I use 9 grains of 4227 under a 45-grain soft point bullet lit off by a WW small pistol primer in my Zastava 22 Hornet. This load gets me an inch or slightly less at 100 yds(my fault not the rifles). Yesterday I was shooting some loads that had been loaded for at least five years and they were all shooting at least a foot low. I checked the scope and rings all were tight, Could that powder have degraded that much?
Or do I have another problem?
