A lot of my shooting is done on smaller places and shots out to 200m are rare and 80-100 more the norm. Noise can be a big issue with locals. I have been tinkering with my 17H and Trailboss to see what I could do to turn it down a bit and 2000f/s is about it with one of my 17gn projectiles. More than good enough but the performance of any of the factory and home swaged offerings at 100m was mediocre at best. They shed the jacket and the cores tend to pass straight through with little disruption. Seems that the frontal x- section just does not lend itself to expanding at low speed.
I then moved to a .224" out of a 223rem as that case capacity will get a 40gn up to 2k with Trailboss. After much buggering around and finding that again performance is poor at <2K I Finally came up with a hollow pointed core in a round nose open tipped 40gn projectile. It is a bomb. Does not penetrate any more than 6" of water and just destroys itself. There seems to be a correlation between the diameter of the open tip and the depth of the hollow point (from the tip of the projectile to the base of the hollow point). Has anybody built these before? There seems to be a point where accuracy just falls off a cliff. Stability calculator said they are good and they will do a inch at 100m with a 2" drop from 50 to 100m but there is a fine line between performance and accuracy. Would be interested to hear of others trials and findings.
Bill