Does anyone know where to buy one? I've tried all the usual suspects...Midway, Sinclair...?
Thank you, Uncledog
Thank you, Uncledog
6.5 creedmoor bump gauge
- Thread starter uncledog57
- Start date
Re: 6.5 creedmoor bump gauge
Well I hate to say it, but if you can get close, as is hitting centered on the shoulder, you can get a "relationship" reading so you can see how hard your sizing die is hitting it. For some cases, even a fired 40 S&W case will work.
Well I hate to say it, but if you can get close, as is hitting centered on the shoulder, you can get a "relationship" reading so you can see how hard your sizing die is hitting it. For some cases, even a fired 40 S&W case will work.
Re: 6.5 creedmoor bump gauge
Fw707 thank you! If I understand that thread right? The #30 comparator will work for a bump die for 6.5?
Fw707 thank you! If I understand that thread right? The #30 comparator will work for a bump die for 6.5?
Re: 6.5 creedmoor bump gauge
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: kolkio</div><div class="ubbcode-body">Well I hate to say it, but if you can get close, as is hitting centered on the shoulder, you can get a "relationship" reading so you can see how hard your sizing die is hitting it. For some cases, even a fired 40 S&W case will work. </div></div>
This is what I use.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: kolkio</div><div class="ubbcode-body">Well I hate to say it, but if you can get close, as is hitting centered on the shoulder, you can get a "relationship" reading so you can see how hard your sizing die is hitting it. For some cases, even a fired 40 S&W case will work. </div></div>
This is what I use.
Re: 6.5 creedmoor bump gauge
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: uncledog57</div><div class="ubbcode-body">Fw707 thank you! If I understand that thread right? The #30 comparator will work for a bump die for 6.5? </div></div>
Yes.
It'll give you a <span style="text-decoration: underline">reference</span> measurement to show how much you've bumped your shoulder back.
It works on my 6.5x47L, so it should work the same on your CM.
The thanks goes to Seth8541, but I'll take credit for passing it on!
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: uncledog57</div><div class="ubbcode-body">Fw707 thank you! If I understand that thread right? The #30 comparator will work for a bump die for 6.5? </div></div>
Yes.
It'll give you a <span style="text-decoration: underline">reference</span> measurement to show how much you've bumped your shoulder back.
It works on my 6.5x47L, so it should work the same on your CM.
The thanks goes to Seth8541, but I'll take credit for passing it on!
Re: 6.5 creedmoor bump gauge
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: kolkio</div><div class="ubbcode-body">Well I hate to say it, but if you can get close, as is hitting centered on the shoulder, you can get a "relationship" reading so you can see how hard your sizing die is hitting it. For some cases, even a fired 40 S&W case will work. </div></div>
I'm not sure what this means??
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: kolkio</div><div class="ubbcode-body">Well I hate to say it, but if you can get close, as is hitting centered on the shoulder, you can get a "relationship" reading so you can see how hard your sizing die is hitting it. For some cases, even a fired 40 S&W case will work. </div></div>
I'm not sure what this means??
Re: 6.5 creedmoor bump gauge
FW707 Thank you I got the gauge ordered through Sinclair. They confirmed the right part number and I'm all set up!
FW707 Thank you I got the gauge ordered through Sinclair. They confirmed the right part number and I'm all set up!
Re: 6.5 creedmoor bump gauge
uncle
With some ctgs. a un-primed pistol case can act as a gauge. 40s&w will work for any of the 308 based cases (yes I know here we are talking 6.5 but same principle). The datum line on the 308 is .400 the same as a 40s&w case. Take a fired 308 slip a 40s&w over it and measure with a dial caliper. Then size that case and remeasure. That's your bump.
uncle
With some ctgs. a un-primed pistol case can act as a gauge. 40s&w will work for any of the 308 based cases (yes I know here we are talking 6.5 but same principle). The datum line on the 308 is .400 the same as a 40s&w case. Take a fired 308 slip a 40s&w over it and measure with a dial caliper. Then size that case and remeasure. That's your bump.
Re: 6.5 creedmoor bump gauge
i used my rcbs 308 case mic with a shim added to the mic and it works great.
i used my rcbs 308 case mic with a shim added to the mic and it works great.
Re: 6.5 creedmoor bump gauge
Well I think some try to over complicate it. We're not really interested in "the" number, we are interested in the relationship between two numbers - fired and bumped. This is easy stuff. As long as you can get a measurement twice at the same point on the shoulder - your likely good. You can make your own "bump" gauges with different id. copper tubing and a little homework. It is also a good way to check the rifle's head-space/case growth, measure a new case, then measure a fired case. This is not magic - its math.
Well I think some try to over complicate it. We're not really interested in "the" number, we are interested in the relationship between two numbers - fired and bumped. This is easy stuff. As long as you can get a measurement twice at the same point on the shoulder - your likely good. You can make your own "bump" gauges with different id. copper tubing and a little homework. It is also a good way to check the rifle's head-space/case growth, measure a new case, then measure a fired case. This is not magic - its math.
Re: 6.5 creedmoor bump gauge
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: kolkio</div><div class="ubbcode-body"> We're not really interested in "the" number, we are interested in the relationship between two numbers - fired and bumped. </div></div>
Exactly!
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: kolkio</div><div class="ubbcode-body"> We're not really interested in "the" number, we are interested in the relationship between two numbers - fired and bumped. </div></div>
Exactly!
Re: 6.5 creedmoor bump gauge
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: kolkio</div><div class="ubbcode-body">With some ctgs. a un-primed pistol case can act as a gauge. 40s&w will work for any of the 308 based cases (yes I know here we are talking 6.5 but same principle). The datum line on the 308 is .400 the same as a 40s&w case. Take a fired 308 slip a 40s&w over it and measure with a dial caliper. Then size that case and remeasure. That's your bump.</div></div>
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: kolkio</div><div class="ubbcode-body">Well I think some try to over complicate it. We're not really interested in "the" number, we are interested in the relationship between two numbers - fired and bumped. This is easy stuff. As long as you can get a measurement twice at the same point on the shoulder - your likely good. You can make your own "bump" gauges with different id. copper tubing and a little homework. It is also a good way to check the rifle's head-space/case growth, measure a new case, then measure a fired case. This is not magic - it's math.</div></div>
thanks for the explanation
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: kolkio</div><div class="ubbcode-body">With some ctgs. a un-primed pistol case can act as a gauge. 40s&w will work for any of the 308 based cases (yes I know here we are talking 6.5 but same principle). The datum line on the 308 is .400 the same as a 40s&w case. Take a fired 308 slip a 40s&w over it and measure with a dial caliper. Then size that case and remeasure. That's your bump.</div></div>
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: kolkio</div><div class="ubbcode-body">Well I think some try to over complicate it. We're not really interested in "the" number, we are interested in the relationship between two numbers - fired and bumped. This is easy stuff. As long as you can get a measurement twice at the same point on the shoulder - your likely good. You can make your own "bump" gauges with different id. copper tubing and a little homework. It is also a good way to check the rifle's head-space/case growth, measure a new case, then measure a fired case. This is not magic - it's math.</div></div>
thanks for the explanation
