Hi Jay
do not have 6,5x57 but have 7x57R on my drilling what should be similar. Have taken some year ago moose bull on 100yrds with chest shot...went down same place where was hit but used brenneke 154gr bullet...I think 130gr Accubond is just fine for WT
RWS offer not only 128gr but also 108gr...look below.
http://www.rws-munition.de/en/produ...llets/ks/artikel/rws-65-x-57-ks-70g.html
Good hunt