No trim - no chamfer?

[Grizzlypeg]

I'm reloading 223 Federal brass. After sizing it is under the specified trim length. Since I don't need to trim it, do I need to chamfer? I am looking for the highest possible precision.

 

[EvilDezel]

I do, Just a couple of turns.

 

[boltonscouter]

If you're using a baot tail bullet you can probably get away without it. If you're using a flat base bullet you may find it helpful.

 

[H4831]

Try loading the bullets you have without chamforing it. Should work.
Also, sounds like new brass you have, why did you size it?
In a hundred years or so of making ammunition, don't you think Federal can make it the proper size?
To put it another way, do you think the dies you happen to be using, are better than the commercial die set up that Federal use?

 

[Grizzlypeg]

No, its actually not new brass. It's once-fired Federal 223 brass. After passing through the full length sizing die, it still comes up under trim length. I'll check each and every piece though for length. Once I get these 350 pieces resized, I have to swage the primer pockets. It's got crimped primer pockets. Lots of work, but I have about 1000 identical pieces of brass to work with. It was previously fired through AR-15, and that's what I'm loading it for as well. 69gr sierra match king bullets. So yes, boat tail.

 

[Kryogen]

if you dont trim dont chamfer...... chamfer when you trim....

you dont shave when you have no beard...

 

[Toolman]

No need for a chamfer if you have not created a sharp corner.

 

[maynard]

The problem is without a chamfer you do have a sharp edge. This may cause you to shave the bullet when seating flat base or a boat tail bullet. For the couple seconds it takes just do it.

 

[Boomer686]

I don't think there is a need. If it 1F brass then it has the same edge as the OEM loading. No need to chamfer unless you trim or use square base boolits.

 

[JHM]

I found the same situation with the last few batches of Federal .223 that I have gone through, about 10% had to be trimmed. I had no discernable edge that needed to be chamfered, and no issues with seating the boat tail rounds. We'll see if it grows enough the 2'nd time around to need trimming.

 

[Grizzlypeg]

I'm about 1/3 of the way through swaging the primer pockets, the most labourous part of the job. I have time to think. I could always do a batch of 10 or 20 and see if they meet with my accuracy desires.