So far I am trimming them on the lathe, but was wondering if there is a stand alone trimmer for these large bores?

Any help would be much appreciated.

Not that I have seen. I use a trim die from rcbs....

I use a Lyman and made a larger faced cutter for it.

quote:

Originally posted by srose:
I use a Lyman and made a larger faced cutter for it.

Can you make a cutter for the Wilson trimmer?

Saeed:
Two things to do.
CH Tool (also knowns as CH4D) can make a large trimmer for you.
Second option is for a trim die. Screw it in your press and run a cartridge cad into it. Anything that protrudes out of the top is filed off. The top of the die is hardened steel so the file won't cut into the die.
I use the trim die on .577 and .600. I believe the trim dies were custom made by RCBS. But I think a sizing die, cut off to the correct length and then heat treated for hardness will work and be much quicker to obtain.
Cheers,
Cal

Saeed,
RCBS makes a Big Bore case trimmer designed to handle the bigger cases up to .50 BMG. And Forster makes what they call the Classic 50. I don't know if they make the cutting heads for the larger calibers though. They are listed in Huntington's catalog and I have one in my reloading shop but the largest I trim is the .500 NE

I have tried the RCBS, Hornady, Forester and Lyman big bore trimmers that go to 50 BMG and none work well even for the 50. My favorite way is to use file trim dies from CH4D but they did make me a big cutter for the 50 BMG trimmer they make that can do the 700 but I really don't like it, I like the trim dies better. I had trim dies for the 577 from both RCBS and CH4D and they both worked well. My 600 NE, 600OK and 700 H&H trim dies are all CH4D. If I recall they had all but the 700 H&H in stock when I ordered but that die only took about a month to get.

Matthew

Saeed, I'm not familar with the Wilson trimmer. I will try and take a look at one.

Sam

I have only used a trim die.

I use lyman for up to 585 with bigger cutter
I added to it. Lenthened handle so it spins easier.Ed

He's a good guy to speak with too!
CH 4D

The Hornady & Redding products also look similar.

I think Graeme Wright made a larger cutter for the big DR bores. I need to check the book.

Thanks Nakihunter for the photos. I use the Lyman. The cutter head in it is threaded thus makes it easy to replace with a larger one. I've used trim dies also which work great but are kind of expensive and non adjustable. The Wilson I'd have to look at to see how cutter is made.

Sam

quote:

Originally posted by srose:
Thanks Nakihunter for the photos. I use the Lyman. The cutter head in it is threaded thus makes it easy to replace with a larger one. I've used trim dies also which work great but are kind of expensive and non adjustable. The Wilson I'd have to look at to see how cutter is made.

Sam

Sam,

Wilson have two models, one for standard calibers, and one for the 50 caliber.

We have two of the smaller model, and one of the 50 caliber.

One of the standard calibers we have modified so we can trim the very long cases with, by adding a spacer between the handle and the body.

This will trim anything:

RIP,

We like to get a bit more accurate on our cases than that black marker pen indicator you have put

Saeed,

Does the Wilson use a neck pilot?

Sam

quote:

Originally posted by srose:
Saeed,

Does the Wilson use a neck pilot?

Sam

No a pilot is not needed because the Wilson takes a case specific holder for each case and that is clamped to the rails.

quote:

Originally posted by Saeed:
RIP,

We like to get a bit more accurate on our cases than that black marker pen indicator you have put

The nice thing about the cut-off wheel, lathe, and marker pen is that you can use it to remove a large mount of brass BEFORE putting the case into the file-trim die to file off the bit to get the exact final length you want.

And of course the die will simultaneously do a final "square-up" of the case mouth with the longitudinal axis of the case.

I've used a cut-off wheel a lot...saves a lot of cutter turning and/or filing. Also greatly reduces the number of files which are dulled rubbing on the top of a super hard file-trim die.

trim die

I've been trimming with the Trim-It. Saw it in Shotgun News and on YouTube and decided to get one. I love it..I just hook it up to my hand drill and blow-and-go. I use it for 300 blackout, 300 Win Mag, and .223.

www.eztrimit.com

quote:

Originally posted by Barry Sampson:
I've been trimming with the Trim-It. Saw it in Shotgun News and on YouTube and decided to get one. I love it..I just hook it up to my hand drill and blow-and-go. I use it for 300 blackout, 300 Win Mag, and .223.

www.eztrimit.com

Unfortunately it only goes to .470 caliber... Good idea though.

I was hoping for a better answer from someone to trim 577NE, which was my weekend project. There is no set of Forester components that work, the biggest cutter (50 BMG) is just too small. I finally ended up making a piloted trimmer out of a big counterbore. You can hold the base in .75 5C collet and use the depth stop on a mill (or good drill press)for depth. Only tied up $50k worth of equipment to trim some damm brass...

Thinking of $50,000 of machinery does make a file-trim die attractive ...



The Universal RotoRip Method of case trimming:

1. Trim to gross approximation plus tolerance (Sharpie black mark) with a RotoZip cut-off tool.
Free-handing with a bench grinder is discouraged.

2. Next step in the process is to slide the case in the rubber vise blocks back in the vise, rubber blocks and all,
until only the case mouth sticks out beyond the smooth and square end of the vise jaws.
Then go to town with a bastard file until you are squared up and at trim-to length, flush with the vise, checking with calipers as you go.

3. Chamfer inside with 50-BMG deburring hand tool from Lyman, big enough for 700 NE or even 12ga. Outside chamfer with the bastard file.
Lyman hand tool is too small for that.
Touch-up with polishing spuds and a Dremel tool is permitted.

That is what I will do for RMC 20ga and 12ga brass if I ever need to.

I trim mine with clippers.

Pipe cutter