Around 1988 I had a friends Hornady Reloading Manual circa 1973. I searched the ballistics tables for the flattest round to 500 yards.
The 87 and 100gr SP out of the 257 Wby are the two flattest rounds in the book. Nothing, including the Swift are in its league.
Had one built out of a BDL 25-06 back then with a Burris Signature 3-12 on it. The coyotes on the SD reservations hated that gun.
