we do?
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Post by Deleted on Jan 18, 2017 9:33:57 GMT -5
Inspected my breech plugs earlier this week and found this. .030 tungsten carbide bushing maybe 25 shots with a load of 35 grs. of N110 and a 200ftx sabotless That sucks. I think that one would have to go in the trash.
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Post by fishhawk on Jan 18, 2017 9:41:33 GMT -5
Where are you guys getting your bushings and locking rings? I still sell bushings in Tungsten carbide, and pure Tungsten. I also sell the lock rings. I no longer make bushings for Luke, he has cut all the little guys out of his supply train.
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Post by schunter on Jan 18, 2017 9:44:26 GMT -5
Inspected my breech plugs earlier this week and found this. .030 tungsten carbide bushing maybe 25 shots with a load of 35 grs. of N110 and a 200ftx sabotless That sucks. I think that one would have to go in the trash.
I took it out last night. It was in 3 pieces. Trash for sure!
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Post by Deleted on Jan 18, 2017 9:45:22 GMT -5
Where are you guys getting your bushings and locking rings? I got mine from Luke and airborneike. Sorry fishhawk, forgot to mention I've got a cpl tungsten/carbide bushings coming from you. Thanks again.
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Post by fishhawk on Jan 18, 2017 9:45:38 GMT -5
Rambler, are you sure that is Tungsten carbide and not pure Tungsten? Who did you purchase it from. I have not seen Tungsten carbide I made ever crack, pure Tungsten is another story.
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Post by Deleted on Jan 18, 2017 9:51:31 GMT -5
Rambler, are you sure that is Tungsten carbide and not pure Tungsten? Who did you purchase it from. I have not seen Tungsten carbide I made ever crack, pure Tungsten is another story. The only bushings I've had crack are pure tungsten. got a cpl pure carbide ones from Luke in the past and they are still ok. That's why I figured it'd be best to get the tungsten/carbide blend. I've gotten parts from various folks over the years and have had good luck, as with services also, 'cept maybe once.
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Post by fishhawk on Jan 18, 2017 11:07:50 GMT -5
I don't know what materials Luke sells, but I'm betting his Carbide bushing is 90/10 Tungsten Carbide?
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Post by Deleted on Jan 18, 2017 11:38:59 GMT -5
I don't know what materials Luke sells, but I'm betting his Carbide bushing is 90/10 Tungsten Carbide? Not sure what they were, he gave me a good deal on close out sale. they are good for the money.
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Post by jims on Jan 18, 2017 12:59:34 GMT -5
That was a mild load of V110.
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Post by Richard on Jan 18, 2017 17:24:57 GMT -5
So Greg.................which bushing are supposed to be the best? I was under the impression that pure carbide (if there is such a bushing) is the best. Do you favor the blended Tungsten/carbide or the Tungsten? You don't sell the carbide? I have some that I got from a guy named James and I believe he said they were pure carbide. They sure last.
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Post by oneshotike on Jan 18, 2017 19:42:29 GMT -5
Inspected my breech plugs earlier this week and found this. .030 tungsten carbide bushing maybe 25 shots with a load of 35 grs. of N110 and a 200ftx sabotless Dag gon Chinese parts.....
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Post by fishhawk on Jan 19, 2017 11:19:55 GMT -5
So Greg.................which bushing are supposed to be the best? I was under the impression that pure carbide (if there is such a bushing) is the best. Do you favor the blended Tungsten/carbide or the Tungsten? You don't sell the carbide? I have some that I got from a guy named James and I believe he said they were pure carbide. They sure last. I use 2 different materials. The first I used is Tungsten carbide. This is 90% Tungsten with 10% Cobalt as a bonding agent. This is very likely what many are referring to as carbide. I am only making bushings I sell directly for several months now. What anyone else call theirs I can't control. I believe this is powdered Tungsten and Cobalt powder sintered together with heat and pressure. This is sometimes referred to as 90/10. These are what Richard first tested for me in a 209 gun. These were lasting 300 and more shots with the loads we were shooting at the time. As far as I know, none of these bushings have ever cracked. Any of these Tungsten Carbide bushings I made were EDM drilled only. This means that the hole of a new bushing will have a thin coating of copper and slag from the electrode caused by the single polarity of the EDM drill. So, a new Tungsten carbide bushing will wear a couple thousandths of the copper/slag out with the first few shots. Because the EDM drill electrode used is a hollow tube of .025" copper in a guide the spinning electrode can wobble more or less with each bushing drilled. So, when you check the hole in a new .030" target bushing, it will measure .028"- .030". After shot a few times they should be .030"- .032". I believe these wear due to the bonding Cobalt burning away taking to Tungsten with it To identify Tungsten carbide bushings I make, the ends of the bushing will have a sharp edge. When Earnhardt from the other board started pushing his .416 with 120gr and more of Retumbo and 325-350gr bullets, Tungsten carbide bushings would burn several thousandths in 15 shots or less. So we looked for a material that would burn out less, this is where pure Tungsten came in. This is 99.95% Tungsten powder that is also sintered together. Tungsten bushings burn away much slower that the first material when shot. The only flaw with pure Tungsten is they will split due to pressure, pocket size, vent hole diameter, and the fact they are very brittle. When EDM drilling these it took three times the time and electrode to make a hole. Bushings of .030" and less were EDM drilled to a smaller hole size and all sizes were finished on a WIRE EDM for perfect hole size and no slag due to the dual polarity of the wire EDM machine. The reason for this was originally wanting perfect size hole to regulate pressure to the primer on the high pressure sub calibers that pure Tungsten bushings were developed for. Pure Tungsten bushings I make are identified by a small bevel on the ends where the first material ones are sharp. In my opinion, the only guns that that need pure Tungsten bushings are ones that can burn out a Tungsten carbide bushing too fast. Way to many people wanted pure Tungsten before enough testing was done, and my statement that their gun likely didn't need them based on caliber and load.
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Post by redmule on Feb 3, 2017 9:34:27 GMT -5
I got my cracked bushing out and both are pure tungsten so that explains that for sure. Fish hawk is hooking me up with couple tungsten/carbides so hopefully I won't ever need any more of em.
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