If Bill Jordan were working today, he would be running and likely doing any exhibition shooting he did with an H&K P2000 semi-auto pistol.
If Jelly Bryce were working today, he would probably be running a Glock or Sig or something else off of a department’s approved gun list.
And I’d bet that they both would be carrying modern semi-auto pistols when they carried off-duty as well.
They would be doing that because neither one of them is stupid or clueless and both of them would recognize that–outside of requirements of their various agencies–semi-auto handguns of today, striker-fired or not, are superior as fighting guns to revolvers.
They would use much the same techniques, they would put in the time and the practice, and they would still be some of the fastest and most accurate shooters in the world. But they would not remain locked in the past in their choice of weapons.
In their time, they used what was issued and what was the best thing they could find. They would do the same thing if they were alive and working today.
We should all be willing to follow their example in this the way we follow the example they set in other things.