J4 Precision Jackets

J4 Precision Jackets are known to be the most consistent and concentric bullet jackets in the world giving them a reputation that is unmatched. Berger Bullets as well as most custom bullet makers use J4 Precision Jackets exclusively. Bullets made with J4 Precision Jackets are used by benchrest shooters who use only the most accurate components. Mass produced bullet manufactures claim that they can make bullet jackets that measure .0003 or less variation in wall thickness, however, if you check you will find that only the J4 Precision Jacket meets this required tolerance with every lot. Making accurate bullets takes great care and patience and using J4 Precision Jackets is the only way you will achieve the highest level of accuracy with your bullets.

 

Part Number Diameter Length Jackets Per Bucket
17 CALIBER
62-1720560 0.172 .560 6,000
20 CALIBER
62-2040595 0.204 .595 4,500
62-2040640 0.204 .640 4,200
22 CALIBER
62-2240600 0.224 .600 3,000
62-2240705 0.224 .705 2,600
62-2240740 0.224 .740 2,500
62-2240800 0.224 .800 2,400
62-2240930 0.224 .930 2,000
62-2241000 0.224 1.000 1,800
62-2241060 0.224 1.060 1,700
6 MM
62-2430790 0.243 .790 2,000
62-2430825 0.243 .825 1,800
62-2430900 0.243 .900 1,700
62-2431050 0.243 1.050 1,400
62-2431150 0.243 1.150 1,300
62-2431290 0.243 1.290 1,100
25 CALIBER
62-2571125 0.257 1.125 1,200
6.5 MM
62-2641180 0.264 1.180 1,000
62-2641325 0.264 1.325 900
270 CALIBER
62-2771130 0.277 1.130 1,000
62-2771220 0.277 1.220 900
62-2771260 0.277 1.260 900
7 MM
62-2841200 0.284 1.200 900
62-2841340 0.284 1.340 800
62-2841440 0.284 1.440 700
30 CALIBER
62-3080925 0.308 0.925 1,100
62-3081000 0.308 1.000 1,000
62-3081150 0.308 1.150 800
62-3081200 0.308 1.200 800
62-3081300 0.308 1.300 700
62-3081400 0.308 1.400 650

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