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Dillon 1200 Trimmer

Re: Dillon 1200 Trimmer

From several users the low down is that if you are using a bullet with even the slightest boattail then there is no need to chamfer and debur. Many have also said that as long as you use a sharp blade no problemo.
 
Re: Dillon 1200 Trimmer

I've used the Dillon 1200 for years. I still chamfer, but the outside deburr isn't necessary. Any burrs on the inside of the neck will score your bullet, not a good thing.
 
Re: Dillon 1200 Trimmer

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: smokshwn</div><div class="ubbcode-body">From several users the low down is that if you are using a bullet with even the slightest boattail then there is no need to chamfer and debur. Many have also said that as long as you use a sharp blade no problemo.

</div></div>

With all the violence that happens in such a short time after you pull that trigger until it leaves the barrel I would imagine there would be some logic to have as clean of a release as you can. Burrs, run out, consistent neck tension etc. It would seem reasonable to control as many of the variables that you can within reason unless you just want to throw the boolits......

Just sayin....
 
Re: Dillon 1200 Trimmer

The motor runs around 4,000 rpm from what I understand and that leads to the pretty clean cut. Mine gets hot, almost too hot to touch.

After trimming I just touch mine on my Giraud to clean it up.

They are great. Mine makes short work of turning a 223 into a 300 Whisper, and thats cutting a *LOT* of brass.

The trimmer die also acts as a full length size die.
 
Re: Dillon 1200 Trimmer

The sizing die settings will change as the trimmer heats up so if you are sizing a lot of cases you will have to re adjust the die as it heats up and then after it stabilizes, finish the batch of cases or better, preheat it before setting the sizing die.
Also, my Dillon sizer/trimmer dies were out of spec from the factory and when set to the shellholder would set back the shoulder to far creating a headspace problem. Set them with a gauge if possible.
 
Re: Dillon 1200 Trimmer

I use a lyman m die to slightly flair the inside of the case for 223 and this removes the tiny burr. For real serious stuff I debur the inside and outside.
 
Re: Dillon 1200 Trimmer

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Chiller</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: smokshwn</div><div class="ubbcode-body">From several users the low down is that if you are using a bullet with even the slightest boattail then there is no need to chamfer and debur. Many have also said that as long as you use a sharp blade no problemo.

</div></div>

With all the violence that happens in such a short time after you pull that trigger until it leaves the barrel I would imagine there would be some logic to have as clean of a release as you can. Burrs, run out, consistent neck tension etc. It would seem reasonable to control as many of the variables that you can within reason unless you just want to throw the boolits......

Just sayin.... </div></div>
Have you seen the cut provided by the Dillon 1200? Agreed there is not a chamfer like the Giraud produces however there also is not a burr.

If and when my shooting consists of pumping up the bladder ball to actuate the trigger of a gun that is resting in bags on top of a concrete bench, then deburring and chamfering may get "within reason". But IMO after trimming with the 1200 it is not necessary.

Just Sayin.....

For processing large volumes of brass, it is more efficient to be able to do that processing on a progressive press without touching every single piece of brass multiple times.

As an example if I were to resize my brass on my 650 and load on my 1050, I only grossly handle the brass twice. That is it gets dumped into the casefeeder on the 650 once to be sized and then trimmed and then dumped again into the casefeeder on the 1050 for loading.

If I were to load the same way with a Giraud I still grossly handle the brass for the two case feed dumpings but I add in one detailed handling of the brass where I have to handle and orient it correctly for trimming.

When I actually saw the quality of the cut provided by the Dillon 1200, it helped me make my decision to go that route over the Giraud. YMMV