Belted magnum collet die?

jdmecomber

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Anyone use these?

From the maker of the collet die:


Joseph,
The gauge on top of out Belted Magnum Collet Resizing Die shows the average SAAMI spec chamber. However, that may not be the same asYOUR particular chamber. Years ago, I found that shooters were using our collet die to over-resize their cases. The instructions now say to reduce the diameter of your handloads .001” smaller than one of your FIRED cases. That makes your handloads fit very well in your chamber. Many of our collet die customers come back to get the Digital Headspace Gauge, because it does the job of several different reloading tools, and it works on ALL different calibers without requiring expensive attachments or special bushings. It accurately reduces the headspace of your chamber.

I've found that most handloaders need to keep a much closer eye on their chamber clearance (at the shoulder). This clearance should be kept to a minimum, like -.002" or less. This requires going beyond the instructions that come with reloading dies. I designed the Digital Headspace Gaugeto show exactly how YOUR handloads fit in YOUR particular chamber. This information is displayed after comparing one of your resized cases to one of your fired cases. Then you can accurately adjust your FL die height to make your handloads fit perfectly - without guessing about chamber clearance.

Here are some pics of some loaded rounds.
 

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I have one. I’ve found it to be an invaluable tool on the bench. Without it I’d be absolutely forced to full length size cases so they’d chamber. The collet allows me the flexibility to just bump the shoulder back as i see fit, and body size above the belt in a separate operation.
 
I have one. I’ve found it to be an invaluable tool on the bench. Without it I’d be absolutely forced to full length size cases so they’d chamber. The collet allows me the flexibility to just bump the shoulder back as i see fit, and body size above the belt in a separate operation.

Have you kept any data about the process? Like fps with or without doing it? Case life?
 
Have you kept any data about the process? Like fps with or without doing it? Case life?
No because without it, my brass wouldn’t chamber without a little force, even after 1 firing. I buffed the brass with steel wool, and tried to chamber it, that’s when I discovered it was case expansion just above the belt, not the shoulder that was stopping it from easy chambering. It was FL size or nothing to make it work. I didn’t want to settle for that so I did some research and came across this collet die. It’s been awesome
 
No because without it, my brass wouldn’t chamber without a little force, even after 1 firing. I buffed the brass with steel wool, and tried to chamber it, that’s when I discovered it was case expansion just above the belt, not the shoulder that was stopping it from easy chambering. It was FL size or nothing to make it work. I didn’t want to settle for that so I did some research and came across this collet die. It’s been awesome

Thanks
 
can you control how much it sizes the case , or is it an all or nothing ?
The collet die ONLY sizes the area just above the belt. It’s subtle, after collet sizing the other dimensions of the case stayed the same. It doesn’t effect headspace, overall length, nothing. Just the body above the belt
 
The collet die ONLY sizes the area just above the belt. It’s subtle, after collet sizing the other dimensions of the case stayed the same. It doesn’t effect headspace, overall length, nothing. Just the body above the belt
 

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When I was researching it here, I read where the guys that used it, did so every xx firings, not each time and found it indispensable. Others seemed to be angry at the very thought that a guy would spend his hard earned money on something like it and had never used one and never would. When I get through a few firings on my 400+ pieces of 340 brass, I'll probably buy one along with the digital gauge.
 
When I was researching it here, I read where the guys that used it, did so every xx firings, not each time and found it indispensable. Others seemed to be angry at the very thought that a guy would spend his hard earned money on something like it and had never used one and never would. When I get through a few firings on my 400+ pieces of 340 brass, I'll probably buy one along with the digital gauge.
Anyone that would be mad at somebody that would buy this die doesn’t understand its purpose in my opinion. If you 100% FL size a case every time you probably wouldn’t need this die. I always FL size new brass to ensure uniformity to start with. In my 300 WinMag with a SAAMI chamber starting from virgin brass, after a single firing my headspace grew .021 inch. That means if I wanted to full length size to ensure the ENTIRE case body got sized (including just above the belt) I would be bumping my shoulder back .021”. That’s way too much in my opinion, and even with annealing I don’t think I would have gotten very many firings on a piece of brass. The Larry Willis die allowed me to size the case body just above the belt and then in a separate operation control my headspace with a .002-.003 headspace “bump”.
 
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