There is a question about Lyman and Ideal Molds sites. These are two I've used, they are close. I cannot find all that I have seen, these are for reference only.
http://three-peaks.net/Lyman_and_Ideal_Bullet_Molds.pdf
Farm boy from Illinois, living in the magical Pacific Northwest
Attached Files
Interesting. The first bullet I looked at (also the first in the chart) was a loverin design 22 bullet and the heaviest was 98 grains. I didn't do the calculation, but what would that be a 1:4 twist ???
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I think the Greenhill formula is good reference, but it was empirically developed in the 1880's. Today, there are several new formulae to use that include more attributes to consider. Berger bullets has one on their website.
Today, better barrels, chambers, throat leades, lapping barrels to have a slight choke, all contribute to a better understanding of stability. Heavier bullets do require faster twist, that is an established fact. However, the extreme twist rates are no longer needed.
Second observation, the Savage .22 High-Power was a .228 bore and a heavier bullet with faster twist. This 98-grain bullet might be for the Savage cartridge.
Farm boy from Illinois, living in the magical Pacific Northwest
Attached Files
Attached Files
RicinYakima
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oscarflytyer
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Premod70
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Pentz
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pat i
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Lucky1
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Shuz
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.22-10-45
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OU812
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John Carlson
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