300 Blackout Brass Cutting Jig

[funkymonkey1111]

Thinking about getting into the .300 Blackout.

I've seen a number of different cutting jigs made to go on the Harbor Freight 2" cutoff saw. If you are using this system, what jig are you using and/or do you recommend it?

Is there another brass cutting process that works better?

[Mountain_Goat_Actual]

Much better cleaner cutting processee. I use a dillon xl750 press and have a dedicated short toolhead for case prep using a dillon rt1500 trimmer and a dillon sizing/trim die along with a redding universal decappin die, and a swage it s750 swaging adapter to swage the primer pockets on crimped brass. So i decap, swage and trim 223 brass to 300 blk cases. I then wet tumble to knock off the outside burr from trimming which isnt much at all, then switch out the toolhead to my loading toolhead and since the cases are already resized i run a lyman mandrel die in station 1 to resize the neck and knock off any remaining burr on the inside of case mouth. With my case prep toolhead all setup as i described, i get 95% of the case prep done in one handle pull. I can trim 223 brass to 300blk at about 800 an hour no problem at all, and I am only going at about 80% capacity. This setup can be used on most progressive presses(minus the swaging capability, which is a huge capability imo)

[Great-Kazoo]

Thinking about getting into the .300 Blackout.

I've seen a number of different cutting jigs made to go on the Harbor Freight 2" cutoff saw. If you are using this system, what jig are you using and/or do you recommend it?

Is there another brass cutting process that works better?

The best way is to run the 1500 dillon trimmer with 300 die, etc. My swager is the Lee APP press. Great bang for the buck. As in $130 delivered with swaging dies, etc. It's a tad more than the dillon swaging tool. But much easier ( for me) to use. As for the swage it. Some have good luck with it, others. It's a 50/50 crap shoot.


IF you want the tool for cutting brass on the saw. message me. I "think" i know where the 3d printed one i have is. Hopefully, it's right next to the lower receiver i am looking for ;)

[funkymonkey1111]

i didn't realize the RT1500 would cut that much--instead of a slice, it's just grinding down the case nearly 10mm?

[DFBrews]

I bought hoser made blackout after realizing what my time was worth

[20X11]

I bought hoser made blackout after realizing what my time was worth

+1 for this

[whitewalrus]

i didn't realize the RT1500 would cut that much--instead of a slice, it's just grinding down the case nearly 10mm?

Dillon beefed up the trimmer when they came out with it to allow the removal of large lengths of brass. The older RT1200 is not recommended for the task, though there are people using them.


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[Hoser]

I tried one of the cutoff jugs and the HF saw. Huge pain in the ass and the quality of brass was not any better. It did nothing other than triple the time involved.

I went back to my Dillon 1050/1100 with a RT1500.

When people ask I run the completed brass through my AMP annealer.

[funkymonkey1111]

I tried one of the cutoff jugs and the HF saw. Huge pain in the ass and the quality of brass was not any better. It did nothing other than triple the time involved.

I went back to my Dillon 1050/1100 with a RT1500.

When people ask I run the completed brass through my AMP annealer.

Does the rt1500 trim die form the .300 blackout case while it's trimming?

[Hoser]

Does the rt1500 trim die form the .300 blackout case while it's trimming?

Yes. The initial shoulder is pretty round, but still something to headspace off. After fireforming, the little shoulder is much more pronounced.

[Madusa]

Just curious, I have a swagger for a Dillon 550 I use. The 750 is similar right? Are you concerned about damage to the press? I’m kind of weak on the swage leverage because of this and the swage isn’t great.

I use a belt sander to ruff cut then trim with little crow