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How to make 300 Blackout on 650


cworks
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Do you plan on buying .300 Blackout brass or making it from .223 cases? If making it you will need a method to cut the .223 cases down to .300 Blackout dimensions-trimmer or saw are the methods used. Then you can run it thru the dies you choose to use.

Edited by The_Vigilante
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Buy a Dillon Rapid Trim 1200 case trimmer and get yourself a dedicated toolhead and trim die from Brad's Warehouse...

Lubed 223 cases go in the case feeder, nice new 300BLK cases drop in the bin ^_^

Clean the lube off, and load as you would 223's, except for a couple of additional tweaks...

  • Replace the powder funnel with a Dillon p/n 13015 (for 7.62x39/300 Whisper), and,
  • Adjust the metal "clip" on the bottom of the case feeder, at the opening over the drop funnel/tube, to make the opening smaller and ensure the cases drop base-first into the tube

Beyond that, it's no different than loading 223. My setup uses a neck-sizer in station 1 (or you can F/L resize, again) - the Dillon 1200 seems to undersize necks a bit and running an expander ball through them once again not only makes seating bullets (especially flat-base) easier, but tends to "roll out" any burr left behind by the trimmer (keeps from "shaving" your bullets).

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You're making your own .300 Blackout brass in A-stan....man, this sequestration thing has hit the .mil harder than I thought.

EDIT: you might want to change your location under your pic then.

Been here for a little while and I will be back in ANC soon. Guess I will wait to watch youtube when I get back home.

Edited by cworks
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If I was you, I'd order whatever dies, special toolheads, trimmers, powder, primers, etc. now while you are still overseas with the hopes of getting everything delivered to your house when you get back.

Looking at various reloading component supplier websites, even all the shotgun primers are all sold out. I've never seen anything like this panic before.

There might be brass trimming/forming info in this thread:

http://www.ar15.com/forums/t_6_42/385765_300_Blackout_Master_Thread.html

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This fellow made a fixture to hold the cases and cuts them with a cheap mini cutoff saw. http://castboolits.gunloads.com/showthread.php?167387-A-jig-I-made-to-cut-blackout-cases-quickly-and-easily&highlight=Brass+cutting+jig

The first photo is a link to a photobucket video, if you can't watch it, it takes him about 2 seconds a case to cut them down.

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If I was you, I'd order whatever dies, special toolheads, trimmers, powder, primers, etc. now while you are still overseas with the hopes of getting everything delivered to your house when you get back.

Looking at various reloading component supplier websites, even all the shotgun primers are all sold out. I've never seen anything like this panic before.

There might be brass trimming/forming info in this thread:

http://www.ar15.com/...ter_Thread.html

Thats pretty much what I am trying to do. I know I will need dies but not sure which ones.

I have plenty of my own 5.56 brass so I plan to convert it to 300 BLK. My original post was intended to get opinions on how do that. This is kind of what I have come up with so far:

Trim with Harbor Freight mini chop saw using this jig http://www.300BlkTalk.com/forum/viewtopic.php?f=179&t=80801

Next I need to deprime, resize, and trim Not sure which dies to us but it seems the FL size/deprime die is what most are using. I have a Dillion trimmer so i guess i will buy this trim die and milled toolhead when they are back in stock. http://www.bradswarehouse.com/index.php?p=1_11_Trim-dies

Clean in my media tumbler and chamfer/debur as I see necessary

Then go into loading as usual. I thought using a neck sizer couldn't hurt anything, drop powder, seat, crimp if needed

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my link should not have been pack blocks....maybe i copied and pasted the wrong link here is the one i wanted http://www.300BlkTal...p?f=179&t=80842

But yes its the same one posted in #10

I see you (jmorris) posted in that thread did you buy one? If so how does it work?

Edited by cworks
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No, I went with the 458 socom a while back for my needs before the blk existed. The 300/221, 300 whisper, 300 blk wasn't the best fit for my use (subsonic hard hitting hunting round) but I know folks that have them, like to learn from folks and love homemade.

Edited by jmorris
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I use that setup and it's outstanding and so far trouble free. My procedure is to trim on the minisaw/with jig; decap with Lee universal decap die; tumble in SS media to remove burrs and clean the brass; setup my 650 with a Hornady sizing die and size/form the 300BO ; Trim the brass to size with my Little Crow WFT trimmer; Run all the brass through the SS media to clean off brass shavings/burrs; then lube and load. I only have to go through the procedure one time to form the brass, obviously, and fire forming allows me to only have to clean and neck size for subsequent reloads. Seems like a lot to do, but it's only once and I'm usually doing something else while the tumbler is running, ect.

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  • 11 months later...

my link should not have been pack blocks....maybe i copied and pasted the wrong link here is the one i wanted http://www.300BlkTal...p?f=179&t=80842

But yes its the same one posted in #10

I see you (jmorris) posted in that thread did you buy one? If so how does it work?

Did you get every thing you need to make 300 blackout?

PM me we make just what you need for your 650 machine.

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