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7-30 Waters

7-30w

In 1976, Winchester standardized the 7-30 Water. Handloading guru and all-around firearms authority, Ken Waters, designed and promoted the 7-30 chambering. His goal was to offer deer hunters a superior alternative to the 30-30, with a round that generated sufficient energy and a flatter trajectory but with significantly less recoil.

His design used a slightly sharper shoulder and a shorter neck than the parent 30-30 case. This gave it a bit more usable capacity. It also utilized an almost 20% higher SAAMI working pressure. This latter allowed the 7-30 to generate significantly more energy than factory 30-30 loads of that era.

Despite these advantages, the 7-30 Waters never achieved any significant measure of success; due in no small part to an almost total lack of marketing effort by any gun-maker and a significant degree of disregard by gun-writers who, in that era, harbored an almost visceral distain of anything lever-action — both the rifles and the chamberings dedicated to those rifles.

 


 

This is too bad as the 7-30 had a lot to offer. It was an ideal choice for whitetail hunting where shots are held to about 300 yards or less.

As with all cartridges used in guns with a tubular magazine, a properly applied crimp can smooth and ease chambering and a crimp is critical to lock the case mouth into the cannelure and thereby prevent recoil and chambering forces from driving the bullet into the case. In some instances, a roll crimp might be the best option but the Lee Factory Crimp Die usually does a better job and the crimp it applies will not damage a cast bullet as chamber pressure drives that from the case.

Heritage of this case dates to 1879 with the introduction of the 38-50 Ballard case.


The text associated with the cartridge description reflects opinions and conclusions of the author, M.L. (Mic) McPherson. Lee Precision and its employees do not necessarily either agree or disagree with any of his comments. We present these with due deference to his recognized expertise in the firearms field. His acumen extends to handloading and all aspects of ballistics - internal, external, and terminal.
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