MtnMan wrote:correction- the bullets used are the speer 40gr spire point #1017, not #1810.
at reduced velocity this bullet isn't expanding at all! I even happened to find one in the dirt bank behind my targets and it was completely intact with no expansion whatsoever.
I tried 5 rounds this afternoon with 20gr of AR2206H. accuracy was better and the point of impact is the same as my 50gr bullet full power loads. little louder but tolerable. I'll see what the terminal performance is like now.
If you want expansion you need a very light jacket, and a terminal velocity above about 1600fps.
Any bullet offered in a factory WMR load should perform the same at WMR velocities.