This came up in another thread and it was recommended that it be it's own instead of spinning off, so I think some good questions to get a discussion going for those that have experienced it are:
1. What was the state of the inner surface of brass neck before loading? (Wet tumbled squeaky clean, dry tumbled, nylon brush, don't even touch it, etc.)
2. How long had the ammo been loaded?
3. What elements was the ammo exposed to?
4. What issues did it cause?
5. How did you confirm it?
6. Did you find a fix for it?
My experience:
1. Peterson brass with multiple firings, dry tumbled after sizing, nylon brushed necks. H4831SC, Berger 105VLD.
2. Ammo was loaded roughly 6-8 months before experiencing issues, 100rds loaded early fall after truing the load for the hunting season.
3. The ammo was in (2) 50rd blue plastic ammo boxes, and rode around in the truck for around a week through 2 seasons, otherwise stored in my equipment room with a controlled climate.
4. When I experienced it, temps were about 20° colder than during validation. I validated in about 50° weather, it was a cold spring morning and about 30° when I noticed the issue. Noticed high impacts or misses at a target used for truing and validation, bolt lift, and shiny ejector swipes with a load that was 2gr below ejector marks at 50°.
5. Did some research and came across cold weld, bumped a few rounds a couple thou in the seating die and could feel and audibly hear the bond break.
6. Read that graphite neck lube would prevent the issue and implemented dusting necks with a q-tip immediately prior to seating to my load process and haven't noticed an issue since.
Another member posted they still experienced cold weld even using graphite lube in a slightly different manner than I am, so I plan to check ammo loaded last fall and see if it is present and report back.
1. What was the state of the inner surface of brass neck before loading? (Wet tumbled squeaky clean, dry tumbled, nylon brush, don't even touch it, etc.)
2. How long had the ammo been loaded?
3. What elements was the ammo exposed to?
4. What issues did it cause?
5. How did you confirm it?
6. Did you find a fix for it?
My experience:
1. Peterson brass with multiple firings, dry tumbled after sizing, nylon brushed necks. H4831SC, Berger 105VLD.
2. Ammo was loaded roughly 6-8 months before experiencing issues, 100rds loaded early fall after truing the load for the hunting season.
3. The ammo was in (2) 50rd blue plastic ammo boxes, and rode around in the truck for around a week through 2 seasons, otherwise stored in my equipment room with a controlled climate.
4. When I experienced it, temps were about 20° colder than during validation. I validated in about 50° weather, it was a cold spring morning and about 30° when I noticed the issue. Noticed high impacts or misses at a target used for truing and validation, bolt lift, and shiny ejector swipes with a load that was 2gr below ejector marks at 50°.
5. Did some research and came across cold weld, bumped a few rounds a couple thou in the seating die and could feel and audibly hear the bond break.
6. Read that graphite neck lube would prevent the issue and implemented dusting necks with a q-tip immediately prior to seating to my load process and haven't noticed an issue since.
Another member posted they still experienced cold weld even using graphite lube in a slightly different manner than I am, so I plan to check ammo loaded last fall and see if it is present and report back.
