http://www.adi-powders.com.au/handloaders/equivalents.asp

Cheers GG, thanks for the info. It would seem I'm on the right track with IMR4350
The propellant chart equiv in the link shows.

Incidentally kuduae, I just checked the load & feed of my rounds through magazine to chamber & all have loaded into mag & cycled perfectly.
These are 160gn RN Hornady Interlock & new Norma brass. with my OAL variable between 2.943" & 2.948"...variation due to exposed lead point. The ogive measurement is 2.719" +/- .001" over 20 rds.

The factory 159gn RN RWS rounds I have measure: 2.9745" OAL +/- .004" & ogive 2.683" +/- .003"
Cheers, d