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Old 12-31-2003, 11:20   #21
spongeman66
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I would consider 800X to be medium to low flash. Nothing like Blue Dot for flash, and a little more flash than the DoubleTap powder.
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Old 03-09-2004, 13:28   #22
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Hey Spongeman:

I can't open your McNett 800x spreadsheet. If I try to open it, I get a message that it has "been corrupted or no longer exists." If I try to save it I get a message that my computer doesn't recognize the program that created it.

Any suggestions?

Nevermind, I figured it out. Thanks!
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Old 04-04-2004, 21:33   #23
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Does 700x burn too fast or create too much pressure?

Sorry, posted this in the main place too, just can't delete it out of here, won't let me.

Last edited by rickyj; 04-04-2004 at 21:41..
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Old 04-05-2004, 05:23   #24
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How about some favorites for IMR 4756?

Take Care
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Old 06-01-2004, 19:34   #25
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Anyone have any load data for 800x and 165-gr bullets?
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Old 06-11-2004, 21:27   #26
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I tested some 220 gr. LTCs today with my Shooting Chrony. Velocities are at sea level, 80 deg., 100% humidity.

All loads are 220 gr. LTCs, IMR 800X, Starline cases, Winchester WLP, Witness w/ 4.5" barrel, average of 5 shot groups:

6.0 - 885
6.5 - 952
7.0 - 997
7.5 - 1032
8.0 - 1072
8.5 - 1116
9.0 - 1147
9.5 - 1189

Leading was pretty heavy when I was finished.
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Old 07-10-2004, 17:42   #27
BuffaloBo
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Went to the range and Chrono-ed some Winchester 180 FMJ's over some 800x using CCI 350's and Remington nickle cases.
COL was at 1.250"
Gun used was a stock G20 except for a 22lb Wolff Spring.

All results were based on samples of 10 firings:

8.7 gr 800x
Average: 1168 FPS
Standard Dev: 22
Hi: 1212
Lo: 1139


9.0 gr 800X
Average: 1208 FPS
Standard Dev: 32
Hi: 1242
Lo: 1152

9.3 gr 800X
Average: 1253 FPS
Standard Dev: 43
Hi: 1318
Lo: 1190


I had one SERIOUS glock smiley from the 9.3 gr sample. Also, about half of the primers were very flattened from the 9.3 gr sample. From the other samples there weren't any noticeably bulged cases.


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Old 08-03-2004, 18:48   #28
BuffaloBo
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Some new data today.
Same vartiables as above EXCEPT 5" KKM barrel and only one sample @ 9.3gr IMR-800X


1294
1286
1272
1250
1268
1279
1273
1261
1238
1332

Avg: 1275
Std Dev: 26


Cases look fine thanks to the KKM barrel. I'll try to bump up the powder charge next time.

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Old 08-11-2004, 21:40   #29
BuffaloBo
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Some new data today.
Same variables as above EXCEPT 5" KKM barrel and two samples @ 9.5 and 9.7 grains.


(9.5 gr IMR-800X)
Avg: 1289
Std Dev: 34
Hi: 1374
Lo: 1252

(9.7 gr IMR-800X)
Avg: 1326
Std Dev: 22
Hi: 1366
Lo: 1284


Some primers do appear "flattened". Numbers are very good, though.
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Old 08-22-2004, 17:39   #30
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If anybody here, like myself, shoots 357 SIG from a G20 with the appropriate aftermarket barrel, I have some data here to share.


G20 with Federal barrel(standard length)
124 gr Speer Gold Dot
Speer Cases
CCI Primers
10.0C IMR 800-X
COL about 29.5mm


A five shot group produced:

Avg: 1449
Std Dev: 13
Hi: 1467
Lo: 1434

Cases appear not to be bulged at all. Primers appear normal.
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Old 08-22-2004, 19:38   #31
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BuffaloBo
Bullet weight and COL for the 357 Sig?
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Old 08-22-2004, 21:55   #32
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Sorry, my bad. 124 gr Speer Gold Dot at a COL of about 29.5mm
Sorry about the metric measure, but it's a lot easier to read and decipher than 32nth's of an inch.

