I don't know what weight of bullets that you have but if they are spire point in shape and have a little exposed lead then they are propably interlocks. They also make a plastic tip called the SST. also a round nose. They make a FMT but they should be marked as such. If you have the stock number on the box you may be able to find them on the Hornady site and find out more. Or match them up at Midway USA by syock number.