What should I put in my 7.5 swiss?

[Rustle in the Bushes]

Im about to start packing in my own 7.5 swiss! Im getting all of my gear together but have yet to decide what type of bullet etc. I know its different for every gun etc etc. but what would be a good starting point that is safe/cheap with decent accuracy?

Much thanks

[cracked butt]

Cheap is wasted on a K-31.
Start with 168-175 gr SMKs or 175 gr Hornady AMAXs.
Watch your OALs carefully, the K-31s have a very short throat.
I use IMR4064 using .308 winchester data, and a Federal 210 primer.
RL-17 is supposed to be really good, but I haven't tried it yet, there are probably a few people here that have though.

[Dave R]

I agree with cracked. And the load he describes seems pretty close to the GP-11 ammo the gun was designed for.

However, I have been known to be a little cheap...

Here's a load I use that is identical to a load I use in my .308. Works well. Probably not as accurate as a 175 gr. bullet would be.

-150gr. Speer Hot-Cor or Sierra softpoint
-43gr. H335
-CCI 250 primer.

I took my first hog with my K-31 and this load. Terminal performance on the hog was excellent.

You'll find lots more load data at www.swissrifles.com

[mwells72774]

168gr Vmax
BLC(2) mid 50's
CCI250
PPU brass

[Clark]

7.5mm Swiss, K-31, 284 brass sized with Lee die, CCI200

1) 168 gr. Sierra .308 Match King

a) 42 gr. IMR4895 ok, kinda wimpy
b) 45.5 gr. IMR4895, ok, primer starting too flatten,


That was a lot of years ago, and those K-31s never got back to the range. They are still waiting for scope mounts.

[Wildalaska]

Without deeply studying it, I bet some euro powder like N160 would be the best


WildgototheswissrifleforumAlaska ™©2002-2011

[Rustle in the Bushes]

hey thanks, brass should come this week (postal strike) and I'll take these recipes into account! Ill let you know how it goes

[zfk55]

RE 17 (and the rest of them) are actually manufacutered in Switzerland at the very same facility that made the original powder for the GP11 cartridge.
It's being hailed as something new from Alliant, but it's not new at all. Just to Alliant.

We now use it for all Swiss rifles we have including the zfk55 Swiss Sniper. The best performing (at long range) projectile for the k31 is a very close clone of the GP11 out of Thun, that being the Berger VLD 175.

Latigo

[hodaka]

Those Bergers are pretty expensive fodder, although a K-31 is probably worth it. I've been using the Privi 175's from Weidners. $93/500 IIRC. I sort by weight and over 4064 can easily get sub MOA.

[Slamfire]

I conducted some load development for the 7.5 Swiss. I have never purchased Swiss ball, but a bud gave me a chance to shoot some across my screens.

AA4350 gave excellent accuracy and just about duplicates Ball velocities with 51.0 grains and a 168 Nosler Match bullet. As you can see 52.0 grains produced velocities over Ball, so I do not recommend that load. It is here for reference.

Instead of AA4350 I am shooting surplus WC852 in the 7.5 Swiss. This is a ball powder, and I purchased my lot from Jeff Barlett at GIBrass.com . It turns out Accurate Arms purchased a 90,000 pound lot of WC852, faster burning than Jeff’s lot, and now it is labeled as 2700. My lot of WC852 shoots extremely well, was dirt cheap, and I am using that up. But if I did not have the surplus powder, I would give IMR4350 or AA4350 a go as it shot very well.

7.5 x 55 Swiss Model K-31

AP11 Swiss Ball headstamp DA 78
24 Mar 04 T = 70 ° F


Ave Vel = 2565
Std Dev = 11
ES = 23
Low = 2551
High = 2574
N= 4

168 gr Nosler Match 51.0 gr AA4350 INDEP brass and primer OAL 2.850
22 Dec 01 T = 58 ° F
Ave Vel = 2536
Std Dev = 17
ES = 45
Low = 2510
High = 2555
N= 9


168 gr Nosler Match 52.0 gr AA4350 INDEP brass and primer OAL 2.850
22 Dec 01 T = 58 ° F
Ave Vel = 2624
Std Dev = 31
ES = 72
Low = 2588
High = 2660
N=5

[zfk55]

Slamfire, when you say "Swiss ball", are you referring to issue GP11? Did you reload Berdan primed?

Latigo

[Slamfire]

Slamfire, when you say "Swiss ball", are you referring to issue GP11?

Maybe it was GP11 and I wrote in my data book AP-11. Won't be the last time I cannot read my own handwriting. It was Swiss out of a Swiss cardboard ammunition container.

Did you reload Berdan primed?

For the data sequence I used INDEP brass which was boxer primed.

Never loaded Berdan.

[zfk55]

Yeah, its GP11. Good schtuff.

Latigo

[Steve in PA]

This is my pet hunting load using Hornady 165gr BTSP and 57.0gr of H414. This target was fired at using my K-31 with open sights at 100yds off of a rest. Ignore the flyer!!

[Claude Clay]

sierra 168gr BTHP with 42 gr Varget and a moderate taper crimp
it makes good groups out to 225 yards which is the range i use it at.