BB size not uniform

[Blowpipe Sam]

Hey guys I’m man enough to admit when I’m wrong.  I found the original weight file (still stored in the scale!) I made for the bird shot and BB’s.

The actual variation in weight I recorded for some Crosman Copperheads was .076 grain.  I wrote it in my notes as 0.76 grain.

My head is both bloody and bowed.

[Tex D.]

I got my nephew a daisy Avanti last year. I bought Daisy .177 match, daisy precision, crosman copperhead, Hornady steel and crosman black widow. The 499 is a muzzle loader. All but the daisy match would hit the bottom pretty quick. With the match grade bbs, you'd have to wait for them to hit the bottom. As far as accuracy, it was night and day. The daisy match were the best hands down. I checked them all with a micrometer and the daisy match were the closest to .177 at .175 and the most consistent from one bb to the next. The rest ran about .173 to .174. I didn't check for roundness but it looks like several of the guys on this forum are way ahead of me on weighing and checking that. Just my 2 cents worth.

[airgunaut]

I've been casually looking at each group of BBs poured out of the jar when I'm preparing for the next shoot. They look uniform and round. If any were as misshapen or undersize as the few I found on the ground, they would have been obvious.

I think some of the shot BBs simply had the zinc coating blasted off upon impact. There might well be tiny differences out of the container, but without closer inspection or measuring tools, nothing shows up. If I ever put the gun on rests and shoot bullseye targets I might see a difference in shot results. The cans, shot offhand standing or even sitting with a bent knee, aren't as good a test of accuracy. The M25 is doing a great job at plinking.