Sizing cast from .379 to .358?

ton45-II

ton45-II

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Has anyone tried this? I wanted to take a 250 grain .375 cast and size it down to .358. I read that the jacketed 9.3 mm are sized down to .358. I am assuming the doing this with a softer material such as lead and as long as the BH is around 10-12 it should be fine?

tön
 
ton45-II said:
Has anyone tried this? I wanted to take a 250 grain .375 cast and size it down to .358. I read that the jacketed 9.3 mm are sized down to .358. I am assuming the doing this with a softer material such as lead and as long as the BH is around 10-12 it should be fine?

tön
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possible maybe I think you would end up smooshing the lube grooves and excess will be hanging off the bottom if you are using a push through sizer and you will probably have poor fillout with a lube sizer.
 
You will wipe out or destroy the lube grooves and they will be reduced unevenly, throwing the weight of the bullet off centre, your results will not be good. Jacketed bullets can be sized down with less damage if you have a powerful enough press.
 
looks like mihec molds in solvenia has a heavy 359 cal that will be suitable. He is a custom shop which makes excellent molds, I have bought from him in the past and the molds are excellent.
 
Too many thou to take down. If you do show pics of before and after Press.
I would buy a mold for a 250 grain 358 dia bullet. Cheaper than replacing a press.
 
It's do-able. You'd need to swage down in at least 2 steps, and 3 would be better. But you lose concentricity when you swage down that much and those bullets won't shoot well at all.
 
sunray said:
Shaves off the outside of what? A sizing die isn't the same thing as a swaging die.
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ignore the word resizing die and insert the word shaving die .

a swagging die compresses the outside of the bullet .......

what if the die had one , or even several cutting edges that cut off the outside of the bullet down as it was pressed through the die .
 
ton45-II said:
Has anyone tried this? I wanted to take a 250 grain .375 cast and size it down to .358. I read that the jacketed 9.3 mm are sized down to .358. I am assuming the doing this with a softer material such as lead and as long as the BH is around 10-12 it should be fine?

tön
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10 thou is about the limit to size down a cast bullet. You lose a lot of lube capacity, and you also change the bullet's profile and you find that you have to seating it quite deep. It has already been mentionned that it will tend to come out "lop-sided" and there are burrs left from the sizing. A non-started in most cases if you go beyond about 10 thou.

JBD said:
looks like mihec molds in solvenia has a heavy 359 cal that will be suitable. He is a custom shop which makes excellent molds, I have bought from him in the past and the molds are excellent.
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I have a few of his molds, but didn't see anything in 358 that is "heavy".

You might want to look at the Lyman 358009 (285 grs) or some other obsolete mold, or just buy what you want from Ben Hunchak.
 
Saeco makes a very nice 245gr. flat pt. Gas Check bullet, which is accurate and deadly in my .356 Win... Google Redding Reloading, then Saeco for pictures. Saeco molds are a little bit costly, but this is pretty important sh%t.
 
That's a lot to take off... I have gone from .314 to .309 in the past and it was a workout with a Lee Classic Cast press and lee push through sizer. I agree with the others that say to look for a mould more suited to the bullet size you want.
 
I once had a 35 winchester self loading rifle and I did not want to buy a special mold for it so I sized a 200 grain 358 bullet down to 350. The bullet was damaged quite a bit and did not shoot well but it went out the end of barrel ok. Buy the correct mould they are very easy to find if you look and then it will work the way it is supposed to.

Graydog
 
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