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What tools do I need to use 308 brass in my 260 rem?

 
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Old 04-09-2009, 10:43 AM
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What tools do I need to use 308 brass in my 260 rem?

Hay guys I need some advice I have a 260rem on the way and about 2000 pecies of 308 brass.

I dont see the need to buy 260rem brass when I have so much 308. Do I need to get a neck turning tool or will I be ok just running them through the 260 dies and triming them to length?

Jon
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Old 04-09-2009, 12:04 PM
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Re: What tools do I need to use 308 brass in my 260 rem?

"What tools do I need to use 308 brass in my 260 rem?"

A .260 FL die to run it into and a good case lube.

I prefer one of the wax lubes such as Imperial or Unique but lubes from Lyman, RCBS, and Lee work well too.

It HELPS to use an inrtemediate die such as a 7-08 in your case but it can be done in a single step without loosing a lot of them. If I were planning to make a lot of 308 into 260 and had no 7-08 available I'd get a set of Lee RGB 7-08 dies just for that purpose.

Load a dummy round with one of your newly formed cases, mike the neck so see that it isn't too thick. That's not likely but it can happen. Checking length is always in order.

If it needs turning, that's not hard either. I bellive the Forser HOT-100 (Handheld tool with a carbide cutter and a micrometer adjustment) is as good as they get and it's not very expensive either. Mine came from Midway at about $45, IIRC. But, again, I doubt you will need that step.

You will need to anneal the down sized necks to prevent premature splits. Don't over heat them, the commonly used RED HOT necks are FAR too hot!
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Old 04-09-2009, 08:32 PM
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Re: What tools do I need to use 308 brass in my 260 rem?

Hi i have necked donw thousands of 308 cases to 243 and just used an old RCBS full length sizinf die if you lube the necks their should be no cases damaged.

Just lube them up and neck them down then load and shoot.

Some of the cases were military berdan cases shot through L2A2 Slr's M14's M1A's Valmets and bolt rifles the case heads had marks from the bolts of all of the rifles then i loaded them another 5 times in243 and did not anneal any or loose any. It would be fun to drop one of those cases in front of a police ferensic so called expert their heads would be spinning all have a destinctive mark left on the case then to be in 243 that would realy have them scratching their heads as the cases were Australian Military from the early 1970's.

Cheers Bill
Australia
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Old 04-09-2009, 10:21 PM
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Re: What tools do I need to use 308 brass in my 260 rem?

Boomtube is right, a intermediate die like a 7mm-08 would help, but I think just running them trough a .260 Rem die would work. I actually use .308 Lake city Match brass for making my .243 Ackley improved brass. Neck turning is a must for that rifle. I'd look at turning your necks if needed. If not. even better.

Dan
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Old 04-10-2009, 03:14 PM
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Re: What tools do I need to use 308 brass in my 260 rem?

This is LC 308 match once fired I lubed them up and ran them through my redding dies. I think It looks fine. I dont know how to tell If I have thick necks?


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Old 04-10-2009, 04:59 PM
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Re: What tools do I need to use 308 brass in my 260 rem?

"I dont know how to tell If I have thick necks?"

The "new" cases look fine.

Few of us have a tubing micrometer so, to check for too thick, seat a bullet in a couple and read the neck thickness with a micrometer or dial caliper. If they are .297" or less you are ok. But prove it by "painting" the necks with a felt tip marker, chamber the dummies and extract them, then check to see of the marker is rubbed off completely around the neck. Anything less than a complete circule rub is okay to shoot, otherwise turn the necks until they are less than .297" in loaded diameter.

Don't worry about a snug or "lumpy" looking shoulders, that will correct on the first firing! Use normal loads to fire form your .260 brass.

Last edited by boomtube; 04-10-2009 at 05:22 PM.
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Old 04-10-2009, 06:38 PM
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Re: What tools do I need to use 308 brass in my 260 rem?

I seated some 140g Berger VLDs and took the readings .294, .295, .296. I wont have the first rifle for at least a month so I cant to the test with the marker but I will write it down thank you guys.
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