I loaded some sierra 130gr. boattails for hunting a couple of years ago, light loads, don't remember how much powder, (i think 52gr?) have it written down in logbook, but not here. Used in a savage 110 in 270. this was when i first got into reloading, and they were pretty accurate, anyway when i was hunting, I shot a big doe at about 90 yards, she didn't even flinch. I was pretty sure i made a good shot but never found any blood. i looked for about an hour then decided i missed. found her the next day just beyond where i gave up. she had been shot through the heart. next day shot smaller buck, again no flinch, through lungs, saw him drop after normal 100 yard run. anybody have similar problems with these bullets or explanation, still have about 50 bullets left to use.