I had a partial case head separation using a 1.8oz buffer

[stonehog]

Some recent testing and pics. I have another pistol lower with a regular carbine tube and buffer (2.9oz). I took the Odin 12" out with the Odin bolt (I re-measured headspace and it passed fine - no idea what was going on earlier) and shot some Hornady Black factory loads (same bullet) and then a couple of my A2520 reloads. One of the 2 A2520 handloads had the ring, but a few of the Hornady cases also had a less pronounced ring starting, so I'm starting to think that I need an even heavier buffer (H3) on this CLGS setup.

I also pulled the remaining 9 that were left in the kaboom box, and segmented a Hornady case, and the 40th pre-kaboom case that had a ring. There is definitely a ridge inside the Lapua case.

The first pic is left to right: Lapua A2520 shot in carbine lower, Hornady black shot in carbine lower, and Lapua A2520 shot in pistol lower (1.8oz buffer)

The second and third pics show the Hornady black case from carbine lower and Lapua case from pistol lower. I didn't segment the Lapua case from the 2.9oz buffer (yet). Interesting that the outside rings are forming in different places (just above where the web ends, I bet). I have an adjustable buffer that I'll set up this week and do some more testing. Next up are heavier buffer, and then a different bolt (monster).

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