What is the 8 mm UltraCat?

The 8 mm UltraCat is a wildcat rifle cartridge in the UltraCat family, introduced in 2000.

What bullet diameter does the 8 mm UltraCat use?

The 8 mm UltraCat uses a bullet diameter of 0.323 inches.

The 8 mm UltraCat has a Rimless, Bottlenecked case type.

The 8 mm UltraCat uses a Large Rifle (.210") primer.

The UltraCat family includes the 8 mm UltraCat and other related cartridges. Browse the full family on OpenCartridge.

Rifle Wildcat

Dimensions (inches)

Bullet Ø	0.323
Rim Ø	0.53

Community Load Data

Filter Loads

Bullet Type

Powder (name or brand)

Min MV (fps)

Max MV (fps)

No load data submitted yet for 8 mm UltraCat.

No discussion yet. Be the first to start a conversation about 8 mm UltraCat.