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Thread: 30 Caliber Jacket Lengths?

  1. #1
    Boolit Master BlackoutBuilder's Avatar
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    30 Caliber Jacket Lengths?

    How long are the finished jackets for a premium die set? The tubing is cut to 1.25, 1.50, and 1.75, but I wanted to know the overall lengths of those jackets, and the bullets they are formed in to. If anyone knows, thanks.
    NFA = [B]N[/B]ot [B]F[/B]reaking [B]A[/B]merican

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  2. #2
    Boolit Master



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    Not sure what you are seeking, but I make 175 Grain .308 bullets from 5/16" copper tubing. I cut the tubing to 1.30". I then round one end, and then form a base. The jacket is then run through a reducing die to get it at the .3065/.307 diameter range.

    This results in a jacket that is 1.185 (+ or -). Then seat a core, and form a Rebated Boat Tail, followed by an 8s nose swage die.

    I then have a 175grain Rebated Boat Tail bullet that has a length measurement of 1.285 (+ or -).



    The jackets are formed in a set of dies from BT Sniper; and the bullets are made in a set of Corbin .308 RBT swage dies.
    Mustang

    "In the beginning... the patriot is a scarce man, and brave and hated and scorned. When his cause succeeds, the timid join him, for then it costs nothing to be a patriot." - Mark Twain.

  3. #3
    I believe the information you seek can be found on Dave Corbins website. He has a chart in one of his downloadable books.

  4. #4
    Boolit Master Mauser 98K's Avatar
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    as a rule of thumb, i keep my jackets as short as possible. i allow just enough jacket to fully enclose the lead, and this keeps the bullet the shortest it can be. shorter bullets will stabilize in slower twist barrels and will stay stable longer as linear and rotational velocity drops with increasing range.

  5. #5
    Boolit Master BlackoutBuilder's Avatar
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    Quote Originally Posted by blltsmth View Post
    I believe the information you seek can be found on Dave Corbins website. He has a chart in one of his downloadable books.
    I sm using BT Snipers stuff.
    NFA = [B]N[/B]ot [B]F[/B]reaking [B]A[/B]merican

    It would be less disrespectful to burn the flag than to put a thin blue line through the middle of it.

  6. #6
    Boolit Master BlackoutBuilder's Avatar
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    Quote Originally Posted by Mauser 98K View Post
    as a rule of thumb, i keep my jackets as short as possible. i allow just enough jacket to fully enclose the lead, and this keeps the bullet the shortest it can be. shorter bullets will stabilize in slower twist barrels and will stay stable longer as linear and rotational velocity drops with increasing range.
    golden nugget. Thanks. Ill never forget
    NFA = [B]N[/B]ot [B]F[/B]reaking [B]A[/B]merican

    It would be less disrespectful to burn the flag than to put a thin blue line through the middle of it.

  7. #7
    Boolit Bub
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    Score a win for me today! Made a die to expand 5.7 brass for jackets for my Blackmon press! Iím excited! Canít complain for free.






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  8. #8
    Boolit Master
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    Ive got to ask, why would you make jackets from Tubing, when you have a wide variety of Jackets available in the USA? Tubing here is expensive, I can import Jackets cheaper.

  9. #9
    Boolit Master Mauser 98K's Avatar
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    to avoid having to draw them id think.. with tube all one must do is close the bottom and then run through a sizer and make a bullet. with drawing jackets it takes around 5 drawing dies depending on the jacket you make and this can get expensive. im not sure what already made jackets here in the states go for Vs copper tube, but im sure making them from tube is probably cheaper. i make mine from sheet copper because i made my dies and i can make any jacket thickness i want. im also using salvaged copper flashing for construction/ roofing. i can get hundreds of jackets worth of material for around 1.50$-2.00$ a pound.

  10. #10
    Boolit Master



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    I use 5/16 copper tubing for making bullets because it's cheaper. A 100 foot roll of copper tubing costs about $85.00 shipped to the house and will make about 1000 jackets - or a cost of $0.085 each. Buying factory made jackets runs about $355.00 for 1500; or about $0.223 each jacket (plus shipping charges). So I can make 3 copper tubing jackets for the price of a single factory made jacket. And besides; it's a hobby as I am twice retired.
    Mustang

    "In the beginning... the patriot is a scarce man, and brave and hated and scorned. When his cause succeeds, the timid join him, for then it costs nothing to be a patriot." - Mark Twain.

  11. #11
    Boolit Master BlackoutBuilder's Avatar
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    I just like being able to do things myself. Figured it would give me more options.
    NFA = [B]N[/B]ot [B]F[/B]reaking [B]A[/B]merican

    It would be less disrespectful to burn the flag than to put a thin blue line through the middle of it.

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check