What they must be talking about is to:
1) cover themselves by making overly conservative statements
or
2) aimed at long-range, high-power rifle shooters and benchrest shooters who will pretty much use up the life of the case in 8 rounds or are so good that notice a loss in accuracy after 8 rounds.
For handguns and any commercial rifle, cases are good as long as they are good. Learn how to inspect and, on bottleneck cases, how to watch for impending case separation.
I know that after about 15-20 loads, my .38 special and .357 Magnum brass will often develop a crack at the case mouth or in the body of the case. When this happens, the shot will not be in the group.
My 9x19 and .45ACP usually lasts until I lose it.
1) cover themselves by making overly conservative statements
or
2) aimed at long-range, high-power rifle shooters and benchrest shooters who will pretty much use up the life of the case in 8 rounds or are so good that notice a loss in accuracy after 8 rounds.
For handguns and any commercial rifle, cases are good as long as they are good. Learn how to inspect and, on bottleneck cases, how to watch for impending case separation.
I know that after about 15-20 loads, my .38 special and .357 Magnum brass will often develop a crack at the case mouth or in the body of the case. When this happens, the shot will not be in the group.
My 9x19 and .45ACP usually lasts until I lose it.