Quote from: Sobrbiker on July 05 2018 09:03:15 PM MDT
Looks like you passed the Longshot plateau, any pressure signs with the 9.7 load?

I took pictures of all the fired brass casings.  Comparing 9.7 to 9.3, I'd say there's a significant pressure difference to warrant concern   

10MM
1.250 COAL
New starline brass
Winchester large pistol magnum primers seated to .005"
Crimp diameter : 0.4231"
Projectile : Everglades 180GR JHP
Firearm : Glock G20SF with an alpha wolf threaded barrel 5.2"
Chronograph : Prochronograph digital, 8FT away from muzzle
Weather : 87F / 72% Humidity / 1,276 ft (389 m) elevation

10.2 GR Alliant Bluedot

1214, 1224, 1222, 1215, 1230, 1192, 1243, 1201
AVG : 1217.62 SD : 10.971
Muzzle energy : 592 (ft.lbf)

10.5GR Alliant Bluedot

1256, 1250, 1257, 1230, 1233, 1254, 1230, 1246
AVG : 1244.5 SD : 10.977
Muzzle energy : 619 (ft.lbf)

8.5GR Alliant Power Pistol

1235, 1226, 1247, 1268, 1251, 1259, 1256, 1265
AVG : 1250.87 SD : 13.55
Muzzle energy : 625 (ft.lbf)

8.7GR Alliant Power Pistol

1287, 1272, 1261, 1259, 1256, 1255, 1248, 1265
AVG : 1262.87 SD : 11.2
Muzzle energy : 638 (ft.lbf)

9.3GR Hogdon Longshot

1295, 1328, 1307, 1313, 1300, 1320, 1332, 1334
AVG : 1316.12 SD : 13.81
Muzzle energy : 692 (ft.lbf)

9.5GR Hogdon Longshot

1288, 1345, 1333, 1297, 1338, 1293, 1302, 1285
AVG : 1310 SD : 22.82
Muzzle energy : 686 (ft.lbf)

9.7GR Hogdon Longshot

1304, 1316, 1359, 1374, 1381, 1366, 1336, 1384
AVG : 1352.5 SD : 28.39
Muzzle energy : 730 (ft.lbf)

For funs :

1911 STI Trojan
5" barrel

9MM 147GR everglades FMJ
4.0GR VV N340
1.140 COAL

933, 952, 951, 955, 950, 936, 940, 951, 946
Avg : 946 SD: 7.3!!!
Muzzle energy : 292 (ft.lbf)
Power factor : 139.06

Thanks for the heads up, I will see if I can add my 2c to speer's FB page

Greetings, I've had good results with 9.3gr longshot out of my G20 and 2011 under a 180gr precision delta

I just did.  Amazing info!   

holy crap, that 800x looks like it meters terribly.  However, I'm quite surprised at pressure publications being much lower compared to other powders

Hey there.  In my experience, AA #9 was cleaner burning with a good amount of muzzle flash, whilst longshot had no muzzle flash with a bit of smokiness. 

i need to get some underwood and pull some bullets to check out their powder. 

I'll try to be there at 7pm tomorrow.  I just rolled 300 tonight

Quote from: Olgo on April 26 2018 08:18:32 AM MDT
Welcome aboard and nice irons you got there Chris. 

I carry a Glock G29 loaded with Uw 10mm 200g XTPs. I also Have the 9x25 Dillon and the 40sw barrels for some variations.

You have 26# springs? I have 21# springs in mine and it is stiff. It's for the 9x25 Dillon but it handled the 40sw very nicely.

Hey there.  I swapped out the 26 for a 22.  Hoping that the slide stays open a bit longer.  9x25 dillon is an interesting round, just wish it wasn't necked 

Hey there, nice username 

I was perusing gunbroker for 10mm pistols.  I knew that STI made a single stack 10mm, but was not aware of their double stack version.  I already own an STI trojan in 9mm, so I'm highly aware of the quality and craftsmanship of their pistols.  An STI 2011 for a long time had been my grail gun.  As soon as I saw the nitro, my jaw dropped...I just had to have it.  The stock 26 lb recoil spring was a bear when it was new, but it's getting better with every round.  I've fully detail stripped it and put a mirror polish on the sear / disconnector / hammer basically anything that's metal on metal.  Anyhow, here's a pic of my two STI's. 

Hey Nick!  Let's link up again.  I love talking guns and 10mm, so it's nice to meet like minded folks.  I love my nitro, too.  I had some serious buyers remorse since I was an impulse b  no regrets after shooting it, though.  Are you reloading 10?  I can't remember if we had talked about that. 

Hey there.  It was nice to meet you!  Thank you for letting me try the Underwood ammo.  It certainly is a rarity to meet another 10mm fan at the local range.