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Now this is a 10mm Glock I could get into.

O4L

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Now that I'm getting into reloading, I would be a lot more interested in the 10mm.

It's a caliber that I've never considered owning before but if the cost of reloading it isn't way more expensive than 9mm and I run across the right deal on a pistol, I might just give it a try.
 

wawazat

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Now that I'm getting into reloading, I would be a lot more interested in the 10mm.

It's a caliber that I've never considered owning before but if the cost of reloading it isn't way more expensive than 9mm and I run across the right deal on a pistol, I might just give it a try.

I would think it would be close to reloading for .40 cal, but with a bit more or different powder. I am not a reloader by any stretch, that is just from comparing the cases and PF of both, plus there is some overlap in projectiles depending on whether you bias toward velocity or weight.
 

Mad Professor

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I would think it would be close to reloading for .40 cal, but with a bit more or different powder. I am not a reloader by any stretch, that is just from comparing the cases and PF of both, plus there is some overlap in projectiles depending on whether you bias toward velocity or weight.

I shoot Glock 10mms, a 20 and 29, in competitions. It is very similar to loading a for .40. But you just can’t interchange the data. I also load .40 and use the same bullet in both, a 180g jacketed hollow point.

One particular .40 load that I developed for bowling pins and USPSA runs 939fps/169pf. This .40 cartridge runs great out of my 10mm guns. But in competition, I have to use a 10mm cartridge. The same powder charge in a 10mm case resulted in an inconsistent burn developing velocities of only 780-830fps. I had to add .5 grain of powder to get it the velocity standard deviation (SD) down in the single digits and it still is down on power compared to the .40 load, making 856fps/154pf.

That 1/2 grain is over 10% of the previous .40 load. Looking back at my load development data on the .40, I got the same (856fps/153pf) velocity with .9 grain less powder. 20% more powder to get the same velocity. Same powder. Same bullet. Both standard Federal primers, although the .40 uses SPP and the 10 uses LPP. The case volume of the .40 vs 10mm makes a real difference. This is also why seating depth can make a difference as it alters the case volume.

Now to step this cartridge up to true 10mm velocities, you just can’t add more of the same powder I’m using. The quicker burning powers I’m achieving these results at could be dangerous and erratic trying to get to those velocities. A slower burning powder would be more desirable to use to prevent running at that powder’s absolute maximum.

Conversely, the powder I’ve used to push the same bullet to 1167fps/210pf will be inconsistent and inaccurate if I tried to reduce the load/velocity anywhere close to the velocities of the quicker burning powder.


For 10mm light loads you want to use something along the burn rate chart like Tightgroup, Sport pistol, green dot, N320, WST, AA#2 HP38/Win 231. To achieve higher velocities you need to move up to slower burning powders like CFE pistol, HS-6, autocomp, WSF, power pistol, n340, blue dot, etc.

While I’m comparing the above powders by burn rate, their accuracy might vary greatly, even operating in their zone of efficiency, with your particular cartridge, bullet, gun. I push toward 2” and smaller groups at 25 yards. If noise and smoke are your only goal, you can be much less picky within the same burn rates!
 

thor447

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I shoot Glock 10mms, a 20 and 29, in competitions. It is very similar to loading a for .40. But you just can’t interchange the data. I also load .40 and use the same bullet in both, a 180g jacketed hollow point.

One particular .40 load that I developed for bowling pins and USPSA runs 939fps/169pf. This .40 cartridge runs great out of my 10mm guns. But in competition, I have to use a 10mm cartridge. The same powder charge in a 10mm case resulted in an inconsistent burn developing velocities of only 780-830fps. I had to add .5 grain of powder to get it the velocity standard deviation (SD) down in the single digits and it still is down on power compared to the .40 load, making 856fps/154pf.

