What is the difference between the Forster Bump and Neck Sizing Die and the Forster Neck Sizing die or the Forster Full Length Sizing die with sizing bushings.

I know this must be a very basic questions, but the use descriptions seem very similar but confusing.

Also, is the Redding body die just a Redding Type S full length die without the internals?

Thanks!

Don't know about the first one, but the body die is a fl sizer that doesn't touch the neck at all, it's machined out larger than the neck. Handy die to have.

edit: Re-read the first part. Don't know offhand about the "bump" die. The bushing dies allow you to set neck tension by changing how much you size the neck. Smaller bushings will size the neck down more.

Not clear if you need this part, but neck sizers are just for bolt actions or single shots, they size the neck without moving the shoulder, leaving the rest of the case fire formed to your rifle's chamber. FL sizing must be done for automatics and lever actions as well I believe. Neck sized brass will sometimes need to have the shoulder bumped when headspace on the brass gets too long after a few firings, that's what the body die is for, or a fl sizer can be used in it's place. For a bolt action, a neck sizer+body die is the way to go.