Thanks Guntech. I'm obviously not an expert, but I reload for a half dozen other cartridges as well as several shotgun gauges without any problems so I think I'll keep doing it. I keep the 8x57J and 8x57JS cases separate and the others are for a single rifle in each cartridge. The case I fired was neck sized only after the first firing in a another mauser. The bolt closed without any resistance as it does with new unfired, unsized Remington brass. Like I said, I'm not in a hurry so I'll just wait until I can take it to a gunsmith with gauges and the capability to rechamber it if needed.