This bore making is done through forging a barrel over a mandrel containing a reverse image of the rifling.

Question

This bore making is done through forging a barrel over a mandrel containing a reverse image of the rifling.
A. Hammer forging
B. Button
C. Electrochemical rifling
D. Broach gang

GPT-4o mini · Answer

The correct answer is **A. Hammer forging**. Hammer forging involves forging a barrel over a mandrel that has a reverse image of the rifling, which shapes the bore of the barrel.