7.5 Swiss w/ Lee C312-155-2R

[Ricochet]

Possibly. I have to seat normal .308" bullets so that the tapered ogive begins almost right at the case mouth. I think it could be a replacement barrel, as the action has been reblued. (You can tell by bluing on the bottom of the tang.) The machining marks are still present in the throat.

[chuebner]

[QUOTE=have maybe a touch more throat erosion than yours?

Bill[/QUOTE]

On my '46' K31 I can seat bullets .125 farther out than on my '53' K31. So i guess the '46' was shot more and has more throat erosion. Both rifles slug out at .297 X .307.

Charlie

[robertbank]

Well proud as punch I was today. I had 20 312155 Lee bullets sized to .311 and off I went. Never shot the K 31 before so today was going to be a great day. WRONG! Now I know why I used to have my boss telll me to pay attention to details! Needless to say all my cartridges were to long. I even made up a dummy round to test but the real dummy was doing the testing and I wasn't closing the bolt all the way forward. Well the bullets are now seated properly and I now have 20 rds that will chamber.

OAL is 2.60". 16 gr 2400. Tomorrow we shall see if I can match some of the above efforts at 50 yards.

Take Care

Bob

[26Charlie]

Primersp - when the first batch of 1911 Swiss rifles came into the US back around 1966 I bought a short rifle, a long rifle, and a Cadet single-shot rifle. None cost me more than $35, since there was no ammo available. But we found that the .284 Win case would size easily to fit. It was sort of a small joke - hey, let's make a .30 - .284 wildcat cartridge! Oops, already been done - its called the .30 Swiss.
When the K31 rifles came in they were rare, going for about $250 in 1988. I bought one, then bought another in 2004 for $150. All of them are fine shooters with cast bullets.
Only problem I had with any of them is that the Cadet rifle wants the case trimmed about a mllimeter, all the others will accept the .30-.284 case as it comes out of the RCBS sizing die.
So your wildcat is legal in France, but not the military cartridge, I take it?

[Kuato]

I use the LEE 309200GC with WC860 & a mag primer. Chambers fine & burns remarkably clean. I fill the case & no fillers. Boolits are sized to .309. My K31 seems to like them just fine.

[Wolowizard]

Hello everyone, sorry for the late reply and my english (i'm french)
K31 owner and newb to the reloading , i'm experiencing my first reloaded cartridge , bought some LEE C312-255-2R already cast
took a stick and measure the maximum COL with this bullet

WAS 67mm/2.6378 inch

*** , is it very short , with an safety OAL of 66mm the cartridge is excessively short



the gas check is very deep inside the cartridge , is it normal for you ? what is you OAL with this bullet please ?

many thanks !

[Texas by God]

Is this a zombie thread?
I ran into short throat issues when loading for a K31 years ago. Seat bullet as far out as you can- and still chambers. It all depends on where the ogive on the bullet ends up.
The gas check down below the neck is a non issue in my experience.

Sent from my SM-A716U using Tapatalk

[Wolowizard]

Allright ! many thanks , i will continue this way and fire the first cartridge with a string :d

[technojock]

When I first shot my K31 I loaded up flat point boolits meant for the .30-30 only to find they wouldn't feed. I checked one for fit in the chamber but I didn't try loading it from the mag. I had to single load them but the accuracy was very good.

Tony

[sse]

Dang nabbit, now I have drag out my K31 and put some loads together. Every time I go on here I start another quest..

[Texas by God]

If you can get them in France, the Hornady 150gr spire point works well in the K31.
Try as I might, none of my loads matched the G11 surplus ammo in accuracy, though.
By the way, Welcome to the forum!

Sent from my SM-A716U using Tapatalk

[Black Beard]

I use 180 gr Lee .309 round nose on top of 25 grains on 5744/ LovexD060. Works fine at short ranges and fits in with the ranges ~1500 ft-lb energy limit.

In France you might be able to get the 174 grain 30 cal PPU FMJ bullets, which are meant to be really good.