i'm looking to swap my bushnell scope that came with my axis xp .308 combo with a bushnell banner 3-9x40or trophy xlt 3-9x40. does anyone know if the original base/rings will work or do i need to supply new ones? also i could decide to get a vortex crossfire ii 3-9x40 instead of either bushnell if the wind blows in the right direction the day i drop the money. same question pertains to the vortex, will the factory base/rings work? any info would be much appreciated