Making 308 win from never fired 308 blanks

[kywoodwrkr]

Maybe of interest:
http://www.pt103.gdinc.com/manuals/A..._1961_June.pdf
1961 but has technical data.
http://www.dtic.mil/dtic/tr/fulltext/u2/a094136.pdf
For some of those annealing questions.
And-(automatic download PDF) Primer pocket hardness information
www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA497469

[Negster]

3rd firing yesterday and everything looks fine.
They went over the chrony at 2570 and 2628FPS
Ill neck size them again and take them with me on my next range trip.

Chris

[Negster]

4th firing today and still looking good. No split necks or head separation.
Reload and do it again.

[Negster]

5th fire went well off to do it again.

Chris

[Sanchez]

Not bad. Only 5 weeks from conversion to 5x fired .........
Sure wish that I could find some consistent trigger time such as this.

[Negster]

6th firing was last night.
I forgot to check for head separation but primer pockets still feel great and no splits.
Im not sure I would call this quality trigger time it usually goes like this

Sneak out of the house
Wife catches me
Go anyways
step out of the car
fire both pieces of brass im testing
Drive home
Sit in dog house

[deltaenterprizes]

I made one thicker neck 308 brass by necking down a 30'06 case, increases neck thickness by .003"

[toallmy]

Trigger time , is trigger time get it when you can .

[Sanchez]

Same here.
Have found that R-P & Fed are the thickest-walled domestic brass (also very soft), Olin & Hornady are thinnest/hardest.
Converting to .308/7.62 NATO is relatively simple, as most of the shoulder is wiped-out in the process.
Converting to 8x57mm normally leaves a slight ring bulge or step right in the (new) neck area, & I've even been able to measure it at times. Looks like all hell, but hasn't caused me too much grief over the years.

I made one thicker neck 308 brass by necking down a 30'06 case, increases neck thickness by .003"

[Negster]

7th was last night and already primed and ready to go again. No signs of failure. They went across the Chronograph at 2501 and 2526. Im not sure if im pushing then very hard but thats a 168gr bullet with 4064. I may try a little hotter and see how they hold up.

Chris

[Negster]

8th time today with 45gr of 4064 and a 168gr bullet. Recoil seemed to be more then usual but the cases held up and are already loaded and ready to go again.

Chris

[Negster]

fired 9 times

[azrednek]

The brass used to make the 7.62 blanks comes from the same brass strips as for the standard 7.62 ball. Its made on the same machines. All this talk of inferior brass is rumor and bunk. .

I tend to agree. I can't speak with first hand knowledge with 762 blanks. Back in the 70's when most brass was only available by buying loaded factory ammo. I re-formed hundreds of 30/06 blanks into 7X57, 765 Argie, 7.7 Jap and 8X57. I did have some split necks but after learning how to anneal shoulders in once fired brass in one of Barnes Cartridges of the World. Split necks were rare.