The same go/no-go gauges are used for the .243 Win, .260 Rem, 7mm-08,.308 Win and I believe the .358 Win and .338 Federal. These are all based on the .308 as their parent case.Originally Posted by Hersh5317
The .22-250 is based on the 250-3000 Savage and .300 Savage case and they are not the same as the .308.
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