I have no problem using pre-frag ammo. I am not a believer in deep penetration because everything I want to hit is within 6" to 8" of the surface of a human body. I originally used Glaser Safety Slugs (blue) and have copies of x-ray prints of Glaser hits on bodies. The wound tracks are impressive. I switched to MagSafe as they are much more accurate than the Glaser in my guns. Recently I have become interested in RBCD ammo, very impressive stuff, and is considerably less expensive than MagSafes. Better penetration through intermediate barriers, though we should not concern ourselves with that too much. I do not recommend any 'special' ammo for on duty LEO use, but for the types of encounters we would find ourselves in this stuff is good.
These are RBCD loads found at
http://www.rbcd.net/
and you should see the LEO stuff!! This is all loaded to industry standard pressures, the LEO versions are +P or +P+.
32 ACP 37 gr. TFSP 1815 fps / 271 flbs
380 ACP 50 gr. TFSP 1500 fps / 283 flbs
9mm 60 gr. TFSP 2010 fps / 539 flbs
357 Sig. 60 gr. TFSP 2410 fps / 774 flbs
38 Spl. 60 gr. TFSP 1705 fps / 385 flbs
357 Mag. 60 gr. TFSP 1975 fps / 520 flbs
40 SW 77 gr. TFSP 2100 fps / 754 flbs
10mm 77 gr. TFSP 2420 fps / 1015 flbs
45 ACP 90 gr. TFSP 2036 fps / 828 flbs
45 ACP 115 gr. TFSP 1650 fps / 700 flbs