I wanted to try resizing the MRD pellets to a common consistent size for a tin (instead of loosing my hair with a PelletGauge),
and I ordered the Trrobb pellet sizer.
When I got it I spent a decent amount of hours still on it to make all the FFF (form, fit, function) to my liking
.
Measured the barrel/liner, and I resized a tin of MRD's to 5.52.
And I learned something over this weekend from the excersize.
Both days minus 3-4C, 75% humidity, light snow just a white powder, not much air movement.
Sighting in @50, 10 groups of 4 per ring, pellets straight from the tin, all groups looks nothing special = average as I got used to seeing.
Next 10 groups of 4 per ring, from a resized tin, and a shocking ... these groups opened up.
Quickly jumped back to a normal tin to cross check if the liner started fulling, no, back to normal...
I didn't thought about that the lead will shrink this much from cold, and the 5.52 most likely lost a head contact with the rifling land.
This what Iearned today, the project will be on hold for next 5 or so months until my Canadian winter is gone.
And, the worst thing is - I still don't know if resizing the pellets worth a penny. Not necessarily resizing to a specific OD but at least to a consistent tin.