I'm sure everyone has seen this video but I have a question about it. I tried embedding but couldn't figure out how.

http://www.youtube.com/watch?v=c1FIs0FDmFQ&p=C1D43B8067999B65&playnext=1&index=57

The video shows some type of dillon with a motor hooked to it that is cranking out 300 whisper brass like crazy from 223 cases. My question is this: It seems like the press is sizing and cutting the brass all at the same time. Is that so? You can see the 223 casing going into the trimmer and it comes out sized and cut to 300 whisper.

This is supposed to be a Dillon 1200 case trimmer but I've never seen something like this before. I'm in the market for a trimmer and while I don't plan on doing something like this, it could be a cool option that would convince me to go to begin my journey to the (dark) blue side.

The trimmer looks to me like a Dillon Rapid Trim.

That video finds it's what to the Reloading forum every now and then.

Yes, it is a Dillon RT-1200. It is also an older Dillon 1050 not the Super 1050. (Someone feel free to correct me if I am wrong). Yes, the RT-1200 will trim and form 223 brass into 300 Whisper in one step.

I think the guy who posted the video made his own die, maybe I read that in the video comments. You can also buy the die from CH4D. I have one, as well as a few others on the board. Yes, it works. For best results you will have to modify your tool head because the 300 Whisper case is so short. I think you can also buy the dedicated 7.62x39 RT-1200, which is modified to handle the short case.

There are a few homebrew set ups but the quickest way is the modified toolhead with a CH4D form/trim die.

jonblack

thats how I do my bras but I use a Dillon 650 and the dillon rapid trimmer. start withonce fired 223 brass and out comes ready to load 300 whisper brass!

I'm like cruizer, my set up runs off of a XL650.

Hey cruizer, do you have problems with your brass chips stringing? When I first sell mine up I got foot-long strings of brass. I determined my feed rate was not high enough to make chips so I increase the feed rate until chips started forms. Other wise I just clogged up the vacuum port. I also but some new inserts with chipbreakers but never got around to trying them out.

What is your experience?

I'm using LC and PMC brass.

jonblack

Do you mean that when it would cut the brass it would cut it into a long brass wire-type scrap?

Yes, that is correct. If I increase the feed rate, which is the rate I pull the handle on the press, it will increase the curl of the strings to the point it produces a break in the curl, or chips. The vacuum can remove the chips but not the strings.

jonblack

So if I wanted to get a Dillon 1200 trimmer that would do this, I would need to get the trimmer for 7.62x39, BUT i read that particular motor is not compatible with any other calibers. Is that true?

Just wait a little while longer and you can pick up factory brass for the 300 blackout and not have to deal with shaving and resizing brass that was not meant to be fired from your .300 whisper.

Making 300/221 brass is not that difficult, doesn't have to be expensive,and it lasts a long time unless you lose it.

I have not had one case crack without annealing and some are on their 10th reloading.

I had a post here with how I form my brass but it is too old for me to search for it.

http://www.quarterbore.net/forums/showthread.php?t=3308&highlight=make

No. Don't get the 7.62 by 39 unless you need to process a lot of 7.62 by 39. Get the one for .223 that way you can process .223 brass later.


You will need to buy the .300 Whisper form/trim die from CH4D no matter what trimmer you get. Alternatively you could make your own form/trim die, but I don't know how to do it, so I'm not going to take any guesses on how to tell you how to do it.

You will need to modify a Dillon tool head if you use any trimmer than the 7.62 by 39. But, that is not a big deal and tool heads are relatively inexpensive. You have to machine a recess to allow the vacuum collar to sit lower so you can suck out the chips.

jonblack