Chamfering, is it necessary?

[Franklin SR]

I purchased 500 boattail round, I noticed the bullet (Hornady FMJ BT) fits on the case without Chamfering.

Is this step still necessary?

Thanks in advance.

"They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety"- Benjamin Franklin

[RH45]

nope

[R-Bros_JLR]

Necessary? Probably not, but I do it anyways.

[gohuskers]

Not necessary in my opinion but to each his own...

[Powder Finger]

Go ahead and seat some bullets, then look to see if any copper shaving is present. If it is decide if you think it's good for the bullet.

[kamikaze1a]

With BT bullets, the only time I chamfer is after trimming the case...but with flat base, it depends on the brass and bullet. A trial seating will tell you if you need to chamfer after each sizing.

[Poppa Bear]

Only when I trim cases.

[anachronism]

I feel it's important to prevent shaving the sides of the bullet during seating, even with boat tails. It's not a big deal, you could chamfer a hundred cases in a couple of minutes. My trimmer does it for me automatically now, inside & out. I've never met a piece of once-fired 223 brass that didn't need trimming anyway.

[dauntedfuture]

Only when you trim. If you are shaving bullets and they still shoot I would not worry too much; you could run into a risk where you shave a big chunk off if things are extreme and the round would not chamber.