147 v. 124
When my outfit went from round guns to flat ones, the universal transition pistol was a SiG P228 and the issue load was the 9mm 147 gr JHP.
Stories began to circulate immediately and one was that the 147 JHP was never intended as a pistol ctg but was for use in suppressed sub guns, namely the MP-5. Unknown if there was truth to this or not.
What was pretty evident was that in the use of the 9mm for finishing off deer, in deer v. car MVA's and dealing with an occasional feral domestic animal, the 9mm/147 from the stubby P228 seemed weak. Sorry, the agency does not have a lot of shootings v. felons.
When the opportunity came to "upgrade" from the transitional 9mm, to either .40 or .45, a huge percentage of personnel did, mostly to .40, the old guard to .45.
The 147 ammo largely disappeared as it was shot up in quals and training, and those few that retained the 9mm switched to 115 or 124.