BULLET WEIGHT:     180gr.
BULLET MFR/STYLE:  Hornady XTP
PRIMER:           CCI 300
BRASS:            Starline
POWDER:           AA #9
CHARGE WEIGHT:    14.9grs.
c.O.L.:           1.260"
VELOCITY:         1266 fps
OTHER DETAILS:    One of the most accurate loads I shoot in the G20-SF
Five round group. 25 yds.  Bottom hole is two rounds.

Awesome report RDub01, It has always amazed me how accurate Blue Dot is...and not just in 10mm.  I first started using Blue Dot in my 44Mag and 357Mag and 12 gauge in 1978.  With almost every bullet combination cast, cast with gas checks and jacketed they were deadly accurate.  The S&W Mod 29 nickel 8 3/8" iron target sights, could hit 1" groups even at 100 yards and it was scary that other guys who shot with me, put their scoped rifles away as I shot the RCBS cast 240 Grain Silhouette with gas checks...hand weighed 16.2 grains was the magic load for that combination. 

One day my brother-in-law and I were shooting and I had stabbed a 3/4" wide ripping of wood in the ground at the 100 yard berm, for the heck of it.  I shot it with the 44Mag 240gr mentioned above and when we checked the stick, it had a hole about 2" down from the top almost dead center of the 3/4" wide ripping, the hole seemed small for such a big bullet and he said that I didn't shoot that hole...
The next setup to shoot again, I shot the stick again, almost the exact same hole, we were both amazed how accurate the shots were.
Oh to be young, strong and have my hawkeye sight again...BTW, Tested Newly loaded 44's against stuff @ 1370 fps, against stuff loaded back in 1979 1360 fps.

Yep.. Burned a lot of Blue Dot over the years!..
When I first started loading in earnest, about 1969 or so, There were three handgun powders.. Bullseye, Unique and 2400.  I soon discovered H-110 and Blue Dot and the rest is history..
Lately though I've discovered how useful AA #9 is in 44 mag as well with jacketed bullets.  I got some pretty amazing loads with #9.  Even better than 2400, H-110, 296, or MP300.

Howdy good folks.

G40MOS.
Stock Barrel, trigger polish, Vortex 3moa reddot.

Have tried a variety of bullets and boolits, powders, primers, etc.

Best so far:
Starline Brass
Fed 150 Primer
12.5 gr AA#9
Arsenal Molds 403-200 WFN PC-this mold is completely amazing, best I have ever owned. 
Sized 0.4035", tumble and bake PC, size again to 0.4035"
LEE FCD with guts removed used on previously fired brass to remove bulge.
1.250" OAL
Very light crimp, enough to pass plunk test without crimping down boolit.
Not sure on velocity, but swings my 8" steel plates very hard, I don't ultimately care just about velocity, just wanted accuracy at the higher end.  I may put them over the chrony some time I guess.

Sitting on my very short hunting chair, with my hands/wrists  between my knees, at 75 yards, I can put 3 or 5 shot groups usually within 2-4 inches, sometimes 2 or 3 are nearly touching.   
Hundreds of rounds and the same result, hold steady, take my time, and watch the paint come off the target near the last one. 

Its nuts, if I can hold still enough and have a consistent grip it hits the plates every time at 75 yards, and at 50 yards it feels like a gimme.  I plan to work out to 100 yards or maybe more over the summer.     
Have not spent time shooting for groups at 25 yards, but I should I guess just to see what it would do, I bet lots of them might almost touch...

This g40 is SO MUCH FUN!   I sold my SBH 44 after I bought this 10mm, it'll do everything I need a handgun to do.   

This is a totally great forum, and I owe most of the success of this load to the info I got here over the last year.

Dan

BULLET WEIGHT: Berry's 155 HB-FP

CASE MFR.:  Frderal

PRIMER:  CCI LP

POWDER:  AA-9

CHARGE WEIGHT:  15.0

OVERALL CARTRIDGE LENGTH:  1.255"

VELOCITY:  1135

OTHER DETAILS:  Glock 40




BULLET WEIGHT:  Speer 165 Gold Dot

CASE MFR.:  Federal

PRIMER:  Winchester LP

POWDER:  AA-9

CHARGE WEIGHT: 14.0

OVERALL CARTRIDGE LENGTH:  1.250"

VELOCITY:  1218 (G40)  1276 (Kimber STII 5")

OTHER DETAILS:  15.0 flattened primers...






