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Lee TL-358-158-SWC

Lee Six Cavity Bullet Mold

.38 Caliber  TL358-158-SWC



 
 



 2011-03-23


This was my first attempt with a Lee bullet. I wanted a high capacity mold for casting plinkers for the .38/.357.

When I bought this mold I had never heard of "Leementing". I expected it to cast good bullets and it did. It cast perfect bullets right out of the box ( after an aggressive  degreasing with 409 ).   I had read that Lee moulds must be smoked but I didn't do it, and it proved not to be necessary.

I would later use this mold to test the assertion that bullets cast with antimonial alloys expand with age. This testing required measuring the diameters of scores of bullets hundreds of times. I have a very good feel for the roundness and consistency of this bullet.

The maximum as cast diameter of a sampling or over 200 bullets was .361 and the minimum was .3585. I consider that about average variation. Remember it is a six cavity mold and that sample included all six cavities. Weights from a bottom pour 20 pound pot varied from 156 to 158 grains.


Since the purpose of these bullets was for practice, the real test was accuracy.
By the way, all of these loads were tumble lubed with Lee Liquid Alox and produced ZERO leading.
For more on leading, see: Index Leading Problems

The results were very good.


25 Yard Accuracy Tests
Firearm:  Thompson Contender
Caliber .357 Magnum
Barrel length  12"
Sights Weaver 2-8X
All bullets sized .3564

Powder Charge Shots per group No Groups Group Size (Inches)
         
SR 4756 4.2 5 5 1.38
Unique 4.0 5 6 1.10
Unique 4.5 5 29 1.56
Accurate No.2 4.0 5 16 0.90
Accurate No.2 4.2 5 11 1.25
Unique 6.5 5 4 1.21
         


25 Yard Accuracy Tests
Firearm:  Smith and Wesson M-19-3
Caliber .357 Magnum
Barrel length  6.5"
Sights Weaver Factory
All bullets sized .3564

Powder Charge Shots per group No Groups Group Size (Inches)
         
Unique 4.0 6 4 1.10
Unique 4.5 6 7 2.31
Accurate No.2 4.0 6 5 1.6
Unique 6.5 6 4 2.2 ( Sized .357)
         



50 Yard Accuracy Tests
Firearm:  Thompson Contender
Caliber .357 Magnum
Barrel length  12"
Sights Weaver 2-8X
All bullets sized .3564

Powder Charge Shots per Group No. Groups Group Size Avg.
         
Accurate No.2 4.2 5 22 1.58
Unique 6.5 5 6 2.58
Unique 4.5 5 3 2.5 Imperfect bullets
         
         

 

 
 

 
 

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