Back in the very early 50s, Norma introduced a 139 gr 6.5 match grade bullet.
It was introduced to U S shooters at the Camp Perry matches.
Shortly after a 1000 yd target shooter by name of Wright created a reamer using a standard 300 Wby case necked to 6.5 intending to use it for 1000 yd competition.
Word spread to a PA. gunsmith by name of Alex Hoyer of Lewistown PA.
He borrowed the reamer from Wright and commenced to build long range hunting rifles with it.
The cartridge was named 6.5x300 WWH for Wetherby Wright Hoyer.
For a number of years it was the most popular long range cartridge on the planet, and especially in PA.
However, a man by name of Joyce changed all of that when he introduced the Hornady 162 gr 7mm BTHP bullet with a BC of .725 in about 1970.
Hunters were quick to rebarrel their guns for the 7x300 WBY cartridge.
Especially since the 6.5 Norma bullet was illeagle to use in PA for hunting, since its jacket was made of steel.
The 7x300 is as simple as running a standard 300 WBY case thru a 7 mm die and seating the bullet.
Dies did soon become available from RCBS however.
Today in PA that cartridge along with most other of the smaller diameter cartridges has become less popular due the larger ones in 30 cal. and 338.
But the 7x300 WBY is still among the better of the 7mm cartridges.
With 78 gr of 7828 with the 162 gr bullet in my guns having 9 twist barrels, about 3400 fps is achieved with barrels of 27" in length.
A 30" barrel is the same.
So for a hunter, looking for a more potent 7 mm cartridge, dont overlook the 7x300 Weatherby.
