505 Gibbs project

Whya505?

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So I acquired a CZ550 that was built by GA Precision as a 500 Battleship, Apparently a Rigby cut off around the shoulder and necked for a .510 projectile. I am have that rechambered to 505 Gibbs and am looking at doing some odd ball experimenting. Does anyone know of anyone that has worked up or QL-ed 750Gr Amax in the cavernous gibbs? I have an actual .505 Barrel to thread and chamber as well that was will go on it later in life.
 
I do not as the biggest I’ve seen is the 600 grain work up. Tagging this thread to stay informed.
 

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autofire wrote on ThinAirHunter's profile.
I think forum prohibits making reference or giving personal references to PH/Outfitters that don't advertise on this forum.

But you can call me. I would be happy to discuss Cape Buffalo .

Bob 813-310-6992
MHYOUNG 375 wrote on Marley7x57's profile.
If you really are interested I 'll send some pix. I have quiet a few.
curt672 wrote on Robmill70's profile.
So What's the story on the 340 ??? thanks Curt
rdog wrote on Bob Nelson 35Whelen's profile.
Bob i was at Rebel gun works last Friday they had once fired 25/20 brass in their up stairs section , how are the knees going?
 
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