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.358 Norma Mag Fire-forming loads
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one of us
posted
Can anyone give me a good load?

How about one with .357 bullets. They're the cheapest bullet I have for this.

Any suggestions are appreciated.

While on the subject are there "rules of thumb" for establishing fire-forming loads in general? How does one determine a safe light load for a given chambering without data? Or can you?

(BTW, I just read a thread that leads me to add that none of my six manuals lists fire-forming loads)

[This message has been edited by steve y (edited 12-19-2001).]

 
Posts: 612 | Location: Atlanta, GA USA | Registered: 19 June 2000Reply With Quote
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180 grain bullet with SR-4759 From 28.0 grains to 32.0 grains, Remington 9-1/2M Primer

250 grain bullet with SR-4759 From 28.0 grains to 32.0 grains

 
Posts: 3282 | Location: Saint Marie, Montana | Registered: 22 May 2002Reply With Quote
<Ken Howell>
posted
I fire-form .300 Winchester Magnum brass for my .358 Norma. Here's how.

-- DO NOT OMIT ANY STEP LISTED HERE.
-- DO NOT USE A RIFLE PRIMER OR POWDER.
-- NEVER USE A BULLET OF ANY KIND.
-- AS WITH ANY OTHER LOAD, START WITH A SHORT CHARGE AND INCREASE IT IN VERY SMALL INCREMENTS, ONLY WHEN NECESSARY.

1. Size full-length in .358 Norma sizer die with neck-expander button removed. (This just sets the shoulder back.)
2. Prime with Large Pistol primer.
3. Load about 12 to 15 grains of Bullseye (for starters -- you may have to increase this to form the case out completely).
4. Roll 1/4 square of toilet tissue between your palms and tamp it down lightly atop the powder charge.
5. Fill to mouth with inert filler (Cream o' Wheat, Instant Ralston, corn meal -- NEVER flour)
6. Seal mouth with smear of bullet lube, Vaseline, etc.
7. Lube case with sizing lube.
8. Chamber and fire.
9. Trim to length.

 
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<RussT>
posted
I think Graf still has loaded 358 for 26.95. If so buy a couple of boxes and save some time.

The A-square book has loads for pistol bullets listed.

 
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<cohoyo>
posted
I just neck up .338 win mag brass in my .358 dies and shoot them. if i'm out to lunch someone set me straight.
 
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