The Savage Strikers are left bolt, right port...that might work for you. They can also be had from the factory in .243 winny w/ the AMB (Adjustable Muzzle Brake
). A better choice may be the .260 Rem for 500+ yards. The top gun pictures is my 22-250 w/ a factory varmint taper rifle barrel cut to 16". It will shoot 50gr VM's into the .1's on a good day but stick to the .3's very consistently. Dial in a little better than 10MOA and milk jugs at 500yds are busted. The bottom gun is the Super Striker in .223 Remington...thyy come w/ a 9" twist...nice for heavies but not my flavor...now it wears a 16.75" Shilen SS Match barrel in 7-08.