QUOTE (lal357 @ November 8th 2009 6:33 PM)

i already chamber guage and chrono my reloads and have paper manuals as well as online manuals. but sometimes i run across a powder that is not listed for certain load and might want to see what pressures it would/might generated for instance loaded up some 168gr 308's and wanted to use imr4350 and had porblem finding a load for it . found some on a site that listed 165-168 and 175-180 gr but when i looked and the bullets no were 168 all were 165 gr. and the other listed both 175-180 charges so i ended up starting in the low/middle of the 165/168 chart .to me if you put data out for a 168gr. list it with 168gr bullets becuase some people new to reloading might just start high and be over pressure with thier gun. 3 grains might not be much but as you know a 168gr head can and will be of a few grains thats why i sort my heads into groups 3 gr + head off 2 grains now your using max charge for a 170 grain bullet .
sorry for the long post ya'll and hope it makes sense
Those multiweight range manuals can be a tad trying. I have some old ones setting around that I use when I hit an "old" "new" powder. 4350 has been around forever. 168 data ought to be easy to find. My Nosler and Sierra list specific 168 grain loads with that powder.
I agree that many starting loaders want to go firewall right off the bat and that is where we get those spectacular pictures of steel failure at times. Educational for them and us!! LOL
Greg