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Originally Posted by rjd3282
Look at a shell holder chart.
Originally Posted by wjkuleck
Great idea! There are relatively few "basic cases," e.g., the .470" Mauser, which is "behind" everything from the 7x57 to the .308 family to the .30-'06, the 9x57, etc.
this would not always be true, because a shell case holder only holds by the rim diameter and some cases could have the same rim diameter, but be totally different type cases, example: one case is rimmed the other rimless. best source is a reloading guide as the rim diameter size is given plus info on class of case or parent cartridge. example: 25-06 and 338-06 have the same rim diameter as does a 243 win and a 7mm-08, because a 25-06 and the 338-06 are based off the 30-06 and the 243 and 7mm-08 are based off the 308 win, and the 308 win is based of the 30-06. part of the reason the 30-06 is nicknamed the father and grandfather of most modern calibers used today. hope this helps to explain this.
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