While he may not be able to take a shot at 300 yards he isn' t that limited. A one ounce (438 grains) slug traveling at 1800 fps is every bit as good as a magnum in line muzzle loader. Winchester also makes their Nosler Partition Gold sabot slug at 385 grains traveling at 1900 fps. These weights and velocites are right on par with most all 45-70 loads available.

I have only taken one elk that was farther than 100 yards and it was only 130 yards out there. With either of these slugs going down range I would have been comfortable taking the shot provided the gun was accurate to that distance. Elk are not that dificult to get within about 100 yards.