Anyone reloading for the 7.5 Swiss? I just bought a K-31 straight pull and am working up loads for it.
So far IMR4350 and 180 grain Nosler BT's look promising.
I need a good hunting load for mediam range hunting of white tail deer and a cheap load for plate shoots.
Mil surp ammo for this rifle is match quality but expensive!!

This is from a guy (Pierre)who did extensive testing with the K31 using a solid machine rest.


(Original K31 load was 174gr. @ 2560fps)


k31 #1 mfg'd 1937

165g

N203......40.5g.........1.69"
BLC2......39g...........1.75"
3031......36g...........1.8"
414.......43g...........1.56"
4064......37g...........1.0"
4831......47g...........1.13


173g

414.......43g...........1.10
4064......39.............97"
BLC2......40g............1.59
4350......38.5g..........1.76
3031......35.............1.97


k31#2 mfg date 1946


165g

3031......36.2g...........1.85"
4064......37g.............1.0"
414.......43.1g...........1.65"
4831......47g.............1.23"


173g

414.......43..............1.15"
BLC2......40g.............1.83"
4064......39..............0.91"
4350......38.1g...........1.94"
3031......35..............1.75


k31#3 mfg date 1955


165g

N203......40g..............1.98"
3031......36g..............1.87
BLC2......39.1g............1.40"
2520......39...............1.55"
4831......47g..............1.30"
414.......42...............1.57
4064......37g..............1.0"


173g

4350......38...............1.99"
3031......35g..............1.85
4064......39g..............0.88"
BLC2......40g..............1.65"
414.......43g..............1.10"


FURTHER TESTING
All rounds fired from an Accurite Rest, all groups consist of two five rd groups.
Brass, Norma, Projectile- 165g Remington SPLSC & 173g fmjbt, "pulled". Primers, CCI-LR. Brass TTL & champfered inside/outside.


165g

4831SC........45g........1.65"
IMR3031.......35g........1.30"
IMR3031.......36g......... .70"


173g fmjbt

4831SC........48g......... .88"
IMR3031.......34g......... .90" in a perfect vertical string.
IMR3031.......35g......... .44" & 1 flyer .82" out
(second group 3031)....... .71 & 1 flyer .75" out

Thanks BEJ I already had Pierres' info though.

I'm using 150 grain Hornady SPs with 45 grains of IMR 4064. The K-31 has a very short throat. I am using an OAL of 2.875" per the Hornady reloading manual. I got a 5 shot 2" group at 100 yds with the iron sights with this load.

Are you aware that there are at least three excellent sites devoted to Swiss military rifles?