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300 Win Mag Brass


ADG’s 300 Winchester Magnum brass is known for its quality and consistency. Compatible with a range of bullet weights, from 165-200 grains, Atlas Development Group’s 300 win mag brass is a great choice for long-range hunters, target shooters, and sport shooters alike. Made in the USA, ADG brass features bolstered material in specific points to withstand repeat firing and allow more shots per casing. If you strive for superior durability and consistency, the ADG .300 Win Mag brass is the surefire option for optimized dependability, performance, and reusability. Sold in a 50 count flip top case that doubles as a carry case for your reloads.

*New Brass

Important Safety Information:

With optimized material geometry, our brass will generally have a different case volume than most other manufacturer’s brass and therefore will require a different charge weight to achieve the same pressures and velocities. We recommend using a reputable load data source and working up from their recommended minimum starting loads. We recommend reducing any existing charge weights by 10% and re-developing your specific load when replacing any component in a load recipe with a new component (brass, projectile, primer, or powder type). Failure to reduce charge weights established using other manufacturers brass may result in higher pressures and velocities while using ADG brass and may result in unsafe pressure levels.



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