Thanks all!!

A 505 boltface is shown below(haven't recieved my rifle yet)---
not much to surround the cartridge base but mine will operate at Double pressures!!! Not needed but the max load can be a 600 grainer at 2500 fps-Ouch!! Think I will go for 600 gr Woodleighs at around 2200-plenty enough for most any DG if I do my part!

From what I read feeding and ejection are sometimes issues--we'll see--