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Post by ratsnakeboogy on Mar 29, 2015 20:03:47 GMT -5
I've started working on a bullet knurling tool that will have a hard stop for repeatable sizing. I'll try to put some time aside to finish it this week. Ed P Would like to see it, the files while not bad are not optimal.
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Post by Jon on Mar 30, 2015 2:49:09 GMT -5
Watching with great interest
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Post by epanzella on Mar 30, 2015 9:35:06 GMT -5
I've started working on a bullet knurling tool that will have a hard stop for repeatable sizing. I'll try to put some time aside to finish it this week. Ed P Would like to see it, the files while not bad are not optimal. I have arthritis so the two files system is out for me. My knurler will be able to be powered by a crank or a drillpress, A simple design that is just an offshoot of others on the internet. Ed P
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Post by epanzella on Apr 2, 2015 18:09:00 GMT -5
I've started working on a bullet knurling tool that will have a hard stop for repeatable sizing. I'll try to put some time aside to finish it this week. Ed P Would like to see it, the files while not bad are not optimal.
Well, got the knurling tool finished today. Once I figured out what it wanted for pressure, it worked pretty well with a light uniform knurl in under 10 seconds. I'm not good with repetitive motion so I'm driving the knurler with my drill press and a foot pedal. The big knob pulls the wheels together to engage the bullet. The little knob is an adjustable solid stop for repeatability. The knurls are O1 tool steel knurled with a store bought knurler and then hardened. Two of the knurling wheels float but I was concerned about the drive wheel deforming the bullet by telegraphing any runout from my old Chinese drill press. To counteract that I made a sort of dog clutch drive so the drive wheel could be positively driven while still being able to float a bit to conform to the bullet. Gonna try to attach pix;
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Post by Jon on Apr 2, 2015 18:34:14 GMT -5
Looks good Nicely thought out. My drill press makes what you call a old drill press look like yours just came of the show room floor. Mine is so old it is American made. Let us know a price and availability if possible. Any chance of a look at a picture of the knurled bullets? How much were you able to increase the size of the bullet?
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Post by ratsnakeboogy on Apr 2, 2015 18:53:28 GMT -5
Looks well thought out. I'd need a hand crank though.
Good job!
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Post by epanzella on Apr 2, 2015 21:20:13 GMT -5
I'm going to make a hand crank for it so I can use it at the range. It will attach to the same shaft that is chucked in the drill press.
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Post by epanzella on Apr 2, 2015 21:24:08 GMT -5
Looks good Nicely thought out. My drill press makes what you call a old drill press look like yours just came of the show room floor. Mine is so old it is American made. Let us know a price and availability if possible. Any chance of a look at a picture of the knurled bullets? How much were you able to increase the size of the bullet? I tried to take a pic of the bullets but my camera won't focus close enough to see the knurling. I'll see if I can borrow a another camera. As far as availability goes I enjoy making the first copy of just about anything but making a second one is too much like work. Ed P PS. The .400 test bullets measure .404 after knurling. I made the first rollers with the finest knurler I had. I have two grades of coarser knurles I can use if I need more bullet growth but so far I like the way the gun loads.
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Post by epanzella on Apr 7, 2015 18:22:38 GMT -5
Second time out with my Savage 45 today. Got rained out but did make some progress. Upped my load from 57.0 to 62.0 RL7. 200gr XTP w/harvester blue sabot. I got three readings before the rain had my chrono going nuts. They were 2525, 2510, and 2538. I shot 2 groups with this load and they went a little under an inch and right at an inch. At 63.0 gr the group opened to 2 1/2 inches but at 64.0 it closed back down to an inch and an eigth. The orage square is 2 inches across. (100 yds) Ed P
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