I bought some 150 grain Accubonds at the Pro Shop last week and loaded them for my .300 RUM @ about 3500 fps. Anyway the guy at the desk told me if I was shooting this bullet in this caliber, he wouldn't recommend shooting at an antelope if it was closer than 100 yards. This made me a little nervous so I decided to try a penetration test. Real high tech newspaper test. I comressed newspaper down to 24" and shot from 50 yds away. It blew the paper back 3' and penetrated about 2/3rds thru, cutting a hole 3'' wide. The bullet weighed 87.3 grains and looked like a Chinese throwing star when I removed it. Should I worry about penetration on an antelope? I really like this load and bullet with 5 shots @ 100 yds all touching, so I don't want to change it.