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Joined: Nov 2003
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Campfire Ranger
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OP
Campfire Ranger
Joined: Nov 2003
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the ability to shoot 40SW as practice ammunition in a G20 or G40 is intriguing. I am not sure it would work in the 1911 style pistols but having seen reports than many shoot 40's in their 10mm glocks and I believe someone here has done it as well. I think Lee dies say that if you buy the 40SW die set you can load 10mm with it much the same as 38 and 357 magnum. I don't know if this would work with a 1911 style gun, but I am interested in trying it in a glock. any comments?
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Campfire Kahuna
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Campfire Kahuna
Joined: Nov 2003
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reloading gear is cheap. I just buy another set of dies for calibers like .38/.357, and leave them set for a single caliber. Makes it easier, and reduces mistakes.
Sam......
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Joined: Jun 2002
Posts: 131,961 Likes: 54
Campfire Sage
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Campfire Sage
Joined: Jun 2002
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the ability to shoot 40SW as practice ammunition in a G20 or G40 is intriguing. I am not sure it would work in the 1911 style pistols but having seen reports than many shoot 40's in their 10mm glocks and I believe someone here has done it as well. I think Lee dies say that if you buy the 40SW die set you can load 10mm with it much the same as 38 and 357 magnum. I don't know if this would work with a 1911 style gun, but I am interested in trying it in a glock. any comments? You can do it in a pinch, but it's likely putting undue strain on the extractor, since it doesn't head-space correctly, so the extractor hook is all that holds it in place. Get yourself a .40 S$W barrel instead, and just do a switch out when you want to shoot one or the other. The 10mm magazines work fine for both.
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Joined: Apr 2008
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Campfire Ranger
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Campfire Ranger
Joined: Apr 2008
Posts: 17,209 Likes: 9 |
Hornandy dies work great too.
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Joined: Nov 2003
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Campfire Ranger
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OP
Campfire Ranger
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Seems like some think it is a fine practice and others do not. How would it put strain on the extractor are the case heads identical dimensions?
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Joined: Aug 2003
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Campfire Outfitter
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Campfire Outfitter
Joined: Aug 2003
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Because both cartridges are designed to head space on the case mouth. The shorter .40 S&W case will either be held against the breech face by the extractor, slip off the extractor and slide forward in the chamber where the firing pin cannot reach the primer, or some combination of both where the firing pin ignites an unsupported case head and kB!
Forgive me my nonsense, as I also forgive the nonsense of those that think they talk sense. Robert Frost
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Joined: Aug 2007
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Campfire Sage
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Campfire Sage
Joined: Aug 2007
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I wouldn't make a habit of it.
Dave
Trump being classless,tasteless and clueless as usual. Sorry, trump is a no tax payin pile of shiit. My young wife decided to play the field and had moved several dudes into my house
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Joined: Apr 2017
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Campfire Regular
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Campfire Regular
Joined: Apr 2017
Posts: 1,368 |
Seems like some think it is a fine practice and others do not. How would it put strain on the extractor are the case heads identical dimensions? Because both the 40 and 10 headspace on the front edge of the cartridge rim. Headspace meaning how far the cartridge is allowed to slide into the chamber. If you put a shorter 40 Short and Weak into a 10mm chamber, the front of the cartridge will not hit the front of the chamber. The only thing holding the 40SW cartridge in place against the breech face of the slide is the extractor. When you pull the trigger and release the firing pin, the 40SW cartridge doesn't have the front of the chamber to resist impetus created by the forward motion of the firing pin, just the extractor holding it against the breach face. Hence, creating more stress on the extractor. Because the 40SW is shorter than a 10mm, the sharp edge at the front of the chamber (where a 10mm normally headspaces), is completely exposed. As the 40's projectile leaves the cartridge is has an approximate 1/8" section of chamber it has to jump. Doing so allows the bullet to wobble slightly, and impact the edge of the 10mm's front chamber at a slightly angle. Over time, this will erode the crispness of that chamber edge. It will also deposit copper, lead, and power residue in front of this lip which, I might add, is a bitch to clean out. It its not the same as a 38 special and 357 mag, as those cartridges headspace on the rim. The rim is wider than the cartridge and prevents the cartridge from being pushed into the chamber. Can it be done. Yes. Does it work. Yes. Would I advise it. No.
