10mm or .40 Super
I am going to buy myself a 6" conversion barrel for my G21 once I save the money. I was dead-set on a 10mm barrel until I started reading about the .40 Super. Is there really any reason to choose one over the other as far as performance, feeding, pressures, etc?
Ammo price is really not too much concern because I will still shoot mainly .45 ammo though it. I will just shoot enough of the .40/10mm ammo through it to deem reliable and then use that set-up for hunting carry only. I can use single stack G21 mags for the .40 and still use them for the .45 vs. having to buy 10mm mags.
Any input from anybody on this?
Jon
Ammo price is really not too much concern because I will still shoot mainly .45 ammo though it. I will just shoot enough of the .40/10mm ammo through it to deem reliable and then use that set-up for hunting carry only. I can use single stack G21 mags for the .40 and still use them for the .45 vs. having to buy 10mm mags.
Any input from anybody on this?
Jon
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Well here are a couple concerns...
1.) Will the extractor system of the 45 slide and breechface work on the 10mm sized case? Reliably? I know the 9mm works with the 40 S&W, ut do not take it for granted that the 10mm(same size as 40 S&W head and rim), will work with the 45 ACP.
That said, that leaves you to the 40 Super, which is the 45 ACP +P necked down to 40 caliber.
2.) How is the ammunition availability for this round? I know Triton used to be the manufacturer for the line of "Super's" in 35, 50, and 45 Super. Not sure what is really out there for those, these days. I know the Super's were designed around the 1911 platform, that was enhanced by ACE.
Just some food for thought.
Best0 -
quote:Originally posted by tsr1965
Well here are a couple concerns...
1.) Will the extractor system of the 45 slide and breechface work on the 10mm sized case? Reliably? I know the 9mm works with the 40 S&W, ut do not take it for granted that the 10mm(same size as 40 S&W head and rim), will work with the 45 ACP.
That said, that leaves you to the 40 Super, which is the 45 ACP +P necked down to 40 caliber.
2.) How is the ammunition availability for this round? I know Triton used to be the manufacturer for the line of "Super's" in 35, 50, and 45 Super. Not sure what is really out there for those, these days. I know the Super's were designed around the 1911 platform, that was enhanced by ACE.
Just some food for thought.
Best
Besides Doubletap, I did not see anyone else who makes the .40 Super. If I am going to shoot that caliber, I want to get the most out of the round, so that isn't a major issue.....unless they discontinue making it.
You make a good point on the extractor. I have not found much info. at all about the 45-to-10mm conversions on the web, so that would be a "self-test" thing. That is another reason I was leaning towards the .40. I have read a lot of info. about that conversion working well. Only issues seems to be the bottleneck cartridges feeding in the doublestack .45 mags. Everyone seems to solve the problem by using the 10 rounders.
I think I am talking myself into the .40 Super.
Jon0 -
Better to just get the 10mm instead of this ".40 Super". The typical 10mm is just a "+P" of .40S&W or about the same from being under loaded.
I wonder what the numbers are between full "Norma" load 10mm to this .40 Super? Unless all the powder burns in short barrels as .40 Super?0 -
quote:Originally posted by yoshmyster
Better to just get the 10mm instead of this ".40 Super". The typical 10mm is just a "+P" of .40S&W or about the same from being under loaded.
I wonder what the numbers are between full "Norma" load 10mm to this .40 Super? Unless all the powder burns in short barrels as .40 Super?
This is incorrect...the 40S&W was developed because the lesser statured/trained FBI agents could not handle the 10mm Norma, as designed. The 10mm is not just a +P 40S&W. I believe the original norma load was a 200 grain bullet at 1300 FPS. The 40 S&W was developed around 180 grain bullets at 900-1000 FPS.
If you want to know what the difference is between the real 10mm Norma, and the 40 Super, just look at the Double Tap specs...they are close.
Best
EDIT 1
It never hurts to have more guns than what ones percieves as needs. I would say the heck with the barrels, and have both, Glcks...a 20, and a 21, in 10mm, and 45 ACP respectively
Best0 -
quote:Originally posted by tsr1965
quote:Originally posted by yoshmyster
Better to just get the 10mm instead of this ".40 Super". The typical 10mm is just a "+P" of .40S&W or about the same from being under loaded.
I wonder what the numbers are between full "Norma" load 10mm to this .40 Super? Unless all the powder burns in short barrels as .40 Super?
This is incorrect...the 40S&W was developed because the lesser statured/trained FBI agents could not handle the 10mm Norma, as designed. The 10mm is not just a +P 40S&W. I believe the original norma load was a 200 grain bullet at 1300 FPS. The 40 S&W was developed around 180 grain bullets at 900-1000 FPS.
If you want to know what the difference is between the real 10mm Norma, and the 40 Super, just look at the Double Tap specs...they are close.
Best
The way the 10mm is loaded it's very light is what I was saying. Actually I did state that initially.0 -
Yeah, the 10mm isn't a +P .40SW, the .40SW is a "-P" 10mm.
But it mostly amounts to the same thing. The 10mm shoots similar caliber bullets from a similar but slightly longer case, at a good bit higher velocity.
The reason I say pick 10mm here, is because this round will probably be around in 10 years, and you can buy it in a well-stocked gunstore.
Regardless of the merits of .40 super as a round, not sure either of the above two things can be said of it.0 -
I bought .400 Cor-bon rounds and a barrel for a 1911, but I never did anything with it and sold them off a while ago. Like any proprietary or wildcat round, finding ammo for the .400 CB without an internet search was impossible. I'm going to hazard a guess that the .40 Super will also be a hassle to feed, while rounds to feed the 10mm (believe it or not) will be easier to come by. I'd personally stick with a more established round. 0 -
I'd personally sell the G21 and get a G20. But, then again I am a 10mm nut for sure. I probably have 40+ guns in that one caliber. 0 -
quote:Originally posted by bambihunter
I'd personally sell the G21 and get a G20. But, then again I am a 10mm nut for sure. I probably have 40+ guns in that one caliber.
I had a G20 for a month or so. Brought it up to show my old man and we took it out and shot it. He asked if he could carry it in the woods and I said sure. A week later he handed me over a rifle he had and I have not seen the G20 since. [:D] He picked up a G29 a few months back and loves that too. He has fallen in love with the 10mm.
Maybe I will some day get me another G20.
Jon0 -
I have a 20C in 10mm and can shoot 40S&W and 357Sig by just changing the barrels. The same magazines work for all three rounds. 0
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