10mm Auto

[padom]

Sticky this for 10mm Auto load data



I'm doing load development for my Gen4 Glock 40 MOS with RMR RM07 Gen2 with 200gr hard cast bullets from Montana Bullet Works... goal is bear loads.

I purchased .401 WFN-GC from them for bear loads and their WFN-PB practice bullet. Both are hard cast.

Had a lengthy conversation with their bullet guy and he said their WFN-GC has killed many bears and he would take it over a BB or Underwood any day. I'm not going to pretend I know what I'm talking about or exactly what he said because I don't remember 100% but he talked about their mixture vs high antimony. Either way, MBW comes highly recommended.

Today was my first day playing with loads. I loaded up 5ea 6.0-7.2gr in 0.2gr increments n350 with the 200gr Montana Bullet Works HC WFN practice bullet they sell. HiTek coated. Sig nickel brass and CCI LP. Stupid accurate at 10yd out of my factory Gen4 Glock 40 MOS with RMR RM07 Gen2. Don't have any speeds but I will tomorrow. They shot soft and the higher charges were probably in the 1025-1100 range.. zero leading issues. Nice and clean

Guy MBW told me to shoot my same load with the 200gr HC practice bullet and the WFN-GC.. he also said dont worry about trying to get them super fast. He said 1100-1150 is fine they will penetrate great at that speed. waiting for some longshot to arrive to load a good 1200fps bear load with those.

I did chrono the underwood 200gr HC round out of my gun and avg was 1200.. they also started leading the last 2" of my barrel

Also have a Bar-Sto match barrel being made for this Glock 40. Once it's ready they are gonna call me to send my pistol in to have the barrel custom fit. Mostly doing this for better case support over factory glock barrel.with hotter bear loads but I'll take the increased accuracy as well.

Here the Montana Bullet Works hardcast 200gr WFN-PB HiTek coated practice bullet








Here the Montana Bullet Works hardcast dangerous game 200gr WFN-GC bullet I'll be loading to carry in the woods










Here my targets from yesterday with VV N350 and the 200gr WFN-PB @ 10YD



6.2GR







6.4GR







6.6GR






And here is factory Underwood 200gr hardcast @ 10yd 1200fps on labradar

 

[padom]

Glock 40 MOS

6.6gr N350
SIG Nickel brass
CCI LPP
1.251" COAL

MBW WFN-PB
1072 SD 6

 

[towerofpower93]

This thread has my interest as I just received a large frame P80 yesterday and was planning to get a G20 slide and LPK to finally get into this cartridge. Also thinking about getting a threaded G40 length barrel for a little extra speed while retaining the shorter slide of the 20 should I want to put the factory barrel back in.

I have a little over a pound of Blue Dot and was going to start there, but it'll be cool to see what powders others have been using to get good speeds in the 165-200gr range.

 

[wvfarrier]

I use MBW for a lot of my hard cast needs. Their 160 grain HCGC .358 projectiles shoots insanely well out of my Winchester 1892 in 357 mag. I have them put the hardness around 15 and they really smack the hell out of game animals

 

[TACC]

Are you going to increase the distance to 25 yards for accuracy testing. I don't like the idea of letting bears getting within 10 yards of me!

 

[padom]

Just got back from the range doing pressure testing with my chrono with N350 and w572. Here are the numbers.

N350 numbers are 5 shots each
w572 numbers are 2 shots each

Looks like w572 is going to work out just nicely to mimic Underwood 200gr HC ammo.. I wasnt doing any accuracy testing but 7.2gr was very accurate at 25yd @ 1158 SD 4... 7.5, 7.8 and 8.1 recoil mimic Underwood 200gr HC ammo and velocity. I chrono the Underwood at 1200 across 10 shots... Guys at MBW told me dont go chasing velocity. He said find a load that you can shoot accurately in the 1100-1200 range and go with it and they will penetrate. Dont need to get them to 1200 or higher.

N350 7.4gr was very accurate @ 1159 SD 4.5... Looks like right around that 1160 mark is where accuracy with these bullets is. both powders 1158/1159 SD 4 and 4.5 both very very accurate at 25yd...

Now I will do some rested accuracy testing at 25yd and play with seating depth a little and fine tune these 2 loads..






Here 25yd 2 shots of w572 7.2gr 1158 SD 4. The 2 high left shots. that 3rd shot was from the group above that dropped super low...

 

[padom]

Are you going to increase the distance to 25 yards for accuracy testing. I don't like the idea of letting bears getting within 10 yards of me!

Im currently testing powders to get the speed/pressure im looking for to get these MBW 200GR WFN-GC to mimic Underwood loads for bear. Ill now start testing accuracy from rested position @ 25yd and play with seating depth a little to get them dialed in.

 

[padom]

7.2gr w572 loaded up for some 25yd accuracy testing

Mostly all 200gr WFN-PB practice bullets but I also loaded up thr 200gr WFN-GC since that's what I'll be carrying in the woods to see how they like this load or if it needs tweaked....

 

[diggler1833]

8.0gr 800X over a 180gr Rainier TMJ is a fantastic target load for my Wilson Combat. Using CCI 350 and Starline brass.