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Campfire Tracker
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Campfire Tracker
Joined: Jul 2004
Posts: 6,696 Likes: 5 |
Of course you can load 10 & .40 with the same die set, I've done it for years on a Square Deal B.
I also fired 3 of first .40's to hit town in my Delta Elite, all fed & fired. Never saw fit to do that again.
'Four legs good, two legs baaaad." ---------------------------------------------- "Jimmy, some of it's magic, Some of it's tragic, But I had a good life all the way." (Jimmy Buffett)
SotG
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Campfire Regular
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Campfire Regular
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As to the reloading set up. You can obsoletely use the same dies; however, you will need to adjust and reset them every time you switch calibers. Generally pistol sets have three dies: depriming, resizing/flaring, and seating/crimping. Only the depriming die would not need to be reset between calibers. For $40 or so, buy a second set of dies. The seating and crimping die is super finicky and plays a significant part in accuracy and feeding of the reloaded round. One you get it set up, you don't want to mess with it. I actually use separate seating and crimping dies to ensure more exact tolerances.
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Jul 2004
Posts: 46,965 |
Hornandy dies work great too. They rust nicely for me, too.
We may know the time Ben Carson lied, but does anyone know the time Hillary Clinton told the truth?
Immersing oneself in progressive lieberalism is no different than bathing in the sewage of Hell.
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Jul 2004
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the ability to shoot 40SW as practice ammunition in a G20 or G40 is intriguing. I am not sure it would work in the 1911 style pistols but having seen reports than many shoot 40's in their 10mm glocks and I believe someone here has done it as well. I think Lee dies say that if you buy the 40SW die set you can load 10mm with it much the same as 38 and 357 magnum. I don't know if this would work with a 1911 style gun, but I am interested in trying it in a glock. any comments? I wouldn't.
We may know the time Ben Carson lied, but does anyone know the time Hillary Clinton told the truth?
Immersing oneself in progressive lieberalism is no different than bathing in the sewage of Hell.
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Joined: Jun 2017
Posts: 125
Campfire Member
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Campfire Member
Joined: Jun 2017
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The dies are the same. I have a set of Dillon 10mm/40 dies in my 550 and a set of RCBS 10mm/40 for the single stage.
I have a glock 20 and picked up a 40 barrel for it for around 100 dollars. Worth the piece of mind IMO, likely more accurate as well.
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Campfire Sage
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Campfire Sage
Joined: Jun 2002
Posts: 131,961 Likes: 54 |
The dies are the same. I have a set of Dillon 10mm/40 dies in my 550 and a set of RCBS 10mm/40 for the single stage.
I have a glock 20 and picked up a 40 barrel for it for around 100 dollars. Worth the piece of mind IMO, likely more accurate as well. Me too. In fact, the .40 barrel is the one I keep in it. If I ever need a bear defense gun (or if an African lion or gorilla escapes from the local zoo), I'll switch it to 10mm. In case an elephant escapes the zoo, I've got a .375 H&H, stoked with solids, on standby, LOL.
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Joined: Sep 2014
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Campfire Ranger
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Campfire Ranger
Joined: Sep 2014
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How often does the case mouth actually touch the end of the chamber.
Sami specs set chamber length at .992 min Case length is .992 -.010 That means with a min chamber, an in-spec, but minimum case is .010 short. That alone is probably going to force the extractor to be the headspace determining factor. But, notice .992 is the min for the chamber, there is not a max. That means your chamber is almost certainly going to be somewhat longer.
No experience with doing this, but I have followed it closely as a G29 really interests me. Firing pin length is why this is commonly done in Glocks, their pin is short and does not protrude very far. If the 40 case got free of the extractor, inertia would drive it deep into the chamber, the firing pin couldn't reach it.
A 1911 firing pin can go way out there, lighting the primer on a cartridge a long ways in front of the breech face.
Last edited by Dillonbuck; 08/12/17.
Parents who say they have good kids..Usually don't!
