What is the .257 Ackley Improved?

The .257 Ackley Improved is a wildcat rifle cartridge in the Ackley Improved Cartridges family.

What bullet diameter does the .257 Ackley Improved use?

The .257 Ackley Improved uses a bullet diameter of 0.257 inches.

The Ackley Improved Cartridges family includes the .257 Ackley Improved and other related cartridges. Browse the full family on OpenCartridge.

Rifle Wildcat

Family	Ackley Improved Cartridges

Dimensions (inches)

Bullet Ø	0.257

Parent Cases

.257 Roberts

Community Load Data

Filter Loads

Bullet Type

Powder (name or brand)

Min MV (fps)

Max MV (fps)

No load data submitted yet for .257 Ackley Improved.

No discussion yet. Be the first to start a conversation about .257 Ackley Improved.

More from the Ackley Improved Cartridges