REX powder data [Archive] - Glock Talk

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MakeMineA10mm
11-10-2010, 08:54
Please post your data for REX powders in this thread.

Here is some information about these powders gleaned from the internet:

Rex 0 = Rex Blue = Rex Azzurra = Rex 24 (similar to Bullseye and WW 231)
Rex 1 = Rex Red = Rex Rossa = Rex 28 (similar to Red Dot and Clays)
Rex 2 = Rex Yellow = Rex Gialla = Rex 32 (similar to Green Dot and International)
Rex 3 = Rex Green = Rex Verde = Rex 36 (similar to Universal)


In America, these powders are available from Graf and Sons and Powder Valley.

Rex makes other powders, but as far as I know, at this time, they are not available in America.


.

robert91922
11-10-2010, 15:18
Too bad that Rex Magnum (quite slower than Rex 3) is not available yet in USA. I found it to be great powder for compressed 10mm loads (mild or hot). Rex 3 could be useful for some mild/target loads, but got to be very careful when using heavier bullets than 165gr.
I will copy here my earlier posted data in similar thread, hoping that Rex Magnum will be available soon in US too.

robert91922
11-10-2010, 15:20
Momentaly only two brands of handgun powders can be bought In Slovenia:
Vihtavuori and Rex ( www.rexpowder.com (http://www.rexpowder.com/) )
I made some loads with VV N105 and already posted chrono data here on GT.
BUT: I found Rex Magnum gunpowder to be very useful for 10mm loading too.
I took 180gr 10mm copper plated bullets made by LOS ( www.los.si (http://www.los.si/) ), the only manufacturer of bullets here in my country and Rex Magnum gunpowder which is the slowest burning of 5 Rex gunpowders that can be bought here (Rex 0, Rex I, Rex II, Rex III and Rex Magnum). The results are very interesting, especially because of very low price for Rex comparing to Vihtavuori:
1 kg VV = 75 EUR, 1kg Rex = 30 EUR (1EUR=1.4USD)

To make it shorter, here are today's Rex Magnum 10mm data:

- Glock 20 stock barrel
- recoil spring: DPM MS Glock20 3-spring system
http://www.egun.de/market/item.php?id=2962013
- primers: CCI 300 LP
- powder: Rex Magnum
- bullets: LOS copper plated RNFP 180gr - http://www.los.si/pobakrenekrogle.html
- brass: Starline (new)
- COAL: 1.260
- temperature: 54 F (12C)

load (grains) average (fps)
11,0..............1257
11,2..............1290
11,4..............1299
11,6..............1319
11,8..............1320
12,0..............1335

At 13gr of Rex Magnum the case is almost full, this gunpowder can be compressed because of it's shape (rounded soft leaves) and still burns ok.

robert91922
11-10-2010, 15:21
- Glock 20 stock barrel
- primers: CCI LP 300
- recoil spring: DPM MS Glock20 3-spring system
- powder: Rex Magnum
- bullets: Speer GDHP 165gr
- brass: Starline and Winchester (both new)
- COAL: 1.260 and 1.265 (last 3 loads)
- temperature: 46 oF (8 oC)


load (grains) average (fps)
11,4..............1302
11,6..............1326
11,8..............1334
12,0..............1342
12,2..............1358
12,4..............1383
12,6..............1391
12,8..............1397
13,0..............1411
13,2..............1415
13,4..............1415
13,6..............1433

At 12,8 a bit more significant case bulging started, but no smileys yet. Primers were also a bit flattened.
IMO no danger for KB if you are using virgin new good cases.

robert91922
11-10-2010, 15:24
I have not seen the REX Magnum powder around, I have used REX II for a few years now and use it for most all my calibers, I have not used it with 10mm yet, I'm thinking 5.5 grains to start out with for 180 gn plated bullet. REX II has usually followed load data of Titegroup by grains, but titegroup is much smaller when you look at the volume it takes up in the case. I'll post my findings some time soon.
IMO Rex II is way too fast for heavy 10mm bullets. Maybe only for 135gr but got to be very careful, I can't give you any starting data for Rex II & 10mm. Well, I've been experimenting a year ago with Rex III but you can't get out some hot loads with it...maybe weak plinking loads only.
I can recommend only Rex Magnum. I can't see any reason for Rex M. not to be available in USA because Rex II and Rex III can already be bought there.
For mild plinking/target loads I use 10gr Rex Magnum and 180gr copper plated bullets (1200 fps)
I will try to find my data for Rex III. Anyway, Rex powders are very interesting because of their low price, clean burning and availability for making compressed loads like mine 12gr/180gr and 13gr/165gr are.

robert91922
11-12-2010, 11:52
Loaded yesterday, shot today, very fresh ammo :supergrin:
So, here's data for Rex 3 and 160gr Target bullets (nickel plated).

