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Old 01-05-2010, 17:05   #1
double07gt
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Double Tap Ammo for G20 10mm.....

Okay, I've read on the board about how good the Double Tap is, so I went ahead and bought boxes of various grains. Here's what I bought.....

(50) 155 gr. Bonded Defense JHP / 1475 fps
(50) 180 gr. Bonded Defense JHP / 1305 fps
(50) 200 gr. Controlled Expansion / 1250 fps
(100) 180 gr. Full Metal Jacket Match / 1250 fps (I bought this for range ammo)

Of the choices, which do you think would serve best for:

1. Self Defense
2. Home Defense
3. Hunting Sidearm

Lastly, what would be a cheaper brand "range only" ammo to purchase and not give me headaches at the range?

Last edited by double07gt; 01-05-2010 at 17:10..
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Old 01-05-2010, 18:31   #2
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I'm interested too. I just got my Glock 20SF today and I've also been trying to figure out which double tap ammo to get.
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Old 01-05-2010, 18:38   #3
kenzo
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Make that 3 of us. Got my 20SF today also.
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Old 01-05-2010, 18:54   #4
Erich1B
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For home, self-defense, I went with Double Taps 165gr Golden Saber rounds. Listed on Double Tap's website as 10mm 165gr. Brass Jacketed. I also have Double Tap's 10mm 155gr. Barnes TAC-XP for self-home defense.

I'm not a hunter, so I can't offer an opinion about hunting rounds.
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Old 01-05-2010, 19:15   #5
4GLOCKER
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When I walk in the woods with my G29SF, I carry DT 200 gr. WFNGC Hardcast Flat Nose @ 1300fps for protection from creatures w/4 legs.
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Old 01-06-2010, 04:49   #6
.45Super-Man
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The best round for defense against 4 legged creatures will not likely be the best round for 2 legged. For hunting you want penetration more than anything else. I really like the hot 165's for the 10mm or .40 for protection against 2 legged threats.
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Old 01-06-2010, 08:37   #7
DocKWL
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I have little that is good to say about DT ammunition. My testing has shown that their velocity numbers are skewed, and performance is erratic at best. I have fired rounds from the same box which have showed signs of over pressure as well as squibs.

Hornady's 200gr. XTP will exceed all of your expectations for all three of your requirements. CorBon's 155 DPX will provide all the performance you will ever need for your first two scenarios.
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Old 01-07-2010, 09:47   #8
Sierra9
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[quote=DocKWL;14488505]I have little that is good to say about DT ammunition. My testing has shown that their velocity numbers are skewed, and performance is erratic at best. I have fired rounds from the same box which have showed signs of over pressure as well as squibs.


Do you have any specific data? Have you talked to Mike McNett?
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Old 01-07-2010, 12:59   #9
walt cowan
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[QUOTE=Sierra9;14495636]
Quote:
Originally Posted by DocKWL View Post
I have little that is good to say about DT ammunition. My testing has shown that their velocity numbers are skewed, and performance is erratic at best. I have fired rounds from the same box which have showed signs of over pressure as well as squibs.


Do you have any specific data? Have you talked to Mike McNett?
what do you use?
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Old 01-08-2010, 01:09   #10
Ak.Hiker
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For hunting go with the 200 grain XTP load. For self defense or home protection pick either the 155 or 180 grain bonded. Go with the one that you can control the best. Another thought is to go with the 180 grain for everything. Practice with the fmj and carry the bonded.
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Old 01-09-2010, 01:53   #11
mongo356
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Quote:
Originally Posted by DocKWL View Post
My testing has shown that their velocity numbers are skewed, and performance is erratic at best. I have fired rounds from the same box which have showed signs of over pressure as well as squibs.
Ditto-
Some of the fired DT cases were leaving a visable smiley on the case & you could feel the nickle had cracked w/ your finger nail. I don't care to push the edge that close. I have had real good luck with Hornady ammo though. The fired Hornady cases & my re-loads don't leave a bluge. Everyone has their own opinion but the XTP bullet is hard to beat. These are some numbers fired through my stock G20.

06-16-08
Shooting Chrony Chronograph
83 Deg/650 ft above sea level
Glock 20 4.6”bbl

Double Tap 10mm Gold Dot-165gr-
(advertised 1400fps-G20-4.6”bbl)
1390
1343
1333
1390
1355
------- 1362.2 AVG/ 57fps E/S

Double Tap 10mm Gold Dot 180gr
(advertised 1300fps-G20-4.6”bbl)
1226
1250
1220
1205
1253
------1231 AVG/ 47.45 fps E/S

Remington Factory180 TMC
(advertised 1150fps-5”bbl)
1071
1055
1053
1068
1097
-------1069 AVG/ 44.56 fps E/S

Handload 200gr XTP
Win case/WLP primer/12.3gr AA#9
1059
1063
1064
1068
1055
------1068 AVG/ 12.58 fps E/S

02-10-09 Shooting Chrony Chronograph
68 Deg/650 ft above sea level
G20 4.6” Hornady Factory 200gr XTP
(Advertised 1050fps-5”bbl)
1010
1006
1002
1005
990
------1003 AVG/ 20 fps E/S

