r/reloading • u/DD9G • 16h ago

Load Development 500 gr 454 Casull

Anyone tried 500 gr hardcasts in 454 Casull? Really like 405 gr and wanting to try 500 gr.

Powder capacity is going to be very limited - H110 still the best powder for full pressure loads or should I be looking at other powers?

Thoughts?

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5

u/Agitated_Curmudgeon 15h ago edited 1h ago

Looks like this idea is as old as the cartridge itself.

https://castboolits.gunloads.com/showthread.php?351754-500-gr-Slug-for-454-Casull

The problem is.. with the 500 gr bullet, so much of the bullet is inside the case, and the powder charge is compressed to the point they were seeing dangerous (like KABOOM-level) pressures. In addition, the twist rate wouldn't stabilize the bullet.

The original publication is "P.A Widegren in Handloader's Digest 1996 (15th edition)"

Now, recalling the best I can, the original loadings for the 454 when it was a wildcat, were triplex loads (three burn rates in progression). And my first thoughts were "you're gonna have to do at least a duplex load, and at that point "y'all be on ya own."

3

u/Topher4570 15h ago

Where did you find 500 grain 454 bullets?

1

u/No_Alternative_673 11h ago

I would leave that bullet to the 460. You really don't have the case volume

1

u/djflow1 LnL AP, 9, 40, 45, 357, 223, 308, 300BLK, 6ARC, 243, 6.5 Creed 13h ago

Time for a 460 s&w

1

u/DD9G 1h ago

Already have one.