As you may know, the beauty of 357 SIG on the 10 mm platform is the latitude of COL's available. You can load'em long if you need to, because the mags are accomodating . I'm pretty sure I could have made the COL shorter in this loading. I didn't feel any abnormal resistance or see any bullet deformation as a symptom of powder compression.
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Old 09-02-2004, 18:00   #33
BuffaloBo
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Some new data today.

Glock 20
5" KKM barrel
CCI 350 magnum primers
200 gr Hornady FMJ FP
IMR 800-X


(7 shot sample)
7.8 gr IMR 800-X
Avg: 1105
Std Dev: 23
Hi: 1138
Lo: 1063

(7 shot sample)
8.1 gr IMR 800-X
Avg: 1143
Std Dev: 23
Hi: 1173
Lo: 1112


Some observations:

I'm a little disappointed with these results. I guessed these loads would have done better. Well anyways, the cases and primers appeared normal. I suppose there is some room to load them hotter next time.
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Old 09-14-2004, 09:12   #34
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I chrono'd 200g. XTPs over 10.0g of 800x through my G29 this past weekend and averaged just about 1250 fps. (KKM barrel and 22lb Wolf Spring).

The primer pushed itself into the firing pin hole, leaving a raised square area on the primer.

I was recieving velocities that I had anticipated with other loads, using other guns, and therefore believe this was legit.
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Old 09-14-2004, 10:09   #35
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Quote:
Originally posted by Tito

The primer pushed itself into the firing pin hole, leaving a raised square area on the primer.
Wow, I've never seen that before. I guess that would be the time to step it down a notch.

Last edited by Medpilot 2; 09-14-2004 at 10:12..
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Old 09-14-2004, 10:39   #36
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Yeah, the primer didn't unseat itself, it just left a raised rectangular impression around the firing pin indentation.;P
Apprx. 2mm high and 1mm wide
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Old 09-26-2004, 14:11   #37
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Quote:
Originally posted by Tito

The primer pushed itself into the firing pin hole, leaving a raised square area on the primer.
What you speak of is quite normal with hotter than usual loads. One needs to be concerned when then primer is flush with the base and appears very flat.
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Old 10-12-2005, 15:04   #38
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Quote:
Originally posted by MCNETT
here are a couple of the results from the 10"T/C:
AVG 10 shots Starline cases, CCI 350, 1.26" OAL
135gr Nosler 14.5gr 800X- 2022fps 42,000psi
10.0gr 800X 200XTP - 1552fps 38,500psi

SAAMI max is now 37,500psi.
This outing was a whole lot of fun, with the 10"bbl I can get .44mag ballistics from my 10mm! The 135 EXPLODES milk jugs at that speed!
-Mike
I can't tell you how happy I was to find this forum! I think that it is really cool that the pros are willing to share their data ... and I was really stoked to see actual pressure numbers for the 135gr load ... but then it occurred to me that they were too far over 37.5kpsi for me to want to go there. They do serve as a good boundary for me not to cross, but are there any measured 800X pressures for 135gr Noslers that are a little closer to the SAAMI max?

Thanks so much,

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Old 11-17-2005, 09:19   #39
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Hi guys.

I have been reading that some of you have had some success in tweaking your Uniflow measures to handle 800x reasonable well (used w/ the small cylinder, baffle, and kept mostly full at all times)...

That said, mine is not working so well.

So, while I am inclined to continue to play with it, I thought I'd ask if any here are using an electronic powder scale/dispenser for 800x. It seems to me that powder drop should meter based on weight...not volume...correct? If so, this seems like a naturally better way to meter out 800x.

Thoughts?
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Old 11-17-2005, 09:26   #40
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I'm currently trickling/weighing each charge by hand ;g but I'm thinking that the electronic approach will be my Christmas present ...

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