Search:

I haven't shot the loads but I'm using 62.6 mm OAL, If let me know what OAL you are using, barrel length and if possible case capacity of H2O I'll run a model for the 75's for you

Hmmmm - Was playing about with some scenarios for a 223 with a 24" barrel and 80 Gn sierras today. Based on Beavis thoughts above I modeled PP 2000 MR for 80 Gn's in GRT and it (the PP 2000) is...

748 would be more suitable, but still with 5% or more unburnt - thats not uncommon though!

If it is indeed the "same" as PP 2000-MR then its a bit slow for 130's in the 308 and GRT predicts your'll only be burning about 85% of the powder - won't cause any problems just a great big muzzle...

Pommy's suggested search raised this site The Ballistic Assistant which is worth a look if you're interested in propellants etc