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Reloading dies for 7.5 swiss

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lamontagne0527
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Reloading dies for 7.5 swiss

#1 Post by lamontagne0527 » Tue Nov 28, 2017 12:41 pm

I'm going to start reloading 7.5x55 for my gewehr 1911 and am wondering about die selection. Will the 7.5 swiss Lee die set be sufficient for the task? The reason I ask is I noticed Hornady I believe has 2 die sets for the 7.5x55 marked just 7.5 swiss (for rifle not revolver) and then another set for 7.5 k31 reloading. Is there a significant difference or are the Lee sets more than adequate for the gewehr 1911 chamber?

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Re: Reloading dies for 7.5 swiss

#2 Post by Rapidrob » Tue Nov 28, 2017 5:05 pm

Yes, there is a difference in die sizes internally. If you have brass fired in a K-31 and neck sized only for your M-1911 or K-11, you would not be able to close the bolt.
For a M1911 you want the Hornandy Full Length dies or the NEW RCBS dies ( not older ones).
If loading for the K31 you can use the LEE dies with no problem but not for the M1911.
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Re: Reloading dies for 7.5 swiss

#3 Post by lamontagne0527 » Tue Nov 28, 2017 5:15 pm

Alright so the Lee dies are a no go for the gewehr 1911. I wasn't aware there was that large of a difference in chamber sizes since both the 1911 and k31 used standard gp11 ammo. Thanks for the heads up.

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Re: Reloading dies for 7.5 swiss

#4 Post by Rapidrob » Tue Nov 28, 2017 9:16 pm

It isn't the chamber size,its the die makers got the taper wrong for the 1911 rifles. Had they made the dies for GP-11 there would be no problem. They used fired cases from a K-31.
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Re: Reloading dies for 7.5 swiss

#5 Post by sowbelle » Wed Nov 29, 2017 12:48 pm

I have read on many different sources that the Redding full length sizing die is the best to use for all 7.5 Swiss chambers. I use it and have never experienced any issues. Just my .02😃

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Re: Reloading dies for 7.5 swiss

#6 Post by Rapidrob » Wed Nov 29, 2017 10:07 pm

I use Reading dies but they are expensive.
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Re: Reloading dies for 7.5 swiss

#7 Post by BoltOperated » Sat Feb 17, 2018 6:45 pm

Rapidrob wrote:
Tue Nov 28, 2017 9:16 pm
It isn't the chamber size,its the die makers got the taper wrong for the 1911 rifles. Had they made the dies for GP-11 there would be no problem. They used fired cases from a K-31.
My God, seriously? Using fired cases (from any firearm) as a baseline for designing dies to be used by the an entire market? I always knew the Redding dies were the go-to but had no idea the others were that flawed.
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Re: Reloading dies for 7.5 swiss

#8 Post by Rapidrob » Sun Feb 18, 2018 8:55 am

Not so much flawed but not to the original M1911 specs. This is more common than you'd think.
I have seen this in .30 Carbine, 7.62x51mm and .30-40 Krag dies. the carbine and Krag dies were cut with a worn reamer. The 7.62 had the shoulder too far forward preventing any of my rifles from closing the bolt.( Lyman dies)
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Re: Reloading dies for 7.5 swiss

#9 Post by professrh » Sun Feb 18, 2018 5:46 pm

I don't know what I'm doing wrong, but I have successfully loaded for my k31s, my g96/11, and my k11, using only the Lee dies.

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Re: Reloading dies for 7.5 swiss

#10 Post by lamontagne0527 » Mon Feb 19, 2018 11:20 am

professrh wrote:
Sun Feb 18, 2018 5:46 pm
I don't know what I'm doing wrong, but I have successfully loaded for my k31s, my g96/11, and my k11, using only the Lee dies.
[/quote

So your not having any chambering issues on the older rifles? They chamber just fine? My main worry is to buy the dies (about 50 bucks up here in Canada) and then have them not chamber in my Gewehr 1911 long rifle.

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Re: Reloading dies for 7.5 swiss

#11 Post by Smokey » Mon Feb 19, 2018 9:36 pm

Standard Lee 7.5 Swiss dies seem to work fine for all the Swiss 7.5 straight pull rifles. I believe it's Redding that makes a FL sizing die for the slightly larger K31 chamber (wider in the shoulder area). You can also have LEE make a neck-only collet die; but there's a caution with that approach. You have to keep pressures down or the fired cases won't come out of the chamber after two or three uses. I have found that alternating full-powered loads and very mild "mouse loads" with a batch of cases avoids the extraction problems.
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Re: Reloading dies for 7.5 swiss

#12 Post by slowbob2 » Wed Feb 21, 2018 10:15 am

There is a lot of confusion about 7.5mm dies due to the terrible " article " from years ago that can be found in the old section of Surplusrifles . The guy who wrote it did not understand reloading and blamed the dies . About everything he said about 7.5mm Swiss is wrong and sadly many people went by what was in the article .

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Re: Reloading dies for 7.5 swiss

#13 Post by slowbob2 » Wed Feb 21, 2018 10:21 am

Smokey wrote:
Mon Feb 19, 2018 9:36 pm
Standard Lee 7.5 Swiss dies seem to work fine for all the Swiss 7.5 straight pull rifles. I believe it's Redding that makes a FL sizing die for the slightly larger K31 chamber (wider in the shoulder area). You can also have LEE make a neck-only collet die; but there's a caution with that approach. You have to keep pressures down or the fired cases won't come out of the chamber after two or three uses. I have found that alternating full-powered loads and very mild "mouse loads" with a batch of cases avoids the extraction problems.
If you are having extraction problems , it has nothing to dues with neck sized cases . If the round chambered easily , you have a problem somewhere else . Cases are too long , or high pressure [ the 7.5 Swiss is not a .308 bore and a rifle with an extra tight bore will make extra pressure with some .308 bullets and normal load data ] .

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Re: Reloading dies for 7.5 swiss

#14 Post by Smokey » Wed Feb 21, 2018 6:43 pm

If pressures are kept below around 35,000 psi, there's usually no extraction problems. I normally loaded K31's to around 42,000 psi using 180gr bullets. Those would give extraction problems on the second or third loading. I've also seen stiff extraction using similar type loads with neck-sizing in turnbolt rifles. The issue has the brass being basically expanded into a tight fit with repeated use. Brass does not expand back completely after firing. Each time it gets a little larger. My "mouse loads" basically did a slight resize from the firing pin driving the case into the chamber. The low pressure didn't expand the case much.
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Re: Reloading dies for 7.5 swiss

#15 Post by slowbob2 » Wed Feb 21, 2018 10:30 pm

None of that really works like that . You do not know what your pressures are unless you are shooting with strain gauges on your rifles . Your 10 lb firing pin can not resize brass .

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