Nitro cards

[y2k]

Anyone here use nitro cards track of the wolf carries them. I’m talking for like 45 calibre cast lead smokeless rounds i.e. 4560 or 4570. What is their purpose?

 

[y2k]

Or their fibre wads at track of the wolf

 

[jamesharrison]

There are several reasons for using wads in BP cartridges. One of them is to hold the powder in the case if you are breech seating bullets. Another is to compress the powder in order to get good combustion with black powder. A third is to ensure there is no air space between the black powder and the bullet. Yet another is to hold the powder charge back against the bullet, if you are using small charges of a fast burning powder. Still another is to seal the bore to prevent gas blow-by before the bullet is able to expand to fit the barrel’s lands & grooves. Ok, one more; they are used to protect the base of the bullet.

The purpose you are trying to achieve will determine the type & thickness of the card / wad you will use.