- Glock 20 stock barrel
- primers: CCI 300 Large Pistol
- recoil spring: DPM MS 3-spring system for Glock 20/21
- powder: Rex 3 alias Rex Green
- bullets: Target 160gr nickel plated
details: product "cod TM4Platinum/400" at http://www.targetbullets.it/platinum-teb-bullets_709227.html
- brass: Starline and Winchester (both new)
- COAL: 1.260 and 1.263 (last 3 loads)
- temperature: 50 oF (10 oC)


load (grains)~~average (fps)
7,7.................1078
8,0.................1085
8,3.................1113
8,6.................1163
8,9.................1186
9,1.................1200
9,3.................1218
9,5.................1221
9,7.................1240
9,9.................1248
10,1...............1255
10,3...............1268

At 10,3gr of Rex 3 the case is almost full and powder becomes compressed quite much. Perhaps could go to squeezed 10,5 or heaviliy squeezed 10,7gr but I'm sure that 1300fps wouldn't be reached anyway, so nothing to write home about it. I don't recommend to use any heavier bullets because Rex 3 is too fast, neither some expensive bullet like Speer Gold Dot 155 or 165gr because you will be making mild/target loads that cost too much.
Anyway, if you shoot 10mm a lot and have some lighter non-expensive bullets, Rex 3 is very interesting because of its price.

Burien
11-13-2010, 20:25
180 gn berrys plated fp bullet and 5.6 gn of REX II at 1.250 with win LPP = 975 fps out of a glock 29 excellent starting load, very light and easy to shoot, no excess preassure id.


135 gn nosler jhp bullet and 7.4 gn of REX II at 1.250 with win LPP = 1150 fps out of a glock 29 excellent starting load again, no excess preassure id on brass

Burien
11-19-2010, 11:06
135gn JHP Nosler with 8.0 grains of REX II, 1.250" = 1260 fps no pressure signs at all, very pleasant to shoot, cool morning today. Winchest LP.

* I find that the Wolf LP kicks up the FPS about 20 fps ave.



I loaded up 17 grains of WC820 surplus (like AA#9) much bigger "boom / flash" and not all powder burned, began to clog up the chamber, getting 1160 fps out of it, with Winchester large pistol, again no pressure signs.
Again I'm sold on REX II

robert91922
11-21-2010, 15:04
135gn JHP Nosler with 8.0 grains of REX II, 1.250" = 1260 fps no pressure signs at all, very pleasant to shoot, cool morning today. Winchest LP.

* I find that the Wolf LP kicks up the FPS about 20 fps ave.



I loaded up 17 grains of WC820 surplus (like AA#9) much bigger "boom / flash" and not all powder burned, began to clog up the chamber, getting 1160 fps out of it, with Winchester large pistol, again no pressure signs.
Again I'm sold on REX II
I strongly recommend to try Rex3. It's safer (slower burning) and results will be better - you can put it more in case because it's heavier.

robert91922
07-28-2011, 09:41
Here's chrono report for 180gr XTP's / Rex Magnum / CCI 300 LP / Glock 20 / IGB 4.6 barrel w. full supported chamber. Temp. was 21C ( 70F).

load (grains) average (fps)
11.0..............1272
11.2..............1281
11.4..............1285
11.6..............1290
11.8..............1291
12.0..............1306

Accuracy good (see target at 27 yrds bellow). Primers still OK, not flattened at all. Case Head Expansion at max. 0.431 but due to tight and full supported chamber of IGB barrel this could not be relevant. I think Rex Magnum/180gr combination has still some way to go so a day after loaded another batch of 12.2 to 12.6 gr.
Data for 12.2 – 12.6 loads are gonna follow within few days after next trip to the range.

Similar batch with Vihtavuori 3N38 powder was done as well, it could be seen in Vihtavuori Powders sticky thread.

