What Level of Brass Consistency to Get Value Out of a Primal Rights CPS?

[Tsu45]

Thinking about ordering one of these. After watching the setup video and the .001 depth adjustment, it had me wondering what level of consistency is needed in primer pocket depth to really have that primer seated perfectly every time. Only brass I run a uniformer in is LC NATO to get the factory crimp out.


Any other recommendations? My RCBS hand primer has given me enough problems that I want to try something else. If I go bench primer I definitely want one that takes a tube or tray, no single primer handling.

 

[David Christian]

Try the RCBS with Holland upgrade if you want to try to measure primer depth. Less expensive than Primal rights.

http://bulletin.accurateshooter.com/2018/10/darrell-holland-upgrade-for-rcbs-bench-priming-tool/

I have never uniformed a primer pocket. I do SS tumble so they do get cleaned. Seating to contact with the RCBS or even priming on my Dillon 750 has given me the same result. <=20 ES over a 20 shot string. Depending on your discipline, IMHO, measuring primer depth might be overkill.

 

[Dusty Stevens]

If you like the best tools available you need one. It works very well no matter if you seat by feel or depth.

 

[INTJ]

I don't think any of these are as precise as the K&M Primer Gauge. It measures to cup height of the primer and the pocket depth of the case, on each and every primer and case as you seat, which allows an exact .002" or .003" crush--or whatever crush you want to use.

It took my 6 BRA ES from low and mid teens to single digits. That was also with weight sorted primers. With a good tuning node I doubt that would show up at 600 or 1000 yards in BR. With a tight tuning node it might.

 

[Dusty Stevens]

I don't think any of these are as precise as the K&M Primer Gauge. It measures to cup height of the primer and the pocket depth of the case, on each and every primer and case as you seat, which allows an exact .002" or .003" crush--or whatever crush you want to use.

It took my 6 BRA ES from low and mid teens to single digits. That was also with weight sorted primers. With a good tuning node I doubt that would show up at 600 or 1000 yards in BR. With a tight tuning node it might.

I had one of those. Sold it on here a while back to fund a donation to the site

 

[INTJ]

I had one of those. Sold it on here a while back to fund a donation to the site

Yeah it's only worth it if you can't make any compromises in accuracy at long range in small capacity cases and you are not already getting single digits ES.

If not using the K&M Gauge, seating by feel is more like to get to consistent crush than measuring primer seating depth.

 

[Dusty Stevens]

Yeah it's only worth it if you can't make any compromises in accuracy at long range in small capacity cases and you are not already getting single digits ES.

If not using the K&M Gauge, seating by feel is more like to get to consistent crush than measuring primer seating depth.

I cant make any compromises, so i sold that

 

[INTJ]

I cant make any compromises, so i sold that

I'll call BS on that......

 

[Dusty Stevens]

I'll call BS on that......

I guess our ideas of fine tools is a bit different- and thats ok for sure. I have one of every good priming tool made and still have a regular k&m i bought 25yrs ago too.

 

[INTJ]

I guess our ideas of fine tools is a bit different- and thats ok for sure. I have one of every good priming tool made and still have a regular k&m i bought 25yrs ago too.

I am mess in' with 'ya.

Given what I have seen with reducing ES with precise primer crush, my perspective has changed. The K&M Primer Gauge lets you do that visually. Now that I have used it enough I am starting to get a good feel for what .002" crush feels like. Such to the point that I think I could get the same result with other quality primer seating tools that allow a good feel when seating. I just prefer to see things vs feel them.

I think this only matters in small capacity cases in BR applications. I know that in a 300 WSM, unsorted primers seated by a cheap tool will still yield sub teen ES.

 

[Dusty Stevens]

I am mess in' with 'ya.

Given what I have seen with reducing ES with precise primer crush, my perspective has changed. The K&M Primer Gauge lets you do that visually. Now that I have used it enough I am starting to get a good feel for what .002" crush feels like. Such to the point that I think I could get the same result with other quality primer seating tools that allow a good feel when seating. I just prefer to see things vs feel them.

I think this only matters in small capacity cases in BR applications. I know that in a 300 WSM, unsorted primers seated by a cheap tool will still yield sub teen ES.

You should try a 21st century tool. Its so solid you can feel uneven anvil contact. The cps has the same feel its just a bench mounted rig

 

[dcali]

If I go bench primer I definitely want one that takes a tube or tray, no single primer handling.

Are you sure about that? I thought single primer handling would be a problem, but for me, it's really not a big deal. Probably a little slower, but priming is one of the quickest steps anyhow, so it's not a big gain in the scheme of things. I'd prefer the safety of not having a bomb next to a machine that puts force on a primer. The tubes especially are not good when they go off. It's super rare, but it does happen. Dillon presses have steel shields around the primer tubes for a reason. Lee specifically warns against using Federal primers (at least I think it's Federal, if memory serves) in their hand primers for this reason.

I've been called overly cautious for this, but I'd rater eliminate that possibility seeing as the benefits of a primer magazine are slight in my experience (although I do use the Dillon, since my hands won't be anywhere near it, and the magazine tube is shielded).

 

[INTJ]

Are you sure about that? I thought single primer handling would be a problem, but for me, it's really not a big deal. Probably a little slower, but priming is one of the quickest steps anyhow, so it's not a big gain in the scheme of things. I'd prefer the safety of not having a bomb next to a machine that puts force on a primer. The tubes especially are not good when they go off. It's super rare, but it does happen. Dillon presses have steel shields around the primer tubes for a reason. Lee specifically warns against using Federal primers (at least I think it's Federal, if memory serves) in their hand primers for this reason.

I've been called overly cautious for this, but I'd rater eliminate that possibility seeing as the benefits of a primer magazine are slight in my experience (although I do use the Dillon, since my hands won't be anywhere near it, and the magazine tube is shielded).

The Lee tech's comment to me probably 20+ years ago was if 100 Fed 215 primers in the tray ignited, it was a "significant emotional event." He sounded like he spoke from personal experience..........

 

[Brians356]

Yes, the Lee Auto Prime tool came with a caveat about Federal primers. But I'm not sure what the underlying technical issue is /was. I recall something about accumulation of primer residue on the plastic and static electricity.
-

 

[Dusty Stevens]

The Lee tech's comment to me probably 20+ years ago was if 100 Fed 215 primers in the tray ignited, it was a "significant emotional event." He sounded like he spoke from personal experience..........

There are 2 br shooters that i know of that can attest to that. Permanent significant face damage

 

[aer21]

There are 2 br shooters that i know of that can attest to that. Permanent significant face damage

Dusty, do you feel like there is a significant concern with the CPS the primers somehow going off? I don’t really see how they can.

 

[Dusty Stevens]

Dusty, do you feel like there is a significant concern with the CPS the primers somehow going off? I don’t really see how they can.

No. Way too far away but if its a concern to you greg at primal rights has a steel tube mod for it i hear. I havent seen one