Neck turning

Sell the 308 and buy 7-08? :p

Seriously, if you don't want to throw down too much cash on it, look at a Forster handheld outside (HOT) neck turner.
 
xgunner said:
I am resizing 308 cases for 7mm08. The necks are too thick so I need to turn them down. What would you recommend?
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Measure the fired neck of a 7mm08 case and then make a dummy case with a formed .308 case with a seated bullet and measure the neck diameter. With many factory rifles with larger SAAMI chambers you can sometimes get away without neck turning. The biggest problem after case forming will be neck thickness variations and uneven case necks.

Bottom line I have formed military 7.62 cases to .243 and it is far less effort to buy new brass. Neck turning tools are not cheap and when forming cases if done in multipliable sizing steps you might have more uniform case necks. I sized 10 Lake City 7.62 cases with a .243 die and neck turned them and stopped and bought new .243 cases. Here in the U.S most 7.62 ammo is fired in machine guns so top quality cases with uniform case wall thickness are not a high priority in manufacture.

On the flip side if you decide to neck turn the 7.62 cases it will be good practice and a learning experience. And remember they make case forming dies as a intermediate step that help keep the case necks more uniform. Its your time and money "BUT" sometimes being a cheap bastard doesn't pay or worth the effort.
 
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I have the k and m one. It came with the expander, power attachment, hand attachment, cutter, pilot and shell holder. I think it was around $200. I wouldn't go without the power attachment and you'll need some good lube. You can do 100 pieces pretty quick.
 
Are you sure it needs turning? Are you using military or commercial brass?

I use Winchester 308 to make my 7-08 and neck is just fine.

Maybe all you have to do is use thinner 308 brass.
 
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There's thought here to do the same thing based on a few considerations. For myself, take either one of these away and I wouldn't entertain the idea.

- on hand is a reasonable quantity of cases to turn
- imperial 308 ( I consider these tough and durable. From experience, if the brass isn't durable the effort is a waste of a persons time.)
- already neck turning on this end, and repeat after 4 firings.

The price and availability of 7mm-08 cartridges is better than a few years ago. Mystic Precision and X reload are the places I would inquire or view online for inventory. IMO the cost of a neck turning system a person can get a bag of head stamped stuff to use.

FWIW I also use the K and M system and it works for me.

Regards
Ronr
 
Why not? said:
This won't help much, but most of my 7mm-08 brass is reformed 308. Have you checked the length of the fireformed brass? Necking down lengthens cases.

Ted
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Just going by memory here, as I haven't done any recent up/down sizing...so I might be backwards.
I recall my 308->243 and 3006->270 left the cases quite short for the new formed cartridge, well under trim length.
I had some 7-08 brass I resized to 308 (sold the 7-08) and those ones were long and required trimming.
So sizing down actually shortens cases, while sizing up lengthens them? Reason I'm assuming is more shoulder with the smaller neck, definitely seems contrary to ones thinking.
 
Ganderite said:
Are you sure it needs turning? Are you using military or commercial brass?

I use Winchester 308 to make my 7-08 and neck is just fine.

Maybe all you have to do is use thinner 308 brass.
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This but I have used everything from milsurp brass to at least four commercial 308 offerings to neck down to 7mm for at least a half dozen different rifles. Two of which were my own.

I have never had a rifle with a standard commercial chamber that wouldn't chamber these rounds. Are you speculating or have you actually had some issues???

One fellow came to me with three boxes he had sized ONLY the NECKS on. He should have full length resized the whole case as well and bumped back the shoulder a bit.
 
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