Lyman Mold Reference Websites

  • 158 Views
  • Last Post 26 March 2022
  • Topic Is Solved
Bud Hyett posted this 26 March 2022

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://ps-2.kev009.com/ohland/Cast_Bullet/Ideal-Lyman_Molds/Ideal-Lyman_Mold_Descriptions.html#400_403_406_38-40_40_cal

http://three-peaks.net/Lyman_and_Ideal_Bullet_Molds.pdf

Farm boy from Illinois, living in the magical Pacific Northwest

Attached Files

Order By: Standard | Newest | Votes
Wm Cook posted this 26 March 2022

Great reference material Bud. Thanks, Bill.

Attached Files

Lee Guthrie posted this 26 March 2022

 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 ???  

 

Attached Files

Bud Hyett posted this 26 March 2022

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

JeffinNZ posted this 26 March 2022

 We have similar on the CBA site:

https://castbulletassoc.org/downloads

Cheers from New Zealand

Attached Files

Close