DIY hydraulic case forming die???
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    Default DIY hydraulic case forming die???

    Was going to play around and build a hydraulic case forming die and wondered if anyone had experience doing this. Doesnít look hard, but Iím not paying $200 for a setup I can make in a couple hours. Thanks

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    Quote Originally Posted by Mram10 View Post
    Was going to play around and build a hydraulic case forming die and wondered if anyone had experience doing this. Doesnít look hard, but Iím not paying $200 for a setup I can make in a couple hours. Thanks
    Copy the hornady set up not the whidden one. Just my experience

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    Quote Originally Posted by Mram10 View Post
    Was going to play around and build a hydraulic case forming die and wondered if anyone had experience doing this. Doesnít look hard, but Iím not paying $200 for a setup I can make in a couple hours. Thanks
    Why are you asking? You seem to know it "ALL".

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    Quote Originally Posted by Mram10 View Post
    Was going to play around and build a hydraulic case forming die and wondered if anyone had experience doing this. Doesn’t look hard, but I’m not paying $200 for a setup I can make in a couple hours. Thanks
    Show picture of your progress, should be a cool project. I always like seeing your projects, you do a very good job of explaining them.

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    What exactly do you mean?.....a hydraulically assisted "O" press sort of thing,using say RCBS or Lee loading dies,.....or a high capacity device for turning a brass flat into a case in several stages.? A brass drawing device?

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    Quote Originally Posted by Danny1788 View Post
    Show picture of your progress, should be a cool project. I always like seeing your projects, you do a very good job of explaining them.
    Thanks Danny.

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    Quote Originally Posted by Butch Lambert View Post
    Why are you asking? You seem to know it "ALL".

    Still crabby as ever, I see. I’m actually feeling sorry for you ... I only offer advice when I have experience, but thanks.

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    Quote Originally Posted by john.k View Post
    What exactly do you mean?.....a hydraulically assisted "O" press sort of thing,using say RCBS or Lee loading dies,.....or a high capacity device for turning a brass flat into a case in several stages.? A brass drawing device?
    Not sure exactly. Primarily a die that will help turn 308 into 7-08ai by feeding a round into my rock chucker and using hydraulic pressure to form the ai portion of the round. Basic is good. Other projects have taken my attention lately, so this one is on hold

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    Quote Originally Posted by chappo555 View Post
    Copy the hornady set up not the whidden one. Just my experience
    Thanks. I’ll look into it

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    other than wasting a primer, fast powder and some tissue paper what are your objections to fireforming?

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    What is the shoulder diameter of a 7-08 AI?

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    Quote Originally Posted by lkydvl View Post
    other than wasting a primer, fast powder and some tissue paper what are your objections to fireforming?
    Noise in the shop. Trying something new. Curiosity.

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    Quote Originally Posted by GGaskill View Post
    What is the shoulder diameter of a 7-08 AI?

    .460” at shoulder to case sides.

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    How about a complete stand alone hydraulic former.
    Something like the chamber cut to same as your barrel then you insert brass , have a breach lock device of some sort then have hydraulic pressure for the case to your chamber specs?
    If not I cant see why you just domt run some 308 through 7mm08 and fire form.
    Or can you get the shoulder angle needed from sizing 308 straight to 7mm08AI
    Many years ago i would watch some of the guys down the range into all the odd stuff fireforming cases. Often they shot at golf balls for fun while forming.

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    Trying to find an alternative to fireforming since I don’t always have time to run to the range. Nice to go into the shop at midnight when you can sleep and knock out some cases.

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    AI cases don't form reliably because of the steep shoulder angle. But it might be worth the trouble to contact RCBS and see if they have forming dies. If they did, it would at least imply that it was possible.

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    That was my thought as well. But it would at least get the case pretty close to its final capacity, and create a much larger area of shoulder for headspacing.

    Worth a try, I'd think, if you've got the time and interest.


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