Just pick something close and adjust (the 7MM RUM is probably a good starting point).I don't see 28 Nosler as a cartridge listed.
What about starting with the 7 mm RUM and adjusting the Case length to 2.85',cartridge length to 3.556 and the case volume to 101.5 H2O?Best way is to start with 7 SAUM and update the dimensions accordingly.
In GRT, you need to change all parameters of the case and the chamber too.What about starting with the 7 mm RUM and adjusting the Case length to 2.85',cartridge length to 3.556 and the case volume to 101.5 H2O?
Which is what my 28 Nosler is when loaded with a 168 VLD hunting and 77 gr H 1000.
I just wanted to see what my max powder charge should be.
77gr right now is doing 2990-3000 fps