The old 180 gr. Remington Core-Lokts were the most accurate loads I found for my 99. Every guns different though. They hit like a sledgehammer and deer don't run away.
Yup. The 180s hit hard and take game down fast. Anything heavier in .300 Savage doesn't make sense. The somewhat small case of the .300 Savage can't contain enough go juice to push a heavier bullet fast enough to make it hit harder than the 180.
