What twist rate are you going with? I had my .358 done with a 1 in 12" so it would shoot the heavier bullets well. I shot 3 Hornady 250 gr Spirepoints into one single hole that we only about .380" edge to edge. Now that I have to use non-lead bullets here is CA, it shoots both the 225 gr and 200 gr TTSX bullets very well. I used John Barsness's loads with TAC that closely approximate .35 Whelen factory loads.
Most loading data for the .358 is kept low due to some lever actions like the Win 88 and Savage 99 being made in that chambering. A strong bolt action can go hotter. I used mine in Africa on plains game including kudu and Wildebeest.
Last edited by Calif. Hunter; 08/24/20.
