Prep NEW cases?

[roysclockgun]

Ever since I, years ago, learned to prep new cases, I have never stopped doing that!
How many believe that doing so makes any difference, in terms of accuracy?
First I check OAL (yes, on new cases) to make certain that OAL is uniform. Then I use my hand tool to true up the flash hole, inside the case.
I then chuck up the tool to bevel the inside of the case mouth.
Finally, I chuck up the tool to bevel the outside of the case mouth.
I do the same with fired cases that I acquire from others.
Am I wasting my time taking these steps?
Steve Ashe

 

[wildgene]

...pretty much depends on brand...

...Nosler & Norma I just load, it's "finished" brass out of the box...

...Winchester & Remington on the other hand require all the steps you mentioned. Remington cases seem to have a very pronounced burr from the punched flash hole...

 

[JD338]

Accuracy is all about consistancy so I always prep new cases.
The exception for me has been Nosler brass, its ready to go.

JD338

 

[Guest]

I generally prep new cases as a rule. Even Norma/Weatherby cases can use a good chamfering of the case mouth and a check of the flash hole (though drilled flash holes are far less likely than punched to have issues). I don't generally worry much over length on new cases, as I want them fired and sized once before I trim them all to uniform length.

I've not had the opportunity to work with Nosler's brass, which comes prepped, yet. That's just about the only brass I can think of that I wouldn't at least want to chamfer and debur before loading.

 

[PJGunner]

I was given 1,100 rounds of Federal Gold Medal match brass by an LEO friend of mine as he knew I shot a lot of .308 Win. Just for spits and grins I reamed out the flash holes and uniformed the primer pockets and they were the the worst brass I even had to fool around with. This was once fired match brass and the primer pockets were already loose. Just to make sure it wasn't me, I actually bought a box of that ammo, shot it and sure enough it was just as bad and the primer pockets were loose just like the brass my friend gave me. The factory load was quite accurate though but the brass is almost trash IMHO.
Paul B.

 

[DrMike]

Steven,

I prep new brass. The exception would be Nosler brass, and Norma and Lapua require less attention. Still, I examine the brass the check random samples.

 

[rick smith]

Depends on the purpose of the loaded rounds and who will be shooting them. For a friends AR that will be used to shoot cans, pine cones and various objects, load and let him blast away. For my competition shooting friends, neck size, debur/chamfer, check flash holes and primer pockets, then load a few, check for concentricity and shoot some groups. I long ago gave up fully prepping all cases before loading.Rick.

 

[onesonek]

Like other's, depends on brand, and then intended use. I too have seen primer pocket issue's with once fired Fed. GM brass.

 

[Kodiak]

I do all cases the same, when new. Even quality cases. It pays to pay attention to detail.

Jim

 

[Antelope_Sniper]

PJ, of course that was the worst brass ever.

It was FEDERAL.

 

[Charlie-NY]

Lapua & Norma brass - I just load and shoot

Everything else -

uniform flash hole
uniform primer pocket
run through sizer die to round necks
chamfer & debur

after first firing-

clean necks & pockets
trim all brass to minimum length
neck turn if desirable
chamfer & debur

 

[velvetant]

Neck size new cases, deburr primer flash hole and chamfer case mouth inside and out.
load and shoot.
I trim cases after first firing.

 

[big rifle man]

charlie-ny, I'm on the same page as you. I like to keep everything the same when initially Prepping the brass and also after every shot.

 

[SJB358]

Neck size new cases, deburr primer flash hole and chamfer case mouth inside and out.
load and shoot.
I trim cases after first firing.

Same as Randy. Only difference was Nosler, just load and shoot. The do come very nicely prepped.