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Old 11-30-2012, 23:21   #1
Kwesi
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Pls. Share Your Favorite 10mm Load: 180gr FMJ

Please be specific on your data as I do not have a place to currently set up my chrono. The three main powders I've been using are:

Power Pistol
Longshot
Blue Dot

I just picked up a # of V-V3n37. I'll be using a 4.75" barrel:

EAA Witness Limited
G20
Delta Elite

I use PD 180gr FMJ and have chrono'd these loads so far:

PP
8.6gr
1.250-1.255 OAL
Win LPP
Starline brass (not virgin)
Ave 1196

LS
8.5gr
1.258 OAL
Win LPP
Starline brass (not virgin)
Ave 1180

BD
10.2-10.6 (does not meter as well)
1.255-1.258 OAL
Win LPP
Starline brass (not virgin)
Ave ???? ( did not have my chrono set up )

I'm looking for 1200 - 1300 FPS but NOT limited to these powders. I have not yet loaded any Vihta Vuori
(so expensive). Thanks for sharing and please keep them for 180gr jacketed.
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Old 12-01-2012, 00:34   #2
RDub01
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Hi
I tested 3N37 with Speer 180gr TMJs in a factory G20-SF. COL 1.26"
Worked up to 9.6grs within maximum pressures, but 10.0grs gave me smileys.
9.3grs at 1180fps was the most accurate in my gun.

If you are looking for more velocity you might want to try 3N38 instead.
I worked up to 11.6grs at 1240 fps. Pressure was right at the ragged edge at 49°F

With N-105 the 180gr Speer maxed out at 12.0grs at 1240 fps

Using Power Pistol I worked up to 9.0grs with the 180gr Speer at 1197 fps. 8.8grs was a bit more accurate at 1178 fps

Jury is still out with Blue Dot.. I'm finding out how much velocity can vary with different primers.

Hope this helps a little..

Last edited by RDub01; 12-01-2012 at 00:35..
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Old 12-01-2012, 10:10   #3
Kwesi
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Quote:
Originally Posted by RDub01 View Post
Hi
I tested 3N37 with Speer 180gr TMJs in a factory G20-SF. COL 1.26"
Worked up to 9.6grs within maximum pressures, but 10.0grs gave me smileys.
9.3grs at 1180fps was the most accurate in my gun.

If you are looking for more velocity you might want to try 3N38 instead.
I worked up to 11.6grs at 1240 fps. Pressure was right at the ragged edge at 49°F

With N-105 the 180gr Speer maxed out at 12.0grs at 1240 fps

Using Power Pistol I worked up to 9.0grs with the 180gr Speer at 1197 fps. 8.8grs was a bit more accurate at 1178 fps.
I received a copy of the V-V Reloading Guide | Edition 10. I assume you are aware that your loads are way above their max loads. Ex. N105 listed max is 9.9 gr. @ 1280 FPS (5 1/2" barrel). 3N37: max 7.2 @ 1147. These are with Speer 180 HP.

A buddy suggested 3N37 but the N105 looks to be better for what I'm after. Haven't had a chance to cross check the above in my reloading books. Thanks for sharing.

Please keep them coming!

Last edited by Kwesi; 12-01-2012 at 10:53..
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Old 12-01-2012, 11:20   #4
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Quote:
Originally Posted by Kwesi View Post
I received a copy of the V-V Reloading Guide | Edition 10. I assume you are aware that your loads are way above their max loads. Ex. N105 listed max is 9.9 gr. @ 1280 FPS (5 1/2" barrel). 3N37: max 7.2 @ 1147. These are with Speer 180 HP.

A buddy suggested 3N37 but the N105 looks to be better for what I'm after. Haven't had a chance to cross check the above in my reloading books. Thanks for sharing.

Please keep them coming!
Yes, I don't know what it is about V_V's "maximum" loads, but something is a little off.. But you will discover this as you chrongraph and work with these V-V powders.

Here is my case expansion data.. ;


3N37;
Got a verynice group with 9.3grs. It looks like 9.3 is right at the ragged edge withpressure.
Also, 9.3grscome very close to duplicating the Winchester 175gr ST load which is loadedwith 9.3grs of something.
http://www.handgunforum.net/range-report/31846-new-glock-20sf-win-175gr-st-report.html
10.0grs is Speer’s maximum load but it is way too hot for this gun.
8.7grs- 1113fps .4336, .4327, .4332, .4335, .4339 (#1)
( The V-V #10 manual lists 7.2grs as "maximum". This would hardly produce maximum case expansion.. which is somewhere around .4345"with Starline cases)

9.0grs- 1149fps .4341, .4333, .4339, (lost two cases) (#2)
9.3grs- 1187fps .4342, .4337, .4341, .4340, .4337 (#3)
9.5grs- 1195fps .4345, .4343, .4338, .4344 (lost one) (#5)
10.0grs-1239 fps Smileys.. too hot. (#6)

3N38
11.3grs is about max in this gun, maybe a bit less in warmerweather.
I had an erroneous chrono reading on the 11.3gr string thatI didn’t catch, which screwed up the average, but I recall seeing velocities inthe low 1200’s

10.4grs 1103fps minimal expansion
10.7grs 1138fps .4335,.4335, .4335, .4330, .4336
11.0grs 1167fps .4339, .4335, .4336, .4337, .4336
11.3grs 1200fps .4340,.4338, .4339, .4340, .4342
11.6grs 1240fps .4339,.4346, .SMILEY, .4345, .4339

N-105
11.1grs was somewhat compressed with the Speer 180 TMJ and12.0grs was even more so. N-105 is anextruded powder and it doesn’t meter as well as some others.

