Roy, this is a 6.5 160 gr bullet, it has taken some serious velocity but it's overly rugged. The 165 .277 bullet won't hack it in the AM I think I somehow deleted your address if you pm it to me again I will send you a rugged 170 gr matrix that should do well in you AM.
"Pain is weakness leaving your body"
The softer hollow jacket tip stretching more prior to tearing/shredding? Is that the suspicion?
If so, then annealing the void jacket tips down a little further prior to seating the lead core in your custom SXR bullets would assist in further bullet mass retention.
I think this holds true for the hollow points but is different with my bullets because the lead is flush with the tip. I think the softer tip on the HP makes it more malleable and doesn't have a feast or famine affect. Whether this is good or bad probably depends on who you talk to and what game you are shooting, but I think it does make the bullet less explosive, even though it expands a little easier. This may be more important for the smaller diameters than the larger ones?......Rich