300 Win mag load development

[Carterhunts1205]

Greetings all ,

Waiting for license for a model 70 super grade 300 win mag.

26 inch barrel 1:10 twist.

Can anyone give me some ideas on what powder to use and any previous loads . I’m wanting to shoot a 200 gr eld x as I’d like it to be able to stretch some distance.

Was originally planning on using Somchem S335 but I’d obviously like to get a lot of energy and speed out of it , so if there’s better options please let me know . If I could get similar speeds to what the box ammo (precision hunter 200 gr ) shoots or advertises I’d be happy .

 

[Carterhunts1205]

I am also considering the bondstrike bullet and the long range accubond . The long range accubond might actually be better for the very long distances as it still expands at a much slower speed .

A fair amount of my shooting will also be under 400 yards so I’d like a bullet that holds together at those ranges , and I believe the eld x sheds weight violently and comes apart at those ranges whereas a bonded bullet might be a better option. Maybe the 190 gr option can work . Anyone have any experience with these .

 

[375 Ruger Fan]

The ELD-X is a good bullet. They tend to blow up at close range, but work quite well at longer range. The red plastic tip aids in bullet expansion and tends to overdo it at high velocities at short range. As the bullet travels out to longer distances and slows down, bullet expansion is about right.

I've developed loads with the 200 gr ELD-X for 300 WM in a Ruger with 24 inch barrel and a Browning A Bolt with a 26 inch barrel. I tried 3 different powders, Alliant 4000-MR, IMR 4831 and MagPro. IMR 4831 gave me the best results, but the other two powders also gave me acceptable results.

Personally, I think whatever combination of powder and bullet you select, the 200 gr bullets are the way to go. Most factory ammo is the 180 gr variety.

Nathan Foster in New Zealand is an excellent resource

.300 Winchester Magnum

The .300 Winchester Magnum, history, factory loads, hand loads and performance on game.

www.ballisticstudies.com

See attached article for more info