fillae - your gun will most likely show a preference (accuracy) for certain factory loads, regardless of who manufactures them. if i am not mistaken, all factory cartridges are manufactured to SAMI specifications, so the one made by federal will fit a remington firearm, same for win, sako, etc. you particular rifle may show a preference (accurate)for federal or rem, or win manufactured cartridges. the only way you can be sure is to purchase a few different brands, with the type bullets you want, and shoot them out of YOUR rifle. it takes some time, and some money, but you can find the cartridge/bullet that shoot best from your gun. good luck.