I need to determine correctly the rate of twist for my circa 1973 Remington 700 BDL Varmint Special with heavy barrel in 22-250. This information is critical in knowing how heavy a bullet I can use, and still maintain stability, for coyote hunting as well as other varmints. I would like to be able to reach out and visit those coyotes with a stable slug. I'm hoping that the rifle's rate of twist is not '1 in 12' or even worse yet '1 in 14.' Does anyone know if Remington had ever changed the rate of twist on this model during the rifle's lifespan, which I believe is still going strong? Thanks for the help.
Jay