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300 weatherby mag loads.
peppersac
Member Posts: 90 ✭✭
Do anyone have any good load data for a 300 weatherby mag. My uncle gave me his dies and shells and wants me to reload them for him. He wants failsafe bullets also and I am haveing a hard time finding them. Thanks in advance for everyones help.
Comments
84.5gr RL22
Federal 215 primer
180 gr barnes xlc bullet
3200 fps
This is a MAX laod
Reduce by 10% and work up slowly and watch for pressure signs
You're having a hard time finding the Fail Safe bullets because they've been discontinued by the Winchester/Nosler consortium. They were marketed under the name Combined Technologies. Some of the supply houses have various weights and calibers but I haven't seen a complete selection for a while. So unless a store has some put away some place, your father will have to make a new selection.
Your best bet for reloading any cartridge is to get some reloading manuals and read them. Nosler, the actual maker of the CT bullets, has their own reloading manual. There is also a ton of reloading information on the Internet for the .300 Weatherby Mag. You have to decide which bullet you want to use first.
Best.
With the suggested load above of 84.5, 10% of that would be be 76 grains.
Pressure signs are signs that the internal pressures caused by the small explosion of the primer, and the ignition of the powder are starting to overwhelm the case. Signs are many but a few are: Flattened primers, After firing shell extraction can be hard, Stuck bolts, A black dirty ring around the primer. There are alot. If your not sure still. Refer to your reloading manual. I think all of them show pictures of Pressure Signs. Good luck.
PS RL33 is a great powder for large magnums such as the 300 Weatherby with 180 grain bullets.
I have found that both of the ones I have had liked slower powder like RL22,IMR 7828,Norma MRP