Its generally powder volume vs bore diameter. The more powder for a given bore dia, the more barrel wear.
eg 243, 7mm-08, 308. All basically the same case / capacity. The 243 will have the shortest...
Type: Posts; User: ChrisW
Its generally powder volume vs bore diameter. The more powder for a given bore dia, the more barrel wear.
eg 243, 7mm-08, 308. All basically the same case / capacity. The 243 will have the shortest...