Bullet make up, may be the issue, although they have a plastic tip, the jacket could be thicker, and the core harder, It could be a game round rather than varmint,
check out the details of the bullet maker, for a detailed explanation of what the round was desgned for, rather than listen to a dealer,
As 90 percent of the time they know fook all,
there are a few good guys out there who offer sound advice in shops but they are few and far between, most just look for the pound signs....
Snap.