ORIGINAL: Underclocked
The ramrod is only extended by the method described, unscrew 4" section, reverse and screw back on thinner internal part. The rifling groove to land ratio looks 1:1 to my eyes but...
I'd bet the ramrod is quite similar to the Apex rod.
The width of the grooves in the Apex were probably twice the width of the lands. If yourGenesis barrelwere rifled that way, you couldn't miss it.