.58 Caliber Bullet Weight

[Schod03]

New to CWT and have been learning a lot reading posts from multiple forums.
I did not realize there were very few powder flasks used in the War because paper cartridges were already in use.
Having pre-made paper cartridges must have meant there were not a lot of bullets cast by soldiers in the field.
I find .58s in both 450 and 500 grains, they are easy to tell apart when viewed side by side. What is the weight of the .58s you typically find on a CW site?
I am in the Dakota Territory, so not directly tied to the CW, but connected by the military hardware that was used in the same time frame. A lot of Military activity here also in the 1860s and earlier.
Thank you,
Schod03

 

[Schod03]

Exact measurements on these two bullets
Left
.578 dia.
515.3 grains
1.020 inch length
Right
.576 dia
476.5 grains
1.022 inch length
My apologies for approximate weights stated in post.

 

[Seduzal]

Sorry but I'm not sure but maybe I can get you some help. Paging @ucvrelics

 

[johan_steele]

Very few bullets were cast in the field during the war. I believe the difference between the two .58 you have are that one is for the ,the Enfield and the other for the Springfield. Though I may well be wrong. UCV Relics has been paged and you will likely get an answer when he next logs in.

 

[Schod03]

Thank you for your information…just noticed the bullet on the left is the 476.5 grain…
Rookie mistake…apologies…