Armory Sponsor
Posted: 5/26/2013 6:39:10 PM EDT
| Loading up 300 or so rounds of bulk 223. I use the wft lil crow trimmer and a lee chamfer tool. Is it really necessary? Is there a chamfer tool that can chuck into my drill ? |
|
Unless I chamfer, I invariably end up with a lot of bullet jackets shaved by the sharp edge of the case mouth. The result will be a munged-up bullet, copper crud around the mouth of the cartridge and a mis-aligned bullet in the cartridge. It also helps to initially hold the bullet in place before seating. I think you should chamfer at least the first loading or two of new or once-fired brass.
It's an easy enough operation that I've never thought about using a powered tool. My hand-operated RCBS deburring/chamfering tool works fine. |
|
First - don't chamfer the case mouths, deburr. All that is required is enough cut to remove the burr, if there's a giant chamfer on the edge of the case mouth, it's too large.
I use the power adapter from Sinclair chucked in my rechargeable drill with a Wilson/RCBS type deburr tool in the adapter. The work goes fast. http://www.sinclairintl.com/reloading-equipment/case-preparation/case-mouth-chamfering/sinclair-case-mouth-deburring-tool-holder-prod34054.aspx This adapter also holds the Possum Hollow trimmer. |
|
I use the RCBS Three-Way cutter attacked to my RCBS case trimmer. I power it with a small battery drill.
It trims, deburrs and chamfers all at the same time. http://www.midwayusa.com/product/145038/rcbs-trim-pro-case-trimmer-3-way-cutter-22-caliber |
|
Quoted:
I use the Lee debur/chamfer tool with their three jaw chuck and drill adapter made from broken Lee Zip trim. Takes about 7-8 seconds to do both steps. For a cheap drill tool this is as good as it gets. The 3 jaw chuck makes/breaks this setup. The regular Lee holder is horrible compared to the 3 jaw. Not even in the same universe on ease of use and how well it secures the brass. |
|
Anything you can do to ease the entry of the bullet into the case will preserve the bullet. Little nicks and shavings don't mean anything at 100 yards, but they really play hell with bullet flight at 500 yards.
Chamfering is one thing you can do to keep your bullets from getting damaged during seating. Definitely worth it. |
| I used the Lyman prep station for a day, and returned it, took way too long. I have two RCBS chamfer tool's hooked to two drills, one for primer pocket and the inside case mouth and one for outside case mouth. A zip tie holds the trigger on and i can chamfer the primer crimps on 500pcs of 5.56 in about 35 minutes. Much faster than the prep stations, and I had the drills already so it was cheap too. |
|
Quoted:
I use the RCBS Three-Way cutter attacked to my RCBS case trimmer. I power it with a small battery drill. It trims, deburrs and chamfers all at the same time. http://www.midwayusa.com/product/145038/rcbs-trim-pro-case-trimmer-3-way-cutter-22-caliber That cutter also works with the hornady cam-lock (lathe-style) trimmer. I use it for all my high volume rifle calibers. You can adjust the deburr just as AeroE said - just to touch the corner and remove the burr. For other calibers, I just chuck my Lyman deburring tool in my lathe and touch the cases to it one at a time like a giraud trimmer. Goes really fast 
|
|
If you have to trim cases for correct length,then you must chamfer
Lyman make and inside / outside tool that will chamfer inside and out at the same time. Can be hand held or chucked into trimmer or will attach to a lyman trimmer... Now is you don't trim the cases chamfering is not needed... |
|
Quoted:
First - don't chamfer the case mouths, deburr. All that is required is enough cut to remove the burr, if there's a giant chamfer on the edge of the case mouth, it's too large. I use the power adapter from Sinclair chucked in my rechargeable drill with a Wilson/RCBS type deburr tool in the adapter. The work goes fast. http://www.sinclairintl.com/reloading-equipment/case-preparation/case-mouth-chamfering/sinclair-case-mouth-deburring-tool-holder-prod34054.aspx This adapter also holds the Possum Hollow trimmer. Woah, hang on... The Giraud trimmer that everybody here seems to love so much rather substantially (IMO) chamfers the inside of the case mouth. Are you saying this is in fact not a desirable thing? If so, why is the Giraud so highly acclaimed? |
|
Quoted:
When properly adjusted the Giraud is a wonderful trimmer. Anything can adjusted poorly/incorrectly. Well ok fair enough, but they're supposed to be adjusted (except for TTL) right out of the box. The chamfer and debur angles are pre-cut into the carbide cutter, so regardless of how much trimming is done the inside chamfer and outside debur cuts are going to be the same, no? This feature was heralded here last time I checked. |
|
Quoted: Loading up 300 or so rounds of bulk 223. I use the wft lil crow trimmer and a lee chamfer tool. Is it really necessary? I neither chamfer, de-burr the case neck, nor clean the primer pockets during case prep. My cases are trimmed automatically using a Dillon trimmer during the case prep cycle on my XL650 and they come out bur free. I don't do Bullseye shooting and found that I don't need to clean my primer pockets to achieve the accuracy I'm looking for. My son (younger eyes) can shoot 5/8” dia, 5rd groups using the 68grn .223 ammo I produce without inside chamfering in his Savage .223 and I can shoot less than MOA groups at 300yds with my 20" A4 with it so that’s good enough accuracy for us without the extra hassles. And, I've tried both chamfered and unchamfered case prep and seen zero difference in accuracy with these two rifles. My Dillon trimmer leaves a smooth, 4° slanted, bur free edge on the outside. I use both boat tailed 55grn, 62grn, and 68grn bullets for my .223 as well as 147grn FMJ and flat based 150grn SP bullets in my 308 and 30-06 and never have had any issues with inserting the bullets into the cases without inside chamfering. Further, I’ve removed sample bullets to check for any scratches or gouges but have found none. |
Armory Sponsor