(07-04-2024, 11:10 PM)Old Bob Wrote: How do you arrive at a Node # & what are Fxn length & OBT?
Copied your spreadsheet & transferred it to Microsoft Excel. Seems to work OK. Changing any of the input numbers changed MV results.
I change the node number in order to get an achievable range for the mv goal based on reloading data.
Fxn length is the function barrel length after you take into account the cartridge … the bullet does not travel 18” in an 18” barrel … COAL for 6mm ARC is 2.260? I try calculating from the back of the bullet to the end of the barrel.
OBT optimal barrel time …. time the bullet will be in the barrel