That 1/2 grain is over 10% of the previous .40 load. Looking back at my load development data on the .40, I got the same (856fps/153pf) velocity with .9 grain less powder. 20% more powder to get the same velocity. Same powder. Same bullet. Both standard Federal primers, although the .40 uses SPP and the 10 uses LPP. The case volume of the .40 vs 10mm makes a real difference. This is also why seating depth can make a difference as it alters the case volume.

Now to step this cartridge up to true 10mm velocities, you just can’t add more of the same powder I’m using. The quicker burning powers I’m achieving these results at could be dangerous and erratic trying to get to those velocities. A slower burning powder would be more desirable to use to prevent running at that powder’s absolute maximum.

Conversely, the powder I’ve used to push the same bullet to 1167fps/210pf will be inconsistent and inaccurate if I tried to reduce the load/velocity anywhere close to the velocities of the quicker burning powder.


For 10mm light loads you want to use something along the burn rate chart like Tightgroup, Sport pistol, green dot, N320, WST, AA#2 HP38/Win 231. To achieve higher velocities you need to move up to slower burning powders like CFE pistol, HS-6, autocomp, WSF, power pistol, n340, blue dot, etc.

While I’m comparing the above powders by burn rate, their accuracy might vary greatly, even operating in their zone of efficiency, with your particular cartridge, bullet, gun. I push toward 2” and smaller groups at 25 yards. If noise and smoke are your only goal, you can be much less picky within the same burn rates!
And this is why I call @Mad Professor when I have a reloading question.....
 

CharlieWH2O

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I wanna see the G Lock that fires this

12d04191384d84756a9642eae246e2ca.jpg




Then I wanna see you shoot it.

iu


Now get him to shoot it.
 

bambihunter

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Now you guys are talking my caliber (see my signature tag line). I have been a 10mm fan since the beginning. I've got quite a few of them including the original - Bren Ten. I've got early Colt's (Delta Elite, Double Eagle, Delta Gold Cup, etc), a S&W 610, all 6 S&W 10mm semi-auto models (1006, 1026, 1046, 1066, 1076, and 1086), all 3 Glock models (G20, G29, and G40), around a dozen Dan Wesson Razorback and Patriots, Springfield Linkless, Omega, and Omega Match's, and one of my favorite 10mm's to shoot - a Star Megastar. I've also got a few conversions. One of the craziest conversion might be an AMT Backup DAO .40 S&W converted to 10mm. It is about the size of a Kel-Tec P3AT (or Ruger LCP).
I get a kick out of the thought that our FBI agents couldn't handle the full power 10mm loads. My wife can shoot them one handed.

I don't get too creative on my reloads but after acquiring a few 5 gallon buckets full of 10mm brass over the last 35 years, I finally started reloading it. I generally use Blue Dot or 800x and after working up the loads first, I generally shoot them in the upper 85% power range.
I could talk these things all day long but it is about time to go home. ;-) I am near the OKC area. If someone truly wants to shoot some of these for comparison, we can maybe work something out after all this craziness settles down.

Here's the 3 Glock 10mm models (G40 MOS, G20, G29) in one pic for comparison.
20150901_202549_001.jpg

AMT Backup .40 converted to 10mm auto and Kel-Tec P3AT .380. This one is a handful.
20160302_161907-edited.jpg

My S&W "10 ring" with all 6 models
100_0398(edited800x600).JPG

Bren Ten Special Forces Light (SFL). I am still looking for the blued version called the Special Forces Dark (SFD) if anyone knows of one for sale.
pix553113499.jpg

Dan Wesson Razorbacks (from 1 of 150 series) and 1 Patriot
20170719_234246-edited.jpg

Star - Megastar in Blued finish (also have Starvel finished ones). Due to the ergonomics and weight, this gun is an absolute joy to shoot with even the most powerful loads.
pix053104560.jpg
 