11.7grs is as far as I want to go here.. 12.0grs gave head expansion larger than I want to go.

Both 3N38 and N-105 maxed out at about 1200 fps in the factory barrel.
( 9.9grs would not produce maximum case expansion)

11.1grs 1153fps .4334,.4334, .4332, .4340, .4330
11.4grs 1183fps .4336,.4337, .4339, .4332, .4335
11.7grs 1215fps .4336,.4344, .4340, .4336, .4341
12.0grs 1240 fps .4342,.4346, .4344, .4345, .4336

Last edited by RDub01; 12-01-2012 at 11:39..
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Old 12-01-2012, 14:26   #5
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RDub01: thanks for the detailed data!
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Old 12-01-2012, 17:23   #6
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Quote:
Originally Posted by Kwesi View Post
RDub01: thanks for the detailed data!
Welcome..
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Old 12-01-2012, 18:19   #7
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I tested this one after the pull downs, which I posted over at 10mmFirearms site. First Commercially loaded ammo I saw using the Blue Dot powder...

Cartridge is from Ammo Manufacture: Right 2 Bear Ammo LTD. RTBA 180gr FMJ
Ballistics Information: 10mm Auto
Muzzle Velocity: 1300 fps
Muzzle Energy: 675 ft. lbs
Pictures: Before/After disassembly:
Brass Make/Headstamp: Star Line - Brass
Bullet Make/Weight/Construction/Info; Length 0.5975"/Dia. 0.400": ? copper jacket lead exposed on the base 180gr. FMJ actual weight 180.4 grains
C.O.A.L.: 1.2510"
Primer: Nickel color
Case: Diameter 0.4215" Crimp Diameter 0.4215" Length 0.9880"
Powder Description/Positive ID/Type/Charge Weight: Blue Dot 10.8 grains
Tested 11/29/2012 RTB-Right 2 Bear Ammo LTD 180 Gr. FMJ 1198 fps : Diameter 0.4275" primer slightly flatten
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Old 12-01-2012, 20:59   #8
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Thanks Shadow!
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Old 12-02-2012, 08:10   #9
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Kwesi, my favorite on the 180gr weight class is LS 9.0gr with magnum primer CCI 350. It goes 1350fps, more accurate than me. Since LS meters well, this is a good combination for me.


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Old 12-02-2012, 08:45   #10
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Quote:
Originally Posted by ModGlock17 View Post
Kwesi, my favorite on the 180gr weight class is LS 9.0gr with magnum primer CCI 350. It goes 1350fps, more accurate than me. Since LS meters well, this is a good combination
I've never loaded a magnum primer. I have found Win LPP's are hotter than other brands by about +30 FPS. I recently loaded up 100 with 8.9-9.0 gr. LS but have not tested. Thanks for sharing. Which bullet, barrel length and OAL?
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Old 12-02-2012, 21:58   #11
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Quote:
Originally Posted by Kwesi View Post
I've never loaded a magnum primer. I have found Win LPP's are hotter than other brands by about +30 FPS. I recently loaded up 100 with 8.9-9.0 gr. LS but have not tested. Thanks for sharing. Which bullet, barrel length and OAL?
They were 180gr XTP, Nosler 180gr JHP, and Winchester 175gr SilverTip (but not tested, pricey at $.40 each bullet).

My G20 is always 6" KKM.

OAL 1.255" +/- .002 I really don't think we have any other OAL that is usable for reliable G20 operation... may be I am wrong.

Quick data at http://www.glocktalk.com/forums/show....php?t=1452494

I'd be interested in your 9.0gr LS with WLP primers.

Here's my background story: I just got Lee LoadMaster progressive reloader. One of their recommendations is to stick to CCI primers because it's least likely to go off if jammed. I did crush a primer while setting it up, totally my fault for not pushing the level through the entire cycle but went partial and got distracted by another issue. Other more sensitive primer could have awaken me up...

Last edited by ModGlock17; 12-02-2012 at 22:01..
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Old 12-02-2012, 22:08   #12
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FWIW...

I try to settle down on powder variety. One for Rifle. One for heavy 10mm, and one for light 10mm like a 135gr. Or dump the 135gr, just to have two powders.

Keep life really simple.

There are days that everything seems to go wrong, distracting cell phone, you get called, door bell rings, etc. while you are reloading. When things are really bad, you could be using BD grainage for LS powder, if you know what I mean. Keep life really simple.
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Old 12-02-2012, 23:14   #13
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Originally Posted by ModGlock17 View Post
FWIW...

I try to settle down on powder variety. One for Rifle. One for heavy 10mm, and one for light 10mm like a 135gr. Or dump the 135gr, just to have two powders.

Keep life really simple.

There are days that everything seems to go wrong, distracting cell phone, you get called, door bell rings, etc. while you are reloading. When things are really bad, you could be using BD grainage for LS powder, if you know what I mean. Keep life really simple.
Thanks for the updates. I hear ya regarding the distractions and keeping it simple. For a long time I only used Power Pistol for 9mm, 10mm and 45 ACP. It works great in my pistols and in various full auto's. I decided to go back to BD and LS along with PP for variety. Then I picked up a # of V-V 3n37 at the suggestion of a good buddy. I plan to eventually load 45 Win Mag and the 3n37 looks like a good choice. I don't have the ability to set up my chrono these days.
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