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Campfire Tracker
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Campfire Tracker
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the ability to shoot 40SW as practice ammunition in a G20 or G40 is intriguing. I am not sure it would work in the 1911 style pistols but having seen reports than many shoot 40's in their 10mm glocks and I believe someone here has done it as well. I think Lee dies say that if you buy the 40SW die set you can load 10mm with it much the same as 38 and 357 magnum. I don't know if this would work with a 1911 style gun, but I am interested in trying it in a glock. any comments? jimmy, I know we've discussed this at least twice in the past year, and you commented on the threads. I even posted a picture showing why it's OK in a Glock but NOT in a 1911. What is the question again? On the reloading dies - yes of course you can use the same die set, from any brand. I set mine for the 40 S&W, and use spacer rings (like RCBS used to supply with 38/357 dies) under the lock rings for 10mm. No re-adjustment required. You can do it in a pinch, but it's likely putting undue strain on the extractor, since it doesn't head-space correctly, so the extractor hook is all that holds it in place.
Get yourself a .40 S$W barrel instead, and just do a switch out when you want to shoot one or the other. The 10mm magazines work fine for both.
We've discussed that too, and the whole "straining the extractor" thing is a made-up problem that doesn't exist. If you understand how a Glock works and the small forces involved in chambering a round and the striker impact, you'd realize those forces are tiny compared to the strength of the extractor. It's fine, really. Dillonbuck's point is good too; a lot of semi-auto pistols don't really end up headspacing on the case mouth, the extractor holds the case because of tolerances as he points out. There are those who think 40 in a 10mm Glock is not a good idea, but I've never had any of those people explain a logical reason why. Any takers?
Last edited by Yondering; 08/12/17.
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Campfire Tracker
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Campfire Tracker
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I've only found one problem with 40 S&W in a Glock 10mm barrel - when using lead bullets (lubed or powder coated) the bullets can start to swell into the empty chamber space in front of the 40 case, and then shave some lead when being squeezed back down at the front of the chamber. This usually only shows up as lead smoke coming out of the barrel, and accuracy can still be very good.
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Campfire Ranger
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Campfire Ranger
Joined: Dec 2002
Posts: 26,080 Likes: 16 |
Since the discussion is about reloaded ammo, what is the point in loading 40 to shoot in a 10mm? It is pretty darned simple to load 10 mm to 40 S&W power levels.
Now, shooting factory 40 because it is cheaper than buying 10 mm is a different story.
People who choose to brew up their own storms bitch loudest about the rain.
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Campfire Tracker
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Campfire Tracker
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How often does the case mouth actually touch the end of the chamber.
Sami specs set chamber length at .992 min Case length is .992 -.010 That means with a min chamber, an in-spec, but minimum case is .010 short. That alone is probably going to force the extractor to be the headspace determining factor. But, notice .992 is the min for the chamber, there is not a max. That means your chamber is almost certainly going to be somewhat longer.
No experience with doing this, but I have followed it closely as a G29 really interests me. Firing pin length is why this is commonly done in Glocks, their pin is short and does not protrude very far. If the 40 case got free of the extractor, inertia would drive it deep into the chamber, the firing pin couldn't reach it.
A 1911 firing pin can go way out there, lighting the primer on a cartridge a long ways in front of the breech face. Just for perspective. .010" is the thickness of two sheets of regular note book paper.
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Campfire Sage
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Campfire Sage
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There are those who think 40 in a 10mm Glock is not a good idea, but I've never had any of those people explain a logical reason why. Any takers?
My primary reason is that few 10mm shooters are taking advantage of the 10mm case and would be better off owning a .40 "short and weak" instead of coming up with stupid reasons to mismatch schit that was never intended to be mismatched. My secondary reason is that you can type GLOCK on a GLOCK thread all day and speak at the water cooler about your GLOCK for another entire day but all it's really telling people is that you can interchange the 10mm and the 40 as long as it's chambered for the 10mm regardless of design or manufacturer. And before anybody slings Big Brother accusations at me I'll simply point out that the very same arguments occur on the very same subject, on the very same board, with the very same people, time and time again. But if it works for folks, by all means. Clark
Trump being classless,tasteless and clueless as usual. Sorry, trump is a no tax payin pile of shiit. My young wife decided to play the field and had moved several dudes into my house
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