I have a Remington 870 express with regular barrel and a smoothbore slug barrel. Slug barrel shoots great out to 50 yards or so but thats it. Looking to get about a 125 yards. Remingtons rifled barrel with scope mount is $190 and Hastings is $280. Mossbergs is $170 with a Bushnell scope mounted bore sighted. Is it worth it ? And are they accurate enough to get this distance?