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Thread: Lee 1 oz slug data

  1. #1
    Boolit Master Mauser48's Avatar
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    Lee 1 oz slug data

    I only have experience loading the Lyman 525 slug that a member sent me a couple years ago. I really like the results of the Lyman. I'm looking at getting the Lee mold because it will be my first adventure into casting so I think it would be better to choose a cheap mold first. Last thing I want to do is ruin a $70 mold. With the Lyman slug I was using a Remington sts hull, blue dot, and a claybuster waa12f114 clone wad. I wasn't getting the most consistent crimp but they all shot well. All I'm looking to do is blast stuff within 50 yards, doesn't need to be super accurate. They will be shot out of smooth bores. Going for a full power load. Anyone have any good loads that would suit this role using a Remington sts/gun club hull? I'd also like to stick with blue dot if possible. I'm open to any suggestions. Thanks!
    Currently loading 223, 257 roberts, 25-06, 30-06, 8mm mauser, 7.5x55 swiss, 7.62x54r, 40 s&w, 38 special, and 12 gauge.

    Enjoy shooting and collecting milsurps!

  2. #2
    Boolit Master
    Hogtamer's Avatar
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    I've found the 7/8 oz the be consistently more accurate. There's factory loading data included with the mold too.
    "My main ambition in life is to be on the devil's most wanted list."
    Leonard Ravenhill

  3. #3
    Boolit Master JBinMN's Avatar
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    Here ya go from the Lee mold data sheet:
    https://leeprecision.com/cgi-data/in.../SM%203529.pdf

    7/8ths on top 1oz on bottom.
    I just loaded 20 yesterday afternoon with the top line of the 1oz on the chart. But I reduced the load from 49 to 46gr B.Dot. I also cut the wad petals down about 3/16th of an inch( about the top of the slug) to make sure they did not interfere with the crimp. I used shells that were 2-5/8ths rather than 2-3/4. I usually use a roll crip, but I decided to try the 6 fold "star" crimp this time. Worked out OK so far. Since I used a shorter shell ( They are factory made police/mil. tactical slug shells) , that leaves an approx. pencil end eraser type hole in the top(1/4"?) & the folded petals look like they kind of hold the slug in place. Have not tried this load out yet, but I reckon it is gonna be going about 1600-1625fps & I think that is plenty fast. Might even reduce it more.

    You should probably bookmark that link btw..


    G'Luck!
    Last edited by JBinMN; 11-10-2017 at 11:33 AM. Reason: forgot something
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  4. #4
    Boolit Master Mauser48's Avatar
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    Thanks! The data Lee lists is for a fold crimp right? That's what it looks like to me. Also, the Remington "premier" hull they list, is that the same thing as an sts?
    Currently loading 223, 257 roberts, 25-06, 30-06, 8mm mauser, 7.5x55 swiss, 7.62x54r, 40 s&w, 38 special, and 12 gauge.

    Enjoy shooting and collecting milsurps!

  5. #5
    Boolit Master


    mac60's Avatar
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    Quote Originally Posted by Mauser48 View Post
    Thanks! The data Lee lists is for a fold crimp right? That's what it looks like to me. Also, the Remington "premier" hull they list, is that the same thing as an sts?
    You are correct. The data Lee lists is for a fold crimp. Also, the Rem. "premier" hull is the same thing as an sts. I'd agree with Hogtamer 100% - the 7/8 oz. Lee slug is easier to get to shoot well than the 1 oz. version.
    So many guns, so little time
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  6. #6
    Boolit Master


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    Listen to Hogtamer. The 7/8 oz Lee should give bettter accuracy.

    But if you are happy with the Lyman slug, just get that mold. It is nearly impossible to ruin a mold if you refrain from bashing it with a hammer or banging it on the bench.
    Don Verna

    NRA Endowment Member

  7. #7
    Boolit Master
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    Have cast and shot all three of the slugs indicated above. For me the Lyman 525 gives the best results in a rifled barrel. The 1 oz Lee gives the worst results. Shot a few animals with slugs but never at more than 75 yards.

  8. #8
    Boolit Mold
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    Ballistic Products provides some pretty good load data for both the 7/8 and 1 oz drive-key slug. I've used their load data for the 7/8 slugs and obtained really good groups at 50 yards (four holes touching with one flyer 2 inches from the clover leaf)

    http://www.ballisticproducts.com/load14_04_25.htm
    http://www.ballisticproducts.com/load14_06_13.htm

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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