Please advise regarding Dillon 148 gr HBWC

Please advise regarding Dillon 148 gr HBWC. I have a chance to trade some primers for 500 of these but will have to drive to meet up. These are soft swaged bullets, right (not hard cast). Anyone know what the hardness is on these particular bullets?

Also please advise on use in a 1920 2nd Issue Colt Officer's 38 Special revolver. I understand the groove diameter is a tight 0.354-0.355 and chamber is 0.359 on these revolvers. Indeed the barrel slugs tighter than my new S&W 586 but they are hard to measure with odd grooves.  These bullets are 0.357 diameter. (not 0.358).

Get these or hold out for Speer or Hornady 0.358 HBWC's?

Thanks in advance,

Les

Buy ‘em and choot  ‘em.

Those appear to be relabeled ZERO’s.
Will shoot just fine.