The Universal Loading Tray (LT-150M) is the most versatile on the market with its patented design. Retooled for 2005 to fit the new rounds like the WSM, WSSM, Rem Ultra Mags and the 500 S&W Mag.. It still holds almost all rifle cartridges .17 through .458 Winchester, and handgun calibers for 9MM, .38 and .45 pistol caliber.