Bulges, Crimping and Dies - Another visit
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  1. #1
    Heavens Dinger Ringer Contributing Member
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    Bulges, Crimping and Dies - Another visit

    Well boy and girls -- There has been some discussion lately, mostly directed at reloading the 45-70 cartridge, complete with bulges and crimp issues. I thought Iíd offer up a few ideas on getting to the point where one needed to apply the crimp. Iíve been using the RCBS Cowboy dies and I think they do a great job. Here is how they play with a 405 grain Laser-Cast bullets sized to .459Ē. The brass in the pictures has been fired at least 10 times.

    A full length size gets everything back where itís supposed to be. Worrying about wearing out a case mouth is a waste of time. It will wear out eventually. With at least twenty loadings within reason, one or two more or less isnít worth sweating. Itís the price of doing business.


    A proper bell and flare will probably do more to extend case life than partial sizing. It also establishes the case neck tension holding the bullet. A proper flare will allow the bullet to enter the case neck to about the first lube groove on these 405 grain bullets. You can see the light reflective lines on the first case, sized only. The second case shows the edge of the case mouth flared. You canít see or feel the bell if done correctly.


    The second picture shows the bullet, the bullet sitting on a case that is sized only, and the bullet in a case sized, belled and flared.


    And finally we have the bullet seated and crimped. Notice on all these cases the reflective lines are straight, except at the case mouth of the flared case. Also notice the case with the seated bullets has no bulging.

    Iíd like to suggest that doing a complete operation on reloading, from sizing to crimping will produce quality ammunition and eliminate many aggravating problems with feeding and chambering. It may also increase accuracy. Hope this helps. Best regards. Wind (Iím not on the RCBS payroll and no blue poly tarps were harmed filming this blurb.)

  2. #2
    Gun Wizard
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    Are you using the RCBS crimp die or the Lee factory die that everyone on here likes so much? Just curious as I'm almost to the point of buying equipment....thanks
    gwgillespie likes this.

  3. #3
    Tinhorn
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    I like the cowboy dies they do a good job
    CPL Lou likes this.

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    Heavens Dinger Ringer Contributing Member
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    Hey there Jonny V -- That whole series is with the RCBS Cowboy set. It provides a nice roll crimp in my estimation. Best regards. Wind

  6. #5
    Wrangler
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    I'd like to compliment you Wind on the visual presentation of your information here. I decided to run only 405 cast through my CB and I now have 40 or so cast and lubed awaiting the cases.

    Thanks,
    Ken

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    Heavens Dinger Ringer Contributing Member
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    Hey there 300yddog -- Thanks. The Cowboy's are super sweet rifles. I'm all-over rosy and in love with my LTD II as well. It shoots the 300, 350 and 405 grainers incredibly well. The 405's just a hair better than the others. I'm gonna try the 405's more extensively as well in the Sharp's. It would be great to settle on one load for both rifles. Best regards. Wind

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    Banned
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    I have a problem with crimping my 45/70's with my Dillon 550. Called Lee yesterday and found out my shell plate is to thick to use the LFC crimp so sometime this week I will buy another press just for the 45/70! it will be a Lee press and I'l use the Lee FC for a good crimp.

  9. #8
    Tinhorn
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    Howdy,

    I looked at the RCBS website yesterday and saw their .45-70 dies but they weren't specifically labeled "Cowboy". Are these a special order or simply another name for their .45-70 die set ?

    Thanks for the help,
    randyc

  10. #9
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    Hey there randyc -- Try this link:

    https://shop.rcbs.com/WebConnect/Mai...te=C09J050N143

    If it doesn't work, look in their die set category and go to the Cowboy sub section. They are there. Hope this helps. Best regards. Wind
    Last edited by Wind; 12-13-2011 at 06:10 PM.

  11. #10
    Wrangler
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    Wind, what load are you shooting with your 405 Lasercast? I KNOW you have a working dinger load. thanks rc


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