And here are some of that day's photos:

http://i1135.photobucket.com/albums/m621/robert91922/3N38vsRexMagnum_180gr_260711/ShootersView2-1.jpg
http://i1135.photobucket.com/albums/m621/robert91922/3N38vsRexMagnum_180gr_260711/AmmoNotes2.jpg
http://i1135.photobucket.com/albums/m621/robert91922/3N38vsRexMagnum_180gr_260711/Target25m_RexMagnum_11-12gr_180XTP.jpg

Burien
07-29-2011, 18:00
Too bad REX powder co is no longer in Bussiness :( I really like Rex II for all around shooting loads

robert91922
07-30-2011, 12:13
Too bad REX powder co is no longer in Bussiness :( I really like Rex II for all around shooting loads
That's really so bad news that I can't believe it. Anyway, just in case, few minutes ago I have ordered last 2 cans or Rex1 and Rex3 (1kg each, no more in stock) from my retailer here in Slovenia.
Now he's on vacation until 5 Aug. we'll see if he can order some more or this bad news are bad reality :crying:

robert91922
08-09-2011, 09:22
Sad but true.

Although still no trace of cheap china gunpowders here in EU. If I'll have to buy expensive Vihtavuori for range/plinkin' ammo from now on it won't be such fun anymore :crying:

Burien
08-11-2011, 13:48
Well IMR 800x is still affordable if you can find it, Canadian made..... I still like it though :)

robert91922
08-11-2011, 14:22
Few months ago I have sent email to my retailer about 800x. Perhaps he will get it in stock till the end of this year :impatient:
Seeing is believing.

robert91922
08-18-2011, 14:41
Here's chrono report for 180gr XTP's / Rex Magnum / CCI 300 LP / Glock 20 / IGB 4.6 barrel w. full supported chamber. Temp. was 21C ( 70F).

load (grains) average (fps)
11.0..............1272
11.2..............1281
11.4..............1285
11.6..............1290
11.8..............1291
12.0..............1306

Accuracy good (see target at 27 yrds bellow). Primers still OK, not flattened at all. Case Head Expansion at max. 0.431 but due to tight and full supported chamber of IGB barrel this could not be relevant. I think Rex Magnum/180gr combination has still some way to go so a day after loaded another batch of 12.2 to 12.6 gr.
Data for 12.2 – 12.6 loads are gonna follow within few days after next trip to the range.

Similar batch with Vihtavuori 3N38 powder was done as well, it could be seen in Vihtavuori Powders sticky thread.

And here are some of that day's photos:

http://i1135.photobucket.com/albums/m621/robert91922/3N38vsRexMagnum_180gr_260711/ShootersView2-1.jpg
http://i1135.photobucket.com/albums/m621/robert91922/3N38vsRexMagnum_180gr_260711/AmmoNotes2.jpg
http://i1135.photobucket.com/albums/m621/robert91922/3N38vsRexMagnum_180gr_260711/Target25m_RexMagnum_11-12gr_180XTP.jpg

and here are data of following batch, the rest is the same as above, only temp. was 2 or 3 higher - can't recall that, forgot to write it down then.

load (grains) average (fps)
12.2......................1330 ES 20.68 SD 9.94
12.4......................1339 ES 18.44 SD 8.88
12.6......................1346 ES 15.72 SD 7.14

glock20c10mm
08-18-2011, 21:35
and here are data of following batch, the rest is the same as above, only temp. was 2 or 3 higher - can't recall that, forgot to write it down then.

load (grains) average (fps)
12.2......................1330 ES 20.68 SD 9.94
12.4......................1339 ES 18.44 SD 8.88
12.6......................1346 ES 15.72 SD 7.14
Those are good numbers! COL?

robert91922
08-18-2011, 22:27
Those are good numbers! COL?

1.266
Had to make them a bit longer than usual due to small space left for bullet.

robert91922
10-31-2011, 04:17
I read on local shooter's forum that Rex factory in Hungary was not closed, they just stopped exporting and selling gunpowder for few months because there was some changes in ownership of factory. However, production never stopped. Until December this year Rex powders will be available again on the market. All 10mm reloaders should tell their retailers to order few cans of Rex Magnum powder because it's an excellent and cheap propellant for 10mm/155, 165 and 180gr. Compressed loads w. this powders are great, don't hesitate to push it down a bit when seating bullets.
For full power 200gr it's a bit too fast IMO.