375-300

[Joe Jackson]

- I'm brand new so be jentle late last year I started reloading for the wildcat ruger m77 375-300 win mag. The case size is not much smaller than the 375 H and H but can it handle the same cup presser?

 

[jpwilly]

Call Ruger...

I see 50K CUP listed in reloading data for 375 H&H as MAX and 60K PSI as MAX for the Ruger 375...So converting CUP to PSI they are nearly identical in Pressure MAX

BUT I'm not familiar with the 375-300 wildcat

I would work up handloads in typical safe way starting 10% low. I would not wan't to be shooting a 375-300 if it were to go KABOOM.