Load Data 6.5-300 wby mag

[bushwackr]

Hello Does anyone have any load data for this round. I cannot find a dang thing. I see that weatherby is going to start selling these loaded but not for 100 a box.

[scope eye]

Just use 26 Nosler data.

Dean

[yobuck]

There never was any load data for it. Same as any other wildcat you found what works.
Most of the guys i knew who used them 40/50 years ago are now gone.
H 870 was the powder used most along with the 139 gr Norma bullet.
WC 872 is about the same stuff and the same amount would work.
I use 89 gr H870 with a 162 gr for the 7x300 Wby. and thats about max for a 700 action.
80 gr of either of those powders with a 140 gr bullet would be where id be starting.
Best to just load 1 round and try it, then 1 at a time from there till you see pressure signs.
7828 should work also as should RL 25. 80 gr 7828 with a 162 is max in my 7x300.
That powder produces the best velocity for me in the 7x300.
RL 22 and H1000 worked well in my 6.5 WSM and should also work in the weatherby case.
If Weatherby uses a barrel less than about 28" i dont think max performance will be reached with the best powders.
Thats the problem with their 30x378 also.

[scope eye]

Here are a few loads, They are only 75gr loads when the case has 100gr case capacity, that is what a 264 Winmag holds so why bother.

http://www.reloadersnest.com/frontpa...?CaliberID=342

Dean