Strange zgunbear,, I've been shooting the Wolf classic 62 gr sp for a long time and never had any keyhole issues,,, weird!! I Never did like 55 gr anything much, but occasionally use it, mostly LC. Iv'e got a Bushmaster XM 1in 9 twist and a Zastava bolt 223 twist??? and it shoots good outa both, not as good as my reloads but no keyholes and acceptible accuraccy for cheap ammo, well relitivly speaking,,,, cheap. Holding 1-1 1/2 groups @ 100 m with the occasional flyer, but only slight flyers at that.
Which flavor of Wolf you useing so I can avoid it?? Black box, white box , Performance ???? I know brown bear had some issues, but never heard of issues with wolf before.