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Rifles, Reloading, Optics, Equipment
Reloading
Shooting rest for load dev.
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<blockquote data-quote="Trickymissfit" data-source="post: 1075906" data-attributes="member: 25383"><p>about thirty years ago, I built my first front rest. Boy was it a crude piece of junk! I then built another, trying to get the rifle lower to the bench. Still ended up about eight inches high, but the design was better. I then built a couple more over the next two years, and they were much better. Yet still not great unless I was seven feet tall. I sat down one day and designed one on the PC. The idea was to eliminate as much lateral slop as I could. Still ended up a little too tall due to the nut and bearing setup. I built it anyway, and it worked very well. Still at seven inches was too tall for me. I then got real serious, and started looking at ball bearing manuals. Decided I could get by with two Conrad type ball bearings instead of the Timken bearing. Then the screw and nut became the problem. I was locked on a ten thread per inch screw, when what I really wanted was a twenty thread per inch screw. Keep in mind that I had no serious idea about the top rest part; let alone how they were made. Dumpster diving one day at work I found a small ball screw and nut, and decided I had found something near perfect. WRONG! Then on another recon expedition, and found several nice ground thread screw and nuts (about a half dozen). They were perfect, and even had the ten threads per inch. The nuts were steel with a Moglice thread, and about .001" at the max. I knew I had hit the big time. Smooth as glass, and about as tight as it can get. The threads were hard, and the steel on the nut was soft. I studied the nut for about a week trying to figure out how to mount a ball bearing pack on it. Came up with a plan to mount ball bearings on both ends. Worked like a dream, but would lock up on you when it got warm in the sun. So I then made a new nut to fit the screw, and also fixed two new problems. At the range a guy offered me three hundred dollars for the rest and a simple flat top. I then started on another rest using one of the harden screws. But figured out a way to make it five inches tall. Now I've been using that one for ten years. Also went thru about a dozen rest tops. Never quite got the top I want, but what I have works well. My real issue is that I used a 20mm o.d. thread that had 10 threads per inch. If you build one, use a 3/4-10 thread. Avoid all threaded rod, as it's just not good enough.</p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 1075906, member: 25383"] about thirty years ago, I built my first front rest. Boy was it a crude piece of junk! I then built another, trying to get the rifle lower to the bench. Still ended up about eight inches high, but the design was better. I then built a couple more over the next two years, and they were much better. Yet still not great unless I was seven feet tall. I sat down one day and designed one on the PC. The idea was to eliminate as much lateral slop as I could. Still ended up a little too tall due to the nut and bearing setup. I built it anyway, and it worked very well. Still at seven inches was too tall for me. I then got real serious, and started looking at ball bearing manuals. Decided I could get by with two Conrad type ball bearings instead of the Timken bearing. Then the screw and nut became the problem. I was locked on a ten thread per inch screw, when what I really wanted was a twenty thread per inch screw. Keep in mind that I had no serious idea about the top rest part; let alone how they were made. Dumpster diving one day at work I found a small ball screw and nut, and decided I had found something near perfect. WRONG! Then on another recon expedition, and found several nice ground thread screw and nuts (about a half dozen). They were perfect, and even had the ten threads per inch. The nuts were steel with a Moglice thread, and about .001" at the max. I knew I had hit the big time. Smooth as glass, and about as tight as it can get. The threads were hard, and the steel on the nut was soft. I studied the nut for about a week trying to figure out how to mount a ball bearing pack on it. Came up with a plan to mount ball bearings on both ends. Worked like a dream, but would lock up on you when it got warm in the sun. So I then made a new nut to fit the screw, and also fixed two new problems. At the range a guy offered me three hundred dollars for the rest and a simple flat top. I then started on another rest using one of the harden screws. But figured out a way to make it five inches tall. Now I've been using that one for ten years. Also went thru about a dozen rest tops. Never quite got the top I want, but what I have works well. My real issue is that I used a 20mm o.d. thread that had 10 threads per inch. If you build one, use a 3/4-10 thread. Avoid all threaded rod, as it's just not good enough. gary [/QUOTE]
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Shooting rest for load dev.
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