BULLET WEIGHT:  Speer Gold Dot HP

CASE MFR.:  Federal

PRIMER:  Winchester LP

POWDER:  Power Pistol

CHARGE WEIGHT:  10.0

OVERALL CARTRIDGE LENGTH:  1.250"

VELOCITY:  1276 (PARA Hunter 6")    1303 (Kimber STII 5")  1300 (Glock 20 LW barrel)

OTHER DETAILS: This combination was really "screwy" 9.0, 9.5 and 10.0 all were within 20 fps of each other in all the guns. So one really only needs 9.0 grains.





BULLET WEIGHT:  Berry's 155 HB-FP

CASE MFR.:  Winchester

PRIMER:  CCI LP

POWDER:  Power Pistol

CHARGE WEIGHT:  9.0

OVERALL CARTRIDGE LENGTH:  1.260"

VELOCITY:  1175

OTHER DETAILS: Glock 20 LW barrel





BULLET WEIGHT:  165 Speer GD HP

CASE MFR.:  Federal

PRIMER:  CCI LP

POWDER:  Power Pistol

CHARGE WEIGHT: 9.1

OVERALL CARTRIDGE LENGTH:  1.250"

VELOCITY:  1220

OTHER DETAILS:  Glock 20 LW barrel




BULLET WEIGHT:  Berry's 155 HB-FP

CASE MFR.:  Winchester

PRIMER:  CCI LP

POWDER:  Winchester 540

CHARGE WEIGHT:  15.5

OVERALL CARTRIDGE LENGTH:  1.260"

VELOCITY:  1150

OTHER DETAILS:  Glock 20 LW barrel





BULLET WEIGHT:  200 Montana WFN

CASE MFR.:  Starline

PRIMER:  Winchester LP

POWDER:  Longshot

CHARGE WEIGHT: 8.6

OVERALL CARTRIDGE LENGTH:  1.230

VELOCITY: 1210

OTHER DETAILS: RIA 1911 4.25"

Just stumbled on a couple nice loads with a generic 165gr FMJ


BULLET WEIGHT: 165

CASE MFR.:  Winchester

PRIMER:  CCI300

POWDER:  BE-86

CHARGE WEIGHT:  8.0

OVERALL CARTRIDGE LENGTH: 1.260"

VELOCITY:  1150 fps

OTHER DETAILS:  G20-SF  Vortex Viper; 25 yds.





BULLET WEIGHT: 165

CASE MFR.:  SIG

PRIMER:  FED 155

POWDER:  AA #7

CHARGE WEIGHT:  12.0

OVERALL CARTRIDGE LENGTH: 1.260"

VELOCITY:  1260 fps

OTHER DETAILS:  G20-SF  Vortex Viper; 25 yds.

BULLET WEIGHT: Hornady 155 XTP

CASE MFR.: Underwood

PRIMER: Winchester LPP

POWDER: BE-86

CHARGE WEIGHT: 9.3

VERALL CARTRIDGE LENGTH: 1.255

VELOCITY: 1420 avg

OTHER DETAILS: Alliant max load



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Quote from: RDub01 on April 26 2018 07:55:34 AM MDT
BULLET WEIGHT:     180gr.
BULLET MFR/STYLE:  Hornady XTP
PRIMER:           CCI 300
BRASS:            Starline
POWDER:           AA #9
CHARGE WEIGHT:    14.9grs.
c.O.L.:           1.260"
VELOCITY:         1266 fps
OTHER DETAILS:    One of the most accurate loads I shoot in the G20-SF
Five round group. 25 yds.  Bottom hole is two rounds.

Woof, 14.9? Accurate's max is 13.5?

Thanks for the great work ups, they are incredibly beneficial


Ken

Terminator
Hornady manual shows 14.9grs max with AA #9 for 180gr Hornady bullets.
Case expansion measurements are always at or under .4340" depending on temp..
Yes, the latest Western manuals show 13.5grs.

LEE 2nd and older Ranshot manuals show 14.5grs.

The load I've always shot in a G29--14.5 #9/180 coated/KKM barrel.

Originally, I was a fan of mid range book value for Longshot under a 180 grain JHP. It's good for about 1250-1275 out of my Kimber. Lately I've gone to 200 grain FMJ and BE-86

The loads I've settled on, though I'm certainly not done experimenting. All velocities are the averages of ten-shot groups. My priorities are Reliability, Accuracy, Velocity, in that order.

Across the board I use mixed brass if used, Starline if new, and Winchester WLP primers.

Biped Defense Load:
200gr Speer Gold Dot over 8.0 grains of Hi-Skor 800X
= 1172 fps from a 6" KKM barrel, and 1188 fps from the 8" Banshee barrel.

