I believe all the 40-82 varieties use a 45-90 case.
The Ron Long 40-65 uses the 45-70 case and does in deed come out of a 40-65 die about a tenth of an inch longer. At one time RCBS offered 40-65 RL dies.
A fun little 40 caliber cartridge for most things 600 yards and under would be either the 40-50 ss or the 40-50 bn. The 40-50 ss uses 303 brit cases and the bn I believe uses 4065 cases trimmed to length and fire formed. Maybe Nathan will see this and chime in he runs those later two.

Last edited by Ranch13; 07/19/23.

the most expensive bullet there is isn't worth a plug nickel if it don't go where its supposed to.
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