Bore Guide #13 Browning L70, Saako A3, A4, L61, Finnbear 491, 591, 691, Tikka 595, 590, 695, 690, Tikka T3, Howa 1500, and Weatherby Vanguard. CHAMBERED IN: 22-250, 243, 25-06, 257 Rob., 6 Rem., 250 Savage, 260 Rem., and 6.5X55