I have a savage mod.10 pac-nor barrel,after trying several combinations this one is by far the best.Hornady 100 gr.a-max,fed.210 match primer,41.8 grs. cfe223,I opted to buy a Lee collet die and a wilson straight line seater.This loads is zippy 3222 fps.so start low and work up.Here's the interesting part,when I got the collet die I loaded up some ammo one batch with the neck squeezed down tight the other batch I left the neck loose so I could push the bullet in,I intentionally seated the bullets long so when I chambered a round the lands seated the bullet.Went to the 530 yd range and shot both types of ammo,the tight necked one's shot ok around minute of angle,the loose necked one's put 3 round into one and three quarter inch,thought it was a fluke ,tried it again same result.this is my praire dog load,any dog within 500 yds.is toast!plus cfe223 cleans the barrel of copper,get your cake and eat it too!