They are swaged bullets. They are not soft, as in pure lead swaged bullets.
I like them, except for the cost and they do not give me the accuracy that other lead bullets do. I am a big fan of swaged bullets rather than cast bullets.
However, in .38 Special wadcutter loads for my S&W M52, the Remington 148gn HBWC beats all others brands I have tested hands down and they are the least expensive.
For .45 Auto, the Hornady 200gn SWC is OK, but my own cast RCBS 452-201-KT (or whatever it is) and H&G68 are much better. Precision bullets makes a Moly-Koted swaged 200gn SWC that is one of my favorite bullets.
Of the many Hornady Frontier bullets I have tried, I like the 140gn .38 caliber Cowboy bullet in 9x19 and .38 Super.