300BLK case forming mass production
- Thread starter Gatehouse
- Start date
Mean Steak
CGN Regular
- Location
- Central Alberta
I use a mini chop saw with a small homemade jig. It cuts the brass at the same length every time.
Then I run the brass through the sizing die. Then trim to length.
Easy as pie
Then I run the brass through the sizing die. Then trim to length.
Easy as pie
Get ready for a lot of elbow grease...
- Chop cases to rough length
- deburr/chamfer
- lube and size
- trim to length
- deburr/chamfer
- clean
I think it took me around 3hrs to make 100 cases and my fingers were sore. Got up to 500pcs of brass and stopped there.
My jig was a piece of wood clamped onto the fence of my mini chop saw.
- Chop cases to rough length
- deburr/chamfer
- lube and size
- trim to length
- deburr/chamfer
- clean
I think it took me around 3hrs to make 100 cases and my fingers were sore. Got up to 500pcs of brass and stopped there.
My jig was a piece of wood clamped onto the fence of my mini chop saw.
That's not a bad idea at all. I'll prob anneal them now. So far, I only used 1x fired brass and haven't had any cracked necks etc. Some cases are on their 3rd reload.
BlackSheepBrass
Regular
- Location
- Cobourg, Ontario
Annealing will help, especially reducing springback when forming final shoulder. I do not anneal as I from from 223 to 300 blackout with three incrimental bumps. This ensures it stays where it should. However if you have the time, energy, and means to anneal it is not a bad idea as you are working the case a significant amount
Mean Steak
CGN Regular
- Location
- Central Alberta
It's just a hollow metal tube that fits the casing. Nothing fancy.
I use my Rem 223 brass to make 300BLK.
I use a 6" mini chop saw from princess auto, cut them off at the shoulder, debur them, one pass through the sizing/decapping die, trim to length, inside/outside chamfer, prime, load, factory crimp die.
I don't bother with annealing. I have some brass with five or six firings and still no cracked necks, other than some lost in the grass I haven't had to retire any brass other than some with loose primer pockets from some hotter loads during my initial load testing a couple years ago.
I have 2 semi autos and a bolt action in 300BLK and the brass gets used in all of them, never had a problem with chambering in any.
5000 rounds will take you a long time to make but will last you two lifetimes
I use a 6" mini chop saw from princess auto, cut them off at the shoulder, debur them, one pass through the sizing/decapping die, trim to length, inside/outside chamfer, prime, load, factory crimp die.
I don't bother with annealing. I have some brass with five or six firings and still no cracked necks, other than some lost in the grass I haven't had to retire any brass other than some with loose primer pockets from some hotter loads during my initial load testing a couple years ago.
I have 2 semi autos and a bolt action in 300BLK and the brass gets used in all of them, never had a problem with chambering in any.
5000 rounds will take you a long time to make but will last you two lifetimes
One of my favourite rounds to make, but from once fired .223 it is a lot of work. I bought the mini chop saw and that is just the start the journey..........
A quick d&c, then cleaning and sizing then annealing then trimming (well worth buying the drill adapter unit). Oh, more de-burring and chamfering and cleaning. Then ready to go. A lot of work, but it is a good round to use. I have purchased some new brass but it is pricey and thus a bit prohibitive in cost.
Candocad.
A quick d&c, then cleaning and sizing then annealing then trimming (well worth buying the drill adapter unit). Oh, more de-burring and chamfering and cleaning. Then ready to go. A lot of work, but it is a good round to use. I have purchased some new brass but it is pricey and thus a bit prohibitive in cost.
Candocad.
Which is why I use a brass catching on my 300BLK AR. Can't afford to lose that brass! lol