I use 8.7gr of 800X with a 180gr XTP for hunting...but admittedly haven't shot anything yet. I developed it last year, but ended up tagging out in archery season.

 

[padom]

Did some 25yd testing today....no ransom rest or anything...just my hand resting on a bag... the 2 top and bottom groups on the far right are the 200gr MBW Hardcast lubed Gas check....the other 4 groups are the 200gr MBW practice bullet..

The MBW 200gr WFN Gas check hardcast were more accurate at 25yd vs the practice bullet.


New SIG Nickel 10mm brass
CCI 300
7.2GR W572
1160 SD 4

 

[AZgeek]

Cumulative pattern looks a lot like mine with a single aiming point!

 

[wvfarrier]

I have had great success with projectiles from MBW. I use their 160gr HCGC in my 357 mag rifle loads and 38 +p loads for woods carry. I can tell you that from a Win 1892 with a 24" barrel, using Lil Gun, they knock the soul right out of whitetail deer. They make a good product. One side note....if you have never used Longshot before....its Super Loud!. I find it substantially louder than equivalent loads using other powders

 

[TACC]

Did some 25yd testing today....no ransom rest or anything...just my hand resting on a bag... the 2 top and bottom groups on the far right are the 200gr MBW Hardcast lubed Gas check....the other 4 groups are the 200gr MBW practice bullet..

The MBW 200gr WFN Gas check hardcast were more accurate at 25yd vs the practice bullet.


New SIG Nickel 10mm brass
CCI 300
7.2GR W572
1160 SD 4

The 2 groups on the right aren't bad at all for 25 yards, in my opinion.

 

[padom]

The 2 groups on the right aren't bad at all for 25 yards, in my opinion.

From a factory glock barrel, I agree. We will see how much they shrink once the new Bar-Sto Match Target barrel is installed.

 

[Gary Paugh]

Waiting on some of the 200 gr mbw bullets to show up have a Barsto barrel for my G-20 and a keg of longshot.

 

[padom]

Barsto called me Friday to let me know my Match/Target G40 barrel is ready and to send in the gun to be hand fit.

I'm sending it Thursday.

 

[towerofpower93]

Looks like I'm going to settle on 9.1gr of BE-86 for the 1,000 160gr RN powder coated bullets I got from J-Ames to start my 10mm load dev with. Will save the Longshot for 180-220gr bullets whenever I start messing with those.

Also thinking about getting Ron Willams to build me an 8-10" AR upper to ride on the greasegun mag lower I use with a 45ACP upper he built back in 2017. He can mod the GG mags to run 10mm and I have a ton of those already, so I wouldn't miss getting 5-6 modified for 10mm.

CCI LP primer
J-Ames 160gr powder coated RN
OAL 1.260”
Range pick up brass
Lee FCD with minimal crimp
Stock G20

5rd strings

BE-86 8.7gr

Lo: 1251
Hi: 1278
Avg: 1264
ES: 27
SD: 11.4

BE-86 9.0gr

Lo: 1261
Hi: 1310
Avg: 1288
ES: 49
SD: 18.2

BE-86 9.2gr

Lo: 1300
Hi: 1329
Avg: 1313
ES: 28
SD: 12.8

Longshot 8.7gr

Lo: 1174
Hi: 1220
Avg: 1199
ES: 46
SD: 19.9

Longshot 9.0gr

Lo: 1205
Hi: 1271
Avg: 1246
ES: 65
SD: 24.7

Longshot 9.2gr

Lo: 1226
Hi: 1271
Avg: 1243
ES: 44
SD: 18.2

 

[padom]

I got a few thousand Sierra 180 grain jacketed hollow points sitting here and a bunch of 180 grain round nose that I'll work up a load for my new Dan Wesson Bruin 10 mm. Sitting here waiting for my G40 to come back from Barstow so I can continue loading up the 200 grain hardcast and test with long shot. They did have me send them some of my current 200 grain Hardcastle loads for when they fit the barrel and test shoot it

 

[towerofpower93]

Finally got out to run larger strings of 160gr powder coated J-Ames bullets over 9.1gr of BE-86. I got data from the OEM G20 barrel as well as a KKM threaded G40 length barrel.

Not sure what was up with the 1162fps round in the G20 barrel string but deleting that put the average a little higher and the ES/SD much tighter.

G20
BE-86 9.1gr
CCI LP
J-Ames 160gr powder coated RN
OAL 1.260”
Range pick up brass
Lee FCD with minimal crimp

20rd strings

G20 barrel

Lo: 1162
Hi: 1359
Avg: 1304
ES: 197
SD: 37.9

G40 KKM threaded barrel

Lo: 1391
Hi: 1459
Avg: 1426
ES: 68
SD: 19.4

 

[padom]

Barsto called today, my G40 with match target barrel is fitted to my pistol and ready to ship back. Wanted to schedule Signature deliver for friday.

Unfortunately I'm out of town Friday till Sunday night so will have to wait till next week

 

[OlsenG_360]

G40 MOS
Hodgdon Longshot 7.8gr
180gr Xtreme plated FP
underwood/starline/hornady mixed brass
Winchester Large pistol
1.260" OAL

1,153fps average. Very accurate and clean load for practice.

