10mm 2400 combo

Mainiac

Well-Known Member
Always read where 2400 aint goodin the 10.
To slow,to bulky,to inaccurate
Ive been shooting 2400 this fall.with a 200 gr bullet,11.5-2400 will do 1200fps,,with splendid accuracy.room for alot more powder,as well.

Guess my point is,dont beleave everything ya read!!

From what ive been able to find,,that 11.5 is around max book.but it dont feel it,,im sure theres another 100 fps to get,but i probaly wont.
 

CWLONGSHOT

Well-Known Member
I am experiencing déjà vu...

(Did you post this elsewhere?). No harm just swore I read & responded already?

I have used but for what ever reason always used AA#7 Longshot and Blue Dot. More recently Power Pistol. I had a issue with my scale and over charged some test cases. When started with PP. I wont say the chgs but will tell you I pushed a deep seated 200g cast bullet past 1400 fps and CASES FELL OUT of the barrel!!! Right then I was sold on PP!! I backed up and stopped @ 1250 as 1200 was my target. If I need more Ill use more gun not abuse/chance a firearm.

CW
 

CZ93X62

Official forum enigma
I have the same feeling CW expressed.......deja vu all over again.

I have never used 2400 in my 10mm pistols. I have used Blue Dot quite a bit, AA-7, and AA-9. I have only fired 180 and 200 grain bullets in the 10mm. I might need to give 2400 a test drive.
 

Snakeoil

Well-Known Member
I swear I did this same exercise a short time ago as well. I just put your load data into GRT and the pressure is so far over the max pressure allowed for 10mm auto that it will not give me a curve, just a BIG warning.

Max pressure for the 10mm is 33359 psi. An 11.2 grain load of 2400 in that cartridge with a 200 grain lead bullet produces 33956 psi and the program says the bullet is going 1488 fps.

So, GRT may have some error, and I only say that because of your chrono readings. To get the MV in the 1200 range, the programs says you need about 9 gr of 2400. My personal experience with GRT numbers using 2400 in rifle calibers is it is about 4% low, in velocity. I have no way to verify the pressures.

I've seen a .38 super blow the grips off a 1911A1 Colt pistol and blow the magazine to the ground from an over-pressure load. Only thing that saved the shooter's hand was the metal inserts in the Pachmayr grips on the pistol. If the grips had been wood, his new nickname might have become "Stumpy". He was a regular at the club and shot in our action pistol matches. We never saw him again after that. He really never grasped the concept of following published guidelines and nearly paid the price. Nobody missed him as we figured he was an accident waiting to happen.
 

CZ93X62

Official forum enigma
I love the 10mm Auto. I wish it had been authorized by my shop, because I would have happily carried it. I don't have any first-hand experience dealing with wounding/stopping capabilities of the 10mm, but at least a dozen exemplars of the 10mm's 40 Short & Weak understudy. The 40 S&W flat WORKS, so I think it is a safe bet that the 10mm would be a very effective goblin stopper.

If personal protection is your venue, the 40 S&W is perfectly adequate. You could say that the 10mm might be gilding the lily just a bit. Depending upon load, the 10mm gains between 200 and 250 FPS over the 40 S&W in a given bullet weight. That makes sense for hunting larger game, certainly--but IME the 40 does well for exchanges of finality.
 

Mainiac

Well-Known Member
Another 2400 topic,,,just reading where 2400 shoots really well in 38 super as well.gonna have to try that next!!
 

richhodg66

Well-Known Member
I have wondered if the old Alcan #7 would be good in 10mm. It was discontinued before the 10mm came along, but the stuff is great in the .357 with 158 grain cast. Kind of figured I could work up a load since I have a keg of it I'm working through.
 

Mainiac

Well-Known Member
I shot up my stash of alcan primers,during this primer famine,,,old,but shot just perfect!!
Looked odd though,the cups are domed,instead of flat.
 

John

Active Member
I have played with Power Pistol and 800 X but WC 820 is the winner for me in the 10 with 180 and 200 gr bullets.
 

JonB

Halcyon member
I have wondered if the old Alcan #7 would be good in 10mm. It was discontinued before the 10mm came along, but the stuff is great in the .357 with 158 grain cast. Kind of figured I could work up a load since I have a keg of it I'm working through.
I still see Alcan #7 (and others) once in a while at Gunshows. When I was talking about working up a load with it for 41 Mag, Ian told me that Ken Waters has a Pet load for a factory cast bullet load equivalent using Alcan #7 ...and now that's JonB's pet load, LOL. I posted about this here a few years ago. Anyway, 10mm is close to 41mag, so it should be good, I'd think.

 
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richhodg66

Well-Known Member
Well, I'm burning a lot of in .357 Magnum loads lately, 9.5 grains at a time. Good stuff, gonna miss it when it's gone.

I need to get back to the 10mm. I really like that pistol and the cartridge has a lot more potential than most semi auto rounds.
 

Mainiac

Well-Known Member
Well, I'm burning a lot of in .357 Magnum loads lately, 9.5 grains at a time. Good stuff, gonna miss it when it's gone.

I need to get back to the 10mm. I really like that pistol and the cartridge has a lot more potential than most semi auto rounds.
Ya,,more speed,more power than a 357,,and because of the automatic action,,way less recoil than a revolver,,,win,all the way around.