Here are some examples of what I am taking about on jig heads and their weights. Just looking at jig heads so much it seemed all heads of a given size, lets say 1/16 and the head size on one that has no collar or barb was the same size as one that had a collar and barb so I got a good digital scale and put many sizes on that scale. Here is some of what I found.
1/80 no Collar, in truth is about 1/64 and a 1/64 was really more like 1/48 and in kind a 1/48 looks like it came in right at 1/32.
Now here is another thing to take into account. I have a 1/32 with collar no bard and it's true weight is closer to 1/24. Then I have a minnow head 1/32 with collar and bard and it's true weight is close to 1/20.
I don't want to type every head weight I have as there are too many, but here are a few notes....
1/80, 1/64 & 1/48 I already put above.
3/32 no collar is really 1/12
1/8 Minnow head no collar was really very close to 1/8
1/16 ball head no collar was very close to 1/16, but just a tad under.
1/16 Minnow with collar and bard was really close to 1/13
1/16 Ball head with collar no bard was really also 1/13
1/8 no collar was a little less at about 1/10
1/4 end up right about 3/16
Hope this helps your plan!
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