Look here http://www.nzhuntingandshooting.co.n...ss-ammo-14739/
My usual powder is ADI 2209 (aka Hodgdon H4350).
If you look up the ADI website you will find their powder equivalents listing.
http://www.adi-powders.com.au/handlo...quivalents.asp
I also have a large quantity of VVN140 so tried some of that recently. Just used the load data from the VV website.
N140, which normally gives excellent results in the other calibres I use it in was disappointing in the Swiss - poor accuracy and large ES.
I have also seen a posting somewhere with a load using 4064 and 155gr projectiles.
If you trawl around on the web you will find heaps of data on the 7.5x55 including loads.
This guy has posted a lot of data http://www.swissrifles.com/sr/pierre/data.html
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