Stainz, if you have any Lapua Midas L lying around, try it in your 63 5". From a very solid rest with good lighting my 63 5" will consistently break an inch for 5-shot groups at 25 yds.. Even el cheapo Rem Golden Bullet 36 Gr. HPs dance around an inch with an occasional mild flyer.
Mine was sold as "Used" because it had been hand selected by S&W as a gun writers' test gun, according to Roy. It's as slick as grease and will compete with any J or K frame out there with ammo it likes. It's the perfect .22 LR trail gun.