 

[padom]

Anyone using Quickload with 10mm 200gr Hardcast?? I have quickload but slim pickens for 200gr HC bullet selection...I dont see any.. Just the LEADEx FN .400 200gr

 

[Gary Paugh]

Anyone using Quickload with 10mm 200gr Hardcast?? I have quickload but slim pickens for 200gr HC bullet selection...I dont see any.. Just the LEADEx FN .400 200gr

I just loaded 200 rds of 200 gr HC with 8.2 gr of Longshot, 1190 fps out of my G-20, I did a lot of looking and that seems to be one of the preferred loads, AA-9 is the other powder of choice with the 200gr cast.

 

[Terp]

How are you liking the coated MBWs? I have a couple of boxes of their lubed 200gr WFN on the shelf with plans to work up a woods load this Fall (AA#9), but have been meaning to try out some of their coated for training/plinking/daily drivers for awhile...just haven't pulled the trigger yet.

 

[padom]

How are you liking the coated MBWs? I have a couple of boxes of their lubed 200gr WFN on the shelf with plans to work up a woods load this Fall (AA#9), but have been meaning to try out some of their coated for training/plinking/daily drivers for awhile...just haven't pulled the trigger yet.

Accurate and run great. Zero complaints

 

[SmithM21]

I am just getting into 10mm and I want to reload for my CMMG 10 pistol. My barrel is 8" and I will be keeping a what on this thread.

These are old pre-Brace Law pics. Brace has been removed.

 

[aklaunch]

I load for a Glock 20 G4 with a Lone Wolf barrel that is the same length as the OEM barrel.
Hornady 180gr XTP's - New Starline Brass - CCI #300 - 13.0 grains of AA#9 = 1150-1200 fps depending on the season, and how heavy, or light handed i was throwing charges.

The OEM barrels velocity seem to be comparable. Perhaps 20fps slower.

I do not shoot pistols well enough to see any consistent differences in accuracy with this bullet/powder combination. I feel like group size is fully dependent on how well i am shooting on that day.

I have yet to run 1 time or multi fired brass by the Lab Radar. I am not sure if that effects velocity or not.

My 4 legged predator loads are always in new brass.

Edited for velocity correction!

 

[towerofpower93]

Finally got my 12” DI 10mm upper out to zero the T2 and see if the 160gr load I worked up for my G20/40 would run in the AR. Fortunately, it does. The upper was built by Ron Williams of RMW Xtreme out of Florida. He built me a DI .45 upper a few years ago to go along with a lower that takes STANAG AR mags as well as greasegun mags for .45ACP. Ron modified five of my GG mags to run 10mm and they work like a dream. Ron thought BE-86 might be too fast, and I’ll probably work up some 180s with Longshot eventually, but these ran fine today. On to the chrono data.

12” DI AR10MM suppressed with Octane45
BE-86 9.1gr
CCI LP
J-Ames 160gr powder coated RN
OAL 1.260”
Range pick up brass
Lee FCD with minimal crimp

10rd string

Labradar series: 244

Lo: 1462
Hi: 1566
Avg: 1512
ES: 105
SD: 33.1

ETA: I added my G20/40 barrel chrono data from back in August below. I wonder if this is a case of a fast pistol powder burning out too quick, leading to little velocity gain. I've basically doubled the length of the barrel, compared to the KKM threaded G40 length pipe, but only picked up ~100fps. Same load data as above.

20rd strings

OEM G20 barrel

Lo: 1162
Hi: 1359
Avg: 1304
ES: 197
SD: 37.9

G40 KKM threaded barrel

Lo: 1391
Hi: 1459
Avg: 1426
ES: 68
SD: 19.4

I'm guessing some Longshot and/or Blue Dot 180-200gr loads are in my future if I'm going to wring the most out of this AR upper.

 

[padom]

I tested my 200gr MBW HC-GC load in my new G40 Bar-Sto barrel last week. Chrono @ 1201

 

[samsgreen]

G20
200XTP
S&B Brass
CCI LPM
Accurate #9

12.4 grains gets me 1175-1190
12.5 grains gets me 1215-1225

I'm at 700 ASL and using both my Garmin and LabRadar.

The window for pressure is short and steep, I wont dare go up even .1 from here.
In my buddies Dan Wesson 5" these things are humming over 1300 fps.

 

[JR1200W3]

I built a 2011 as a project and chose a CDR length for a suppressor host. Initially started as a 40 S&W but decided to go 10mm when I saw that the .40 Smith couldn't really handle 220gr bullets and 200gr was already well below subsonic. So my load data is on the weaker side.

Rim Rock 220gr Hardcast, 1.275 COAL
6gr Hodgdon Longshot
Starline brass, 1015fps

200gr Zero TCFM's, 1.250 COAL
6.4gr Hodgdon Longshot
Starline brass
1020fps, 1" 5rd groups at 25yds
The groups below were shot of a game changer with a suppressor attached. Need to work on the 200gr XTP