7.5 Swiss

[Brewster]

Okay, I'll need dies but what is the best set-up for this, dies, powder, bullets etc...

God dam milsurpitis...

Information

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[Doug]

Hey Bruce!

You might try to contact 762nato on Gun Nutz. Andy has loaded some of this, and his one group that I watched him shoot (five rounds rapid fire at a hundred yards, iron sights) was as good as I can do with a scoped modern rifle. Of course, that is not saying much.... but it was solidly 1.5"........

Doug

[tiriaq]

I've been using Lee dies - have FL, collet, seating. .284 brass FL sized. Nosler 150 Ballistic Tips which were on hand, Fed. GM primers, and a moderate charge of 4895 out of the manual. Going to try some 178 Amax later on. Cases form very easily. Accurate.

[sdh1911]

I can pull 2" groups with my 7.5 off the hard rest with little effort, thing just plain shoots straight-SDH

[Fremen]

I've been using Lee dies - have FL, collet, seating. .284 brass FL sized. Nosler 150 Ballistic Tips which were on hand, Fed. GM primers, and a moderate charge of 4895 out of the manual. Going to try some 178 Amax later on. Cases form very easily. Accurate.

How do I go about changing the 284 brass to 7.5 brass?

[K31]

Just run it into the 7.5 die, and trim to the proper length. But why even bother, when Trade-ex has Privi Partizan 7.5 Swiss brass for less than you would pay for .284?

[diopter]

I've been using Lee dies - have FL, collet, seating. .284 brass FL sized. Nosler 150 Ballistic Tips which were on hand, Fed. GM primers, and a moderate charge of 4895 out of the manual. Going to try some 178 Amax later on. Cases form very easily. Accurate.

Tiriag:
You'll like the 178gr Amax.


100 yds is pretty close, so bullet choice is not too critical at that range. The further out you go, the better a bullet you'll need.

I've settled on 178gr Amax and 44gr Varget, until I get more opportunity to test other powders and bullets. I have F/L dies from Lee, RCBS and Hornady's New Dimension in 7.5x55. I prefer the Hornady, but the others are usable too. The Privi brass does have to be trimmed too.
Use good lube. I had stuck Privi brass in the RCBS sizer when I tried Hornady's One Shot pump bottle Lube. With the Lee dies, the de-capping pin could be used to drive out the case, whereas I had to remove the RCBS dies, drill and tap the case(1/4-20). Save yourself the trouble and use good lube to start. I'm using castor oil now.

[sillymike]

Aren't the Lee dies cut for the K11 rifle, while the Hornady/RCBS cut to the K31 standard?

Most loads for the 308 should work well in the K31...

[diopter]

All of them will work fine with the K31, but those dies marked for the K31 might be too wide to chamber properly for the M96/11, M1911 and K11.

All my sets of 7.5 dies are for the M1911 dimensions. Think of it as if you are reloading for an autoloader and need those cases F/L reszsed for reliable chambering and firing. With the tight throat on the K31, neck sizing is not needed and can cause chambering problems if just ever so slightly off.

These dies bring your brass back to original, unfired specs for GP11.

[NuJudge]

It would help to know which of the Swiss rifles you were going to shoot the ammo in. The K31 tends to blow the case out to the sides a lot, but they typically have very tight headspace and the rifling starts just ahead of the case neck.

The last of these considerations means that you have to have a bullet that starts to taper just ahead of the cannelure, or where a cannelure would be. If it does not taper quickly, you will be jamming the bullet into the rifling, giving you chambering problems and perhaps pressure spikes.

I like the Remington bulk softpoint 165gr. In my K31 rifles and my 1911 Carbine, it has shot better than Sierra 168 Match Kings. I had trouble with several Hornady designs.

I like powders that are in the 4350 to 4831 speed range. A lot of other people like 4064 speed powders.

I'm shooting Swiss brass with Russian-made PMC primers. They seem to be mild, but the flame jets are very long, visible at the muzzle.

Christopher Dingell