resize or load new primed .357 cases?

unstableryan

unstableryan

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I have 1000 never fired Winchester factory primed .357 magnum cases.

I received my bullets last night and I want to reload for picking up my gun on saturday.

Do I remove the depriming pin and go about the whole process, sizing and loading or just load them? I find arguments for both sides online.

If I had the gun already I would just see how they fit...

Thanks,


Ryan
 
i've had new brass that didn't have the neck sized small enough to securly hold the bullet- if it was me, unless they're arleady primed, i'd just run them like any reload-
 
All new brass requires sizing, checking for length and trimming as required.
Winchester, nor any other manufacturer, sells new brass that is already primed. If your brass is primed, somebody else did it. However, take out the decapping pin, size 'em and load 'em.
 
sunray said:
All new brass requires sizing, checking for length and trimming as required.
Winchester, nor any other manufacturer, sells new brass that is already primed. If your brass is primed, somebody else did it. However, take out the decapping pin, size 'em and load 'em.
Click to expand...
Au Contaire.....Dillon sells brand new, factory primed Remington brass in .223, 45 acp, 9mm, 45 colt, and several others....The brass also has been resized at the factory....Factory primed/resized Winchester used to be available as well, but, at this time, Dillon can`t get anymore....Page 44 of Dillon`s "Blue Press" catalog......
 
This is probably 10 years old, stored in the dark in a large plastic bag and they are all shiny and new.

The primers are all sealed with two dots of red lacquer and were purchased new this way.

I can't remember the exact numbers but they are within a couple thousanths of new factory loaded shells measured around the middle of the case where it would be sized.

I don't need to load for Saturday, I have 7 boxes of shells... I just am kinda antsy having all the parts and not doing it :) I'll do up a cylinder worth each way tonight and test them on the weekend I guess.

With a thousand brass I hope I can get away with just loading the first time.

Ryan
 
I'd just make sure that the bullet is a tight fit and won't move once seated, BEFORE CRIMPING, try to put your weight on a loaded round(bullet nose against top of bench), again, before crimping..if bullet doesn't shift, you're good to go, seat 'em and crimp 'em.....enjoy!
 
I used to load ammo for rifle teams, police forces and the military. Almost all the brass we used was Winchester primed brass. It came in boxes of 2500, primed by Winchester. I belive they have stopped making primed brass, but I still see some of it in the system.

All you have to do is flare , charge and seat.

BUT. If you want to do some load development, you should remove the decapping pin, size and then flare, so the neck tension of the virgin brass is more similar to what your re-loaded brass will be like.
 
When you crimp, do it as an operation separate from seating the bullet; the results will be more consistent. The Lee Factory Crimp Die, is one of the few Lee products that I really like. It makes a nice crimp and because it resizes the loaded round it ensures that your handloads will chamber without sticking in your revolver.
 
I've never understood what the point of "pre-primed cases" is supposed to be? If you've got the dies to load them, you are going to have to prime them eventually. Unless you can send them away so they are "factory re-primed."

Well, I couldn't make the last shoot. You know, all my brass was in the shop. Had to get all new primers put in.
 
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