Micrometer seating die?

[Papajoe222]

So I loaded up 6ea. Adjusting micrometer for each round to achieve an identical measurement to the ojive and the others by setting the die for the first round and leaving it set for the other five.
Loading Barnes Match Burners groups were almost identical, only 2mm difference @100m.
Loading Sierra TMKs both groups measured out @ 9mm, with the ‘flyer’ opening up the group of individually set rounds by 2mm
My deduction based solely on this information is; At my skill level, it doesn’t make much difference at 100m. I intend to stretch the next batch out to 300. That,IMO, will tell a better story.

[JeffreyDeGraff]

So I loaded up 6ea. Adjusting micrometer for each round to achieve an identical measurement to the ojive and the others by setting the die for the first round and leaving it set for the other five.
Loading Barnes Match Burners groups were almost identical, only 2mm difference @100m.
Loading Sierra TMKs both groups measured out @ 9mm, with the ‘flyer’ opening up the group of individually set rounds by 2mm
My deduction based solely on this information is; At my skill level, it doesn’t make much difference at 100m. I intend to stretch the next batch out to 300. That,IMO, will tell a better story.

Keep it coming papajoe. I love these kinds of tests.


JTD