All reamers (30 caliber and under except 17 caliber) use floating pilot bushings, sized to fit the bore of the barrel, to achieve the most accurate chamber possible.
17-223, .201 neck, .035 free bore
204 Ruger Match, .232 neck, .050 free bore
20 Tactical
20 Practical
22 Hornet, .244 neck, zero free bore
222 Remington, .254 neck, .025 free bore
223 Remington Min Spec., .252 neck, .040 free bore
224 Weatherby Mag Min Spec,. zero free bore
22-250 Remington Min SpecL, .254 neck .060 free bore
22-250 Remington Standard Dimension, .255 nec,k .060 free bore