Speer Law Enforcement .223 55 gr Gold Dot JSP (GDSP). Speer number 24446.
The jacket is not bonded, but molecularly-fused, allowing terminal
performance comparable to the more costly bonded bullets. You get
exceptional performance at a reasonable price. The process of joining
the jacket and core one molecule at a time eliminates the potential for
the leading cause of bullet failure-jacket/core separation. It also
ensures impressive weight retention through barriers as tough as
It is an excellent all-around
.223 cartridge combining accuracy with barrier penetration. It will
function perfectly in AR15s chambered for 5.56mm as well as those that
are chambered only for .223 Rem. Like the 62 grain cartridges, the 55 grain cartridge will perform well in barrels with a rifling twist rate of 1:7 and 1:9. Unlike the 62 grain cartridges, it will also perform well in barrels with a 1:12 twist. That is why this round is suitable for agencies that use with a wide variety of .223 rifles and carbines.
"The U.S. Army Wound Ballistic Research Laboratory conducted terminal
performance testing using 5.56 mm 55 gr M193 FMJ ammunition fired in 20”
barrels of 1/14, 1/12, 1/9, and 1/7 twist rates. No difference in
terminal performance was noted between shots made with the different
twists. Similar testing was conducted with 5.56 mm 62 gr M855 FMJ
ammunition fired in 1/9 and 1/7 twist barrels. Again, no difference in
terminal performance was noted."
Dr. Gary Roberts
Compatible with rifles that have a free floating firing pin.
Clean-burning, low-flash, fast-burning propellant boosts velocity
through 16- to 20-inch barrels.
Federal® made brass case features a harder case head for
exceptional primer retention.
Military-style colored iris gives visual confirmation of proper case
boat-tail profile: For improved accuracy.
jacket: Totally eliminates component separation, unlike other
conventional methods. Fused around a pressure-formed core.
tip: Internally skived bullet for consistent long-range expansion.
- Case of 500 rounds - 25 boxes of 20 rounds
100 y: 2782
200 y: 2383
300 y: 2019
400 y: 1692
500 Y: 1409
Energy in foot pounds:
100 y: 945
200 y: 694
300 y: 498
400 y: 350
"Apparently the 55gr stuff is loaded hot compared
to other weights of gold dot. This is because homeland security was a
huge buyer of the 24446 loading,and spec'ed a velocity very near 5.56." Pistol-forum.com
"If running 1/12 twist barrels, stick with the BH 50 gr TSX, Fed 55 gr
TBBC, Fed 55 gr TSX, Horn 55 gr GMX, or
Speer 55 gr Gold Dot." Dr. Gary Roberts
For M16A1's with 1/12 twist barrels, stick with the Fed 55 gr TBBC
(LE223T1), BH 50 gr TSX,
Speer 55 gr Gold Dot, or Fed 55 gr TSX (T223S). Dr. Gary Roberts
"My Department mandates 55 grain ammo because we still have some military
surplus M16-A1 rifles on the street plus several hundred Armalite,
Bushmaster and RRA with 16" 1:9 twist barrels. Our Department issued
Federal 55 grain bonded soft points and before that non bonded 55 grain
JSP WW. We used 55 grain FMJ for training."
"The 55gr GDSP (24446) has been duty ammo here for a couple of years now,
with several gel shoots and bunches of deer slain. I like what I've
seen and it does well in the guns, which are almost exclusively 1/7
Speer #24446 (.223 Gold Dot, 55gr) Testing
223 Remington Speer Gold Dot 55 Grain GDSP AR Pistol Clear Gel Test