04-01-09 Shooting Chrony Chronograph
70 Deg/650 ft above sea level
G20 4.6” Hornady Factory 180gr XTP(Advertised 1180fps-5”bbl)
1186
1180
1189
------
------
------1185 AVG/ 9 fps E/S

Last edited by mongo356; 01-09-2010 at 02:03..
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Old 01-09-2010, 13:20   #12
Sierra9
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[quote=mongo356;14508388]Ditto-
Some of the fired DT cases were leaving a visable smiley on the case & you could feel the nickle had cracked w/ your finger nail. I don't care to push the edge that close. I have had real good luck with Hornady ammo though. The fired Hornady cases & my re-loads don't leave a bluge. Everyone has their own opinion but the XTP bullet is hard to beat. These are some numbers fired through my stock G20.

According to Mike McNett, he does his chrono testing outside of Cedar City, UT, at an elevation way over 6000 ft. You're nearly at sea level. I don't pretend to know how much of a difference this makes, but it's got to be some diff.
I for one have never seen any signs of over pressure or cracking of the nickle in well over a thousand rounds of 9mm and of 10mm Double Tap, and I do check because I've been reloading the cases. And if I did see such problems, I would sure as heck talk to Mike. Have you?
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Old 01-09-2010, 15:56   #13
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Quote:
Originally Posted by Sierra9 View Post
According to Mike McNett, he does his chrono testing outside of Cedar City, UT, at an elevation way over 6000 ft. You're nearly at sea level. I don't pretend to know how much of a difference this makes, but it's got to be some diff.
I for one have never seen any signs of over pressure or cracking of the nickle in well over a thousand rounds of 9mm and of 10mm Double Tap, and I do check because I've been reloading the cases. And if I did see such problems, I would sure as heck talk to Mike. Have you?
Nope. I did try a couple of different lot#'s to see if I maybe got a bad bunch. The nickel cracking was off and on, but the giant bulge was still there, to the point I couldn't re-load them.

In the end I came to the conclusion that anything I shoot won't be able to tell the difference in a 100ft a second or so anyway...if I was cutting it that close I need to either shoot better or get a bigger gun-lol. Also I didn't want one of the bulging rounds to blow apart at the worst possible moment making a reliable gun into a paperweight, I.E. shooting at charging hog, buffalo, elephant, etc.

I believe the elevation may have a lot to do with the chrono numbers, as well as other factors, temp, instruments used etc. Keep in mind this is just my experience with the ammo not necessarily written in stone for everyone.

I decided to just go to the XTP's they have always worked good for me. Most of the time I can roll my own cheaper so I have been doing that.
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Old 01-09-2010, 16:06   #14
Iceman cHucK
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I have consistently chronoed DT at 100-150fps below advertised in many of his 10mm loads. I'm in western PA at approx 1300'.
Does anyone know how to calibrate the fps expected by altitude in say 1000' increments? Could this explain the differences many of us see. I had no idea DT was at this 6000' + altitude!
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Old 01-09-2010, 16:10   #15
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I also do not know why everyone praises DT ammunition so much. I got terrible accuracy with the ammunition that I tried, although as everyone knows a good shooting load in one gun does not mean it will shoot good in another gun, but it may mean that the ammunition has a large standard deviation. I do not know for sure as I did not chrono them.

DT ammunition is the only ammunition that has given me "guppy brass." I will not shoot ammunition that IMO is loaded to too high pressures.
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Old 01-09-2010, 18:50   #16
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[quote=mongo356;14511362]Nope. I did try a couple of different lot#'s to see if I maybe got a bad bunch. The nickel cracking was off and on, but the giant bulge was still there, to the point I couldn't re-load them.


You shoot 10mm out of a g20. I have a g29. Is there any difference in the barrel that would give you those problems and not me?
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Old 01-06-2010, 13:53   #17
walt cowan
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dt 200 grain xtp for both 2 and 4 legged problems!
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Old 01-06-2010, 18:36   #18
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I will leave the two legged critter choices out of this response, but I do a lot of handgun hunting with several calibers, unfortunately 10mm is not one of them. But I highly suggest a heavy for caliber cast lead wide noise flat point bullet, which DT loads several of them for 10mm. They punch excellent wound channels through deer. If you really had to have a jacketed hollow point for hunting, I prefer any loading with Hornady XTP bullets. They should be heavy for the caliber also, penetration is the key to successful handgun hunting.
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Old 01-06-2010, 19:30   #19
glock2740
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I like the DT 180gr Gold Dot load in my G20 and G29.
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Old 01-07-2010, 12:59   #20
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No sense going broke buying more ammuntion. From what you bought, use the 180s for all personal defense contingencies, and use the 200gr load for the woods. Try Georgia Arms for more affordable range ammo. If you have a spot in the house or apt., even if you think you'll never want to do it, (like I did), start making preparations to reload. First step is to start saving all your brass - you can always sell it on gunbroker. If $$ is an issue, go slowly, and just buy a piece here, a piece there.
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