[_The_Shadow]

Maine1, Thanks for the data...that confirms what I was seeing using 9.4 grains from my testing. In fact I preparing to load another 100 of these...

[Maine1]

I ran these again with 9.0 grains of 800X, standard primers.
low was 1185, high was 1240 or so.
Pretty good load, i had 2 rounds at 1200, and 2 at 1199.
No need for the extra few grains for me.
..though, getting the XTP to 1275 is fun.
Just don't want to beat up my gun shooting lots of these.

[tigman5356]

[tigman5356]

800x in a glock 20 with glock 6'' barrel kicks!!!!

[_The_Shadow]

TigMan, more info about the bullet, velocity and load data would be nice...

Is the plate steel or aluminum? looks like aluminum

[tigman5356]

A36 3/16 sheet metal (mild steel) 155 grain hornady xtp. 6'' glock barrel. double tap brass. I have to review load data, its near the top. 800x powder

[tigman5356]

12.5 grains 800x

[RDub01]

Hello
Just picked up my first Glock pistol and it's chambered in 10mm..
And just joined this forum and am enjoying all the experience posted here.
When reloading a new cartridge for the first time, one should gleen as much info as possible..

I'll starting out with stock barrel and spring and see what happens. I have a 22# spring and rod ordered just in case.

I'll start out with 180 and 200gr XTPs and hard cast bullets.
Looks like about 9.0grs with the 200gr and up to about 9.8grs with 180gr with 800X at a length of 1.26" has been good in everyone's experience. 'Course I will work up to that very carefully.
I'll be working with other powders as well..

The only thing that puzzles me about what I have read is the fascination with magnum primers with 800X..

I've loaded just about every handgun round there is over the years for one reason or another and I have never needed to use magnum primers with anything except H-110/296 which is a must..
Even full charges of 2400 in magnum revolver guns behave quite well with standard primers.

800X, in my experience, is not hard to ignite.. It's just a ***** to work with. It's like pouring Wheaties in a powder measure. Hand weighing is a must.
At 11.0grs, it makes a dandy 110gr JHP plinkin load in .357 Mag L-Frame at 1300fps out of a 4" barrel. And is quite useful in the .40S&W.. all with standard primers.

So.. I was just wondering why mag primers are necessary in the 10mm using 800X?

Thanks much

[dm1906]

Originally Posted by RDub01

Hello
Just picked up my first Glock pistol and it's chambered in 10mm..
And just joined this forum and am enjoying all the experience posted here.
When reloading a new cartridge for the first time, one should gleen as much info as possible..

I'll starting out with stock barrel and spring and see what happens. I have a 22# spring and rod ordered just in case.

I'll start out with 180 and 200gr XTPs and hard cast bullets.
Looks like about 9.0grs with the 200gr and up to about 9.8grs with 180gr with 800X at a length of 1.26" has been good in everyone's experience. 'Course I will work up to that very carefully.
I'll be working with other powders as well..

The only thing that puzzles me about what I have read is the fascination with magnum primers with 800X..

I've loaded just about every handgun round there is over the years for one reason or another and I have never needed to use magnum primers with anything except H-110/296 which is a must..
Even full charges of 2400 in magnum revolver guns behave quite well with standard primers.

800X, in my experience, is not hard to ignite.. It's just a ***** to work with. It's like pouring Wheaties in a powder measure. Hand weighing is a must.
At 11.0grs, it makes a dandy 110gr JHP plinkin load in .357 Mag L-Frame at 1300fps out of a 4" barrel. And is quite useful in the .40S&W.. all with standard primers.

So.. I was just wondering why mag primers are necessary in the 10mm using 800X?

Thanks much

Not sure where you're getting that info, but 800X and magnum primers is NOT advised. In my experience, this powder can be very unpredictable at higher pressures with some calibers (generally larger, .365 and up), which may be attributed to charge-column diameter and/or depth, and a (relatively) very loose stack. Adding magnum primers increased the pressure and velocity inconsistencies in every larger caliber load I have tried (extensively, albeit years ago). It does work well with smaller calibers, .357 and smaller, and is excellent in .32 Mag and 9mm. I've since dumped 800X from my inventory, as there are several equally effective powder options that actually flow, unlike the corn flakes.

Despite this, there are some handloaders who swear by it. If you're a big 800X fan, give it a shot and judge for yourself.

[RDub01]

Originally Posted by dm1906

Not sure where you're getting that info, but 800X and magnum primers is NOT advised. In my experience, this powder can be very unpredictable at higher pressures with some calibers (generally larger, .365 and up), which may be attributed to charge-column diameter and/or depth, and a (relatively) very loose stack. Adding magnum primers increased the pressure and velocity inconsistencies in every larger caliber load I have tried (extensively, albeit years ago). It does work well with smaller calibers, .357 and smaller, and is excellent in .32 Mag and 9mm. I've since dumped 800X from my inventory, as there are several equally effective powder options that actually flow, unlike the corn flakes.

Despite this, there are some handloaders who swear by it. If you're a big 800X fan, give it a shot and judge for yourself.

Thanks.. That confirms my suspicions..

I was just reading through the IMR load data here, starting from page 1, and noticed that a number of 800X loads listed were using CCI350 primers. That's where I got that information. So I was wondering why that was..

Because I enjoy doing research I'll try it in 10mm to see what it does..

Thanks

[Taterhead]

RDub01, welcome to the 10mm. I echo what DM1906 said about mag primers. I have noticed big differences. I can pushed to faster velocities with standard primers since pressure symptoms have appeared earlier with mag primers. It is a good idea to start at Hodgdon's starting charges. One lot I was working with gave some pretty nasty excessive pressure indications at 9.6 grains. Smiles were evident at 9.1. This was under a 180 XTP. There is some indication of lot-to-lot inconsistencies.

Good luck. Stay safe, and I look forward to your results.

[RDub01]

Originally Posted by Taterhead

RDub01, welcome to the 10mm. I echo what DM1906 said about mag primers. I have noticed big differences. I can pushed to faster velocities with standard primers since pressure symptoms have appeared earlier with mag primers. It is a good idea to start at Hodgdon's starting charges. One lot I was working with gave some pretty nasty excessive pressure indications at 9.6 grains. Smiles were evident at 9.1. This was under a 180 XTP. There is some indication of lot-to-lot inconsistencies.

Good luck. Stay safe, and I look forward to your results.

Thanks Tater..
Yes, Been working with 800X for quite a while..
800X is kinda like that dog you never really trust.. Never know when it's gonna bite ya.. There is lot to lot variations for sure..

Anyway really looking forward to load development with this new pistol.. I'll post what I come up with.

[g29guy]

10 mm
180 grain tcfp from MidAtlantic .401
1.26 oal med crimp
assorted brass
300 cci primer
70 degrees
40 % humidity
920' asl
800 x 8.4 grains
shot from Kimber eclipse custom II

manageable, not too harsh on gun good house load

1242 fps
1225 fps
1238 fps
1217 fps low
1241 fps
1244 fps high
1235 fps

1233 average
27 dev