I am in need of some loading data for my .300 weatherby ma. It is a .300 wby mag in the Weatherby Ultra Light weight 26" barrel. I am trying to work up the 180 gr scirocco or the accubond. Ok looking forward to reading the replies. Good Hunting.
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Jeff
Monarch Outdoor Adventures (. com)
I, am using IMR 7828[ 83.5gr] of powder, Fed 215 primers ,180gr accubond I am also seating the bullet so it just clears the magazine.This load shoots 1/2" 3 shot groop at a 100 yards. My son shoot a 240lb- 10pt buck last week ,at 140 yards and this load and it, slamed it.
One of the best powders for Weatherby Calibers is Norma powders, but no one sells them in the US that I know of. Go to www.norma.cc for data just for the heck of it. Good luck.
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PROUD HUNTERS KILL THEIR GAME THEY DON'T HARVRST THEM!!
IMR 7828 seems to be THE powder for the .300 Weatherby when using 180 grain bullets. In my .300 Wby Sako I've used several 180 gr. bullets, including the two you mentioned, and IMR 7828 just seems to work with everything. That's not to say that other powders won't work too, but 7828 gives me the best accuracy and velocity on a consistent basis with 180 gr. bullets.
Here's a favorite load:
84 grs. IMR 7828
Fed 215M primer
Norma brass
180 gr. Swift Scirocco
OAL - as long as the magazine will allow, about 3.65"
Recently, however I've started using the 168 gr. Barnes Triple Shock almost exlusively because I like the bullet construction better and I've had good luck with RL22 as well as 7828. 84 grs. of RL22 gives me about 3340 fps and accuracy is very good.
.300 weatherby Mag loads needed!!!
