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Posted: 4/15/2016 4:07:50 AM EDT
GTG ?
Link Posted: 4/15/2016 6:44:39 AM EDT
You didn't even attempt to look for any threads already talking about this did you?
Link Posted: 4/16/2016 5:00:43 PM EDT
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Quoted:
You didn't even attempt to look for any threads already talking about this did you?
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He is asking about 55 gr.

The 64 and 75 have many current reviews here in this thread and on You Tube but I am not seeing much on the 55 either (was $9.99/20 with free ship PSA recently):



http://www.ar15.com/ammo/project/Self_Defense_Ammo_FAQ/index.htm

http://www.ar15.com/forums/t_3_16/688331_Speer_LE_64_Grain_Gold_Dot___Velocity__Accuracy_and_Terminal_Ballistics.html

http://www.ar15.com/forums/t_3_16/692071_64gr_Gold_Dot_with_no_primer_sealant.html

http://www.ar15.com/forums/t_3_16/691421_75_Grain_Gold_Dot___Any_Info_.html

http://www.ar15.com/forums/t_3_16/691585_Gold_Dot_75_Grain_Nickel_Case.html

http://www.ar15.com/forums/t_3_16/693784_Speer_Gold_Dot__223__64gr_or_75gr_.html
Link Posted: 4/18/2016 4:32:33 PM EDT
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Quoted:
You didn't even attempt to look for any threads already talking about this did you?
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Yes I did but the search engine here is very limited and I used "55 grain"

Searched the web also, see below - I wanted independent data

55 gr GD data
Link Posted: 4/18/2016 4:49:37 PM EDT
I have about 600rds of this...good stuff.  Accurate.  
Link Posted: 4/21/2016 1:18:32 PM EDT
It expands to upwards of .50" and meets the FBI penetration standards of 12" in bare gel and through heavy clothing (penetration around 14"). It also performs decently through drywall, plywood and even steel. The one barrier this load struggles with is safety glass. I recall it only achieves about 7.5" of penetration in gel after passing through safety glass. It should more than suffice for home defense or hunting smaller whitetail deer. But if I were an LEO working patrol, I'd probably prefer the 64 grain version of the load just because it performs better through glass, a type of barrier which patrol officers will find to be common when dealing with people inside vehicles.
Link Posted: 4/21/2016 2:27:18 PM EDT
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Quoted:
It expands to upwards of .50" and meets the FBI penetration standards of 12" in bare gel and through heavy clothing (penetration around 14"). It also performs decently through drywall, plywood and even steel. The one barrier this load struggles with is safety glass. I recall it only achieves about 7.5" of penetration in gel after passing through safety glass. It should more than suffice for home defense or hunting smaller whitetail deer. But if I were an LEO working patrol, I'd probably prefer the 64 grain version of the load just because it performs better through glass, a type of barrier which patrol officers will find to be common when dealing with people inside vehicles.
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Quoted:
It expands to upwards of .50" and meets the FBI penetration standards of 12" in bare gel and through heavy clothing (penetration around 14"). It also performs decently through drywall, plywood and even steel. The one barrier this load struggles with is safety glass. I recall it only achieves about 7.5" of penetration in gel after passing through safety glass. It should more than suffice for home defense or hunting smaller whitetail deer. But if I were an LEO working patrol, I'd probably prefer the 64 grain version of the load just because it performs better through glass, a type of barrier which patrol officers will find to be common when dealing with people inside vehicles.


Yes, the manufacturer's test of the 5.56 pressure 55 grain Gold Dot as shown in their LE Rifle Data Book shows rather unimpressive autoglass results. DocGKR however has reported some better results in other ATK testing (perhaps for ICE/DHS considering the barrel length?):

5.56mm Speer 55 grain Gold Dot JSP projectile from a 10” Barrel at 2740 fps:
Auto Glass: Pen = 11.8”, RD = 0.40", RW = 55%
http://farm7.static.flickr.com/6096/6231758538_be4cd652eb_b.jpg


His testing of the .223 64 Grain Gold Dot out of a 16 inch barrel does show superior autoglass performance:

From the Ammo FAQ
.223 Speer 64 gr JSP Gold Dot, vel=2549 fps from a 16" 1/7
Auto Glass: Pen = 16.5"  Neck= 0cm Max Tx Diameter=8cm @7.5cm (0-16cm) RD =0.44" RL=0.33" RW= 35.5gr
Link Posted: 4/21/2016 2:27:21 PM EDT
I know this is a tech forum and I don't have anything to add other than, DANG it's good to see you Charging Handle....   It feels nice to see an old name around here.
Link Posted: 4/21/2016 7:52:25 PM EDT
Does anyone have a REALISTIC muzzle velocity for this load?
Speer lists their velocity as 3240 from a 24 inch barrel.  No patrol/home defense carbine that i know of uses that long of a barrel.
Link Posted: 4/21/2016 8:37:48 PM EDT
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Quoted:
Does anyone have a REALISTIC muzzle velocity for this load?
Speer lists their velocity as 3240 from a 24 inch barrel.  No patrol/home defense carbine that i know of uses that long of a barrel.
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Here is a ton of info on the 64gr gold dot,this should give you a pretty good idea of what velocity you will get

http://www.ar15.com/forums/t_3_16/688331_Speer_LE_64_Grain_Gold_Dot___Velocity__Accuracy_and_Terminal_Ballistics.html
Link Posted: 4/21/2016 8:54:08 PM EDT
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Quoted:
Does anyone have a REALISTIC muzzle velocity for this load?
Speer lists their velocity as 3240 from a 24 inch barrel.  No patrol/home defense carbine that i know of uses that long of a barrel.
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Odd as it seems, 24" is, IIRC, the industry standard length barrel for test barrels.
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