O4L

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Now you guys are talking my caliber (see my signature tag line). I have been a 10mm fan since the beginning. I've got quite a few of them including the original - Bren Ten. I've got early Colt's (Delta Elite, Double Eagle, Delta Gold Cup, etc), a S&W 610, all 6 S&W 10mm semi-auto models (1006, 1026, 1046, 1066, 1076, and 1086), all 3 Glock models (G20, G29, and G40), around a dozen Dan Wesson Razorback and Patriots, Springfield Linkless, Omega, and Omega Match's, and one of my favorite 10mm's to shoot - a Star Megastar. I've also got a few conversions. One of the craziest conversion might be an AMT Backup DAO .40 S&W converted to 10mm. It is about the size of a Kel-Tec P3AT (or Ruger LCP).
I get a kick out of the thought that our FBI agents couldn't handle the full power 10mm loads. My wife can shoot them one handed.

I don't get too creative on my reloads but after acquiring a few 5 gallon buckets full of 10mm brass over the last 35 years, I finally started reloading it. I generally use Blue Dot or 800x and after working up the loads first, I generally shoot them in the upper 85% power range.
I could talk these things all day long but it is about time to go home. ;-) I am near the OKC area. If someone truly wants to shoot some of these for comparison, we can maybe work something out after all this craziness settles down.

Here's the 3 Glock 10mm models (G40 MOS, G20, G29) in one pic for comparison.
View attachment 208321

AMT Backup .40 converted to 10mm auto and Kel-Tec P3AT .380. This one is a handful.
View attachment 208322

My S&W "10 ring" with all 6 models
View attachment 208323

Bren Ten Special Forces Light (SFL). I am still looking for the blued version called the Special Forces Dark (SFD) if anyone knows of one for sale.
View attachment 208324

Dan Wesson Razorbacks (from 1 of 150 series) and 1 Patriot
View attachment 208331

Star - Megastar in Blued finish (also have Starvel finished ones). Due to the ergonomics and weight, this gun is an absolute joy to shoot with even the most powerful loads.
View attachment 208333
Wow! Great collection!
 

El Pablo

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Now you guys are talking my caliber (see my signature tag line). I have been a 10mm fan since the beginning. I've got quite a few of them including the original - Bren Ten. I've got early Colt's (Delta Elite, Double Eagle, Delta Gold Cup, etc), a S&W 610, all 6 S&W 10mm semi-auto models (1006, 1026, 1046, 1066, 1076, and 1086), all 3 Glock models (G20, G29, and G40), around a dozen Dan Wesson Razorback and Patriots, Springfield Linkless, Omega, and Omega Match's, and one of my favorite 10mm's to shoot - a Star Megastar. I've also got a few conversions. One of the craziest conversion might be an AMT Backup DAO .40 S&W converted to 10mm. It is about the size of a Kel-Tec P3AT (or Ruger LCP).
I get a kick out of the thought that our FBI agents couldn't handle the full power 10mm loads. My wife can shoot them one handed.

I don't get too creative on my reloads but after acquiring a few 5 gallon buckets full of 10mm brass over the last 35 years, I finally started reloading it. I generally use Blue Dot or 800x and after working up the loads first, I generally shoot them in the upper 85% power range.
I could talk these things all day long but it is about time to go home. ;-) I am near the OKC area. If someone truly wants to shoot some of these for comparison, we can maybe work something out after all this craziness settles down.

Here's the 3 Glock 10mm models (G40 MOS, G20, G29) in one pic for comparison.
View attachment 208321

AMT Backup .40 converted to 10mm auto and Kel-Tec P3AT .380. This one is a handful.
View attachment 208322

My S&W "10 ring" with all 6 models
View attachment 208323

Bren Ten Special Forces Light (SFL). I am still looking for the blued version called the Special Forces Dark (SFD) if anyone knows of one for sale.
View attachment 208324

Dan Wesson Razorbacks (from 1 of 150 series) and 1 Patriot
View attachment 208331

Star - Megastar in Blued finish (also have Starvel finished ones). Due to the ergonomics and weight, this gun is an absolute joy to shoot with even the most powerful loads.
View attachment 208333

You sir, might have a problem. I like it. I just can’t imagine feeding all those babies ;).
 
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