[ARCHIVED THREAD] - Case Chamfer tool

Posted: 8/3/2015 6:56:58 PM EDT

After trimming bottleneck cartridges, I have had much better results pressing the bullets in after the sharp edge is removed. Even if loading boat tail bullets, there will be a burr or scrape as the bullet goes in. Slightly chamfer the throat and seating force is much more consistent and the scoring of the bullet goes away. The cutter is a 20 degree tapered end mill that just touches the throat.

Chanfering quantities of 223's and 308 brass results in my cramped and sore thumb and hand. Here is my solution. Inspired by the Honeybadger case trimmer, the purpose is to chamfer, not to trim.

Setup is fussy to get the concintricity perfect.

So far, I'm pleased with the results and no fatigue in the hands! For me, mission accomplished.

Posted: 8/3/2015 8:42:18 PM EDT

[#1]

Nice!

Posted: 8/4/2015 10:40:49 AM EDT

[#2]

Drawings of the adapter available

Posted: 8/18/2015 8:11:49 PM EDT

[#3]

Link to video

Posted: 8/18/2015 9:03:40 PM EDT

[#4]

Nice but IMHO a little overkill.

Vince

Posted: 8/18/2015 10:51:36 PM EDT

[#5]

I only have one thumb left. I have to take care of it. I have has several cramps chamferring brass. If you have done very many you would know what I mean.

Posted: 8/19/2015 12:44:18 PM EDT

[#6]

Quote History

Quoted:
I only have one thumb left. I have to take care of it. I have has several cramps chamferring brass. If you have done very many you would know what I mean.

View Quote

I completely understand but I do not chamfer or de-burr. After de-priming and trimming I clean my brass by wet tumbling which imparts a nice finish to the case mouth that does not need to be chamfered or de-burred.

Vince

[ARCHIVED THREAD] - Case Chamfer tool

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[ARCHIVED THREAD] - Case Chamfer tool

[ARCHIVED THREAD] - Case Chamfer tool