This was my starting load for a couple hundred 200 grain Gold Dot's I came across, and while I intended to go hotter, I liked the accuracy and the recoil and the SD was excellent, so I just stopped at 8.0 grains. Frankly, I think that the 10mm is overkill for bipeds and the extra recoil works against the cartridge, so while you can push this bullet to 1250 or even 1300 fps from a 6" barrel, I think that in many ways doing so is counterproductive. I'm not a big 800X fan...too difficult to work with. But I have a pound of it that I'll only use on "special" loads since every charge has to be hand weighed, so I figured this was a good time to use it.

Quadruped Defense Load:
226 grain Rim Rock hard-cast flat nose bullet (sold as 220 grain, but weighs consistently higher) over 7.0 grains of Longshot.
= 1086 fps from the 6" KKM barrel, 1133 fps from the 8" Banshee barrel, and 1005 fps from a stock Glock 29.

Once again, this load could be a 100+ fps hotter, and I've proven it. But what I ran into with hotter loads was both excessive recoil, and frequent malfunctions in the Glock's regardless of which recoil spring I use if my grip wasn't perfect. Any load that won't function weak-handed is NOT suitable for a defense load in my opinion. I guess if the 100 fps I'm leaving on the table is a deal breaker, I just brought the wrong gun. I'll take reliability and accuracy over velocity any day of the week, and twice on Friday.

Animal Depredation Load:
200 Grain Hornady XTP over 9.3 grains of Blue Dot
= 1223 fps from a 6" KKM barrel, and 1276 fps from the 8" Banshee barrel.

I don't hunt anymore, but if I had the need to kill a large animal with my 10mm, this load is a good one. It's VERY accurate. The XTP doesn't expand as much as the Gold Dot, so it penetrates deeper. I think it's the best expanding woods bullet on the market today. LongShot might get the bullet going a bit faster, but the Blue Dot is so accurate that I've never seen any reason to find out.

Plinking Loads:
I shoot a lot more plinking loads than anything else, and my go-to bullet for the past couple years has been Blue Bullets. They're accurate, economical, and clean. While I like heavy bullets in 10mm, I shoot mostly 165 grain Blue Bullets, simply because you get more of them for the same price compared to heavier bullets. The vast majority of 165 grain loads I have are for .40 S&W, since that's what I compete with, but I still use them for 10mm.

200 grain Blue Bullet over 8.5 grains of Blue Dot.
= 1100 fps from 6" KKM, and 1210 fps from the 8" Banshee barrel.

The accuracy is good in the KKM, and very good in the Banshee. It's a gentile load that's easy on the brass, easy on the gun, and easy on the shooter. The brass lasts forever with this load, and when you're shooting thousands of rounds a year, that matters. It certainly could be bumped up higher, but when you're just ringing steel, what's the point?

165 grain Blue Bullet over 9.7 grains of Power Pistol
= 1349 fps from a 6" KKM barrel, and 1421 fps from the Banshee.

From the KKM it's marginally accurate...nothing special, unfortunately. But from the Banshee it's a freaking one-hole-wonder. I've yet to find a 165 grain load that both the KKM and the Banshee barrels love...seems it's either-or, but not both. I'll keep working on it.

Other Loads:
Some other loads have proven to be very good performers, though not part of my daily loading schedule.

180 grain laser cast over 9.1 grains of HS-6 = 1200 fps from a 6" KKM barrel and 1290 fps from the Banshee. Accuracy out of the Banshee is super-good, and that bullet is HARD. It actually makes indents in my AR500 Steel Challenge targets, and no other bullet does.

11 grains of AA-9 under a 200 grain Rim Rock or Blue Bullet gives 1100 /1150 fps from the pistol and Banshee respectively. I like the accuracy, but it's a comparatively expensive load for plinking due to the cost and volume of AA-9.

None of these loads are fire breathers. After a faze of trying to load the hottest rounds possible, I realized that I was ruining my brass, battering my guns, compromising reliability and slowing down my shooting for somewhat negligible gains. Part of the beauty of the 10mm is that you can shoot it fast, but the more it recoils, the slower it shoots. I can see making that compromise, but to me reliability is king, and the nuclear loads have proven to be less reliable in my experience. 165 is the start of major power factor for USPSA scoring, and a 200 grain bullet going 1200 fps makes 240 power factor...if that's not enough poop then I think it's time to switch to a magnum revolver rather than trying to milk another 10% out of the 10mm cartridge.

Bullet - 200gr Gold Dot
Brass - Starling
Primer -CCI 300 LP
Powder - Longshot
Charge - 8.0gr
OAL - 1.250
Velocity - avg 1200fps
Gun - Springfield RO Elite 5' with flat bottom FPS and 22# spring

Considering how I have seen BE-86 toted as the powder for 180-200 cast bullets it is surprising to find only 1 thread mentioning BE-86