Chamfering Necessary Loading Boatail Bullets?

[Saw-Bones]

Are there downsides to loading a boat-tail bullet into a case that doesn't have a chamfer to the inside of the case mouth?

It appears to be a waste of time since the bullet's base diameter is considerably smaller than the case mouth and there is a significant taper that should allow easy expansion of the case mouth without buckling the case.

Your thoughts?

 

[Sofie007]

Not necessary to chamfer ID, but best to debur or break the sharp corner to eliminate an initiation point for cracking.

 

[Scooter22]

I give them a quick twist I/O.

 

[Blue68f100]

Yes you should chamfer the inside to clean the edge. Otherwise it will scrap the jacket as you seat the bullet.

 

[Walkalong]

Knock the edge off anyway, especially if you trim it.

 

[RealGun]

Not necessary to chamfer ID, but best to debur or break the sharp corner to eliminate an initiation point for cracking.

I know that ID deburring as chamfering. There is never a need to put a full knife edge on the case mouth.

 

[FROGO207]

IMO if you do not do it there is a chance of scratching the bullet and rendering it somewhat inaccurate. I chamfer each time and do not worry about the loss of accuracy.YMMV

 

[Ironicaintit]

Nothing wrong with having lightly beveled edges. I do it as standard case prep, regardless of which bullet I'm using.

 

[rg1]

The best tool for deburring the inside of case mouths is definitely the VLD chamfering tool. Prevents shaving copper from bullets and important for match bullets. The VLD has a higher degree of taper than a standard deburr tool. Only a light couple turns removes burrs and tapers sharp edges. Even though a boattail is easier to seat than a flat base it still needs a clean inside case mouth to prevent scraping copper from bullets.
https://www.midwayusa.com/product/1012871154/lyman-chamfer-tool-vld-very-low-drag

 

[hdwhit]

Saw-Bones asked:
Are there downsides to loading a boat-tail bullet into a case that doesn't have a chamfer to the inside of the case mouth?

Yes, if you have trimmed the case, there will be small brass shavings adhering to both the outside and inside margins of the trimmed case mouth. If you don't remove them by chamfering the outside margin and deburring the inside margin, they have the potential to act like little grains of sand getting into placed you would rather not have them.

 

[lightman]

I lightly bevel my cases, even with boat tail bullets.

 

[RealGun]

Yes, if you have trimmed the case, there will be small brass shavings adhering to both the outside and inside margins of the trimmed case mouth. If you don't remove them by chamfering the outside margin and deburring the inside margin, they have the potential to act like little grains of sand getting into placed you would rather not have them.

I think your "deburr" and "chamfer" are reversed here. The tapered edge on the inside diameter against the bullet is what I know as "chamfer".

 

[Bartojc]

I always give inside and outside a quick run with the tool after a trim. Even if I do not trim I do it. Part of my process.

-Jeff

 

[Walkalong]

I think your "deburr" and "chamfer" are reversed here. The tapered edge on the inside diameter against the bullet is what I know as "chamfer".

I don't know which is right, but I usually think of it the way hdwhit does. Dunno. We would always "deburr" the inside of a copper pipe joint after cutting to length. ??

 

[RealGun]

I don't know which is right, but I usually think of it the way hdwhit does. Dunno. We would always "deburr" the inside of a copper pipe joint after cutting to length. ??

I guess it depends upon which surface gets a taper (chamfer).

 

[TheDomFather]

Yes chamfer and debur every single time, Its quick and painless, If you dont you will likely scrape part of the jacket and notice small copper shavings.

 

[Varminterror]

Been said, but I'll support, break the inner edge. A guy might not need a full depth chamfer like which may be necessary for flat base bullets, but a guy definitely needs to knock the edge off, and any burrs or flaring resulting from the trim.

 

[Nature Boy]

If accuracy is important, always chamfer and deburr after trimming

 

[Saw-Bones]

17 to 0 for chamfering and the winner is.... chamfering!

Thanks to all for your input, so I will be chamfering with my vld tool..... Doc

 

[FROGO207]

I do it every time I inspect the finished brass as a last step just because it is easier than looking specially to see if I have a previously done brass or it is new to me range brass. After a while I think that you will find it becomes one of those automatic steps that needs doing for max accuracy. I want to give every bullet it's best chance of success.

 

[RealGun]

I do it every time I inspect the finished brass as a last step just because it is easier than looking specially to see if I have a previously done brass or it is new to me range brass. After a while I think that you will find it becomes one of those automatic steps that needs doing for max accuracy. I want to give every bullet it's best chance of success.

Hmm...Any range brass I find gets segregated from my regular supply. It undergoes a sort of assimilation process.

 

[z7]

On all my rifle brass I give it a quick touch with the VLD Chamfer tool in a cordless drill, I can tell the difference when seating bullets between brass, the force required is more variable, or at least it feels that way when I don’t chamfer