Interesting test at the range. RE: Match cases

oldrodder

oldrodder

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Our club is about ready to open the new Precision 400 yard range. In order to use the range you must qualify ( Show proficiency) In preparation, I tested 4 brands of "Match" brass that I had on hand:
1. IVI Match
2.Black Hills Ammunition
3. L.C. (Lake City)
4. Lapua S.R.P.

Here are the results.

O3WSdAIl.jpg

5UfOmbpl.jpg


Shot at 100 yds, over bags, same shooter, same load, same rifle.
 
I've heard this is caused by different case capacity which I believe affects the pressures. Therefore you would have to work up different loads for the different brass.
 
You aren’t going to see the differences on good brass testing at 100 yards. Hell you’re lucky if you can tell the difference between weighed charges and dropped charges at powder burn ranges. Take it out to 1000 and find out if you have a load or not. Or maybe you want to know if you have a 500 yard deer gun or a 300 yard head shoot a gopher load, why not just take it to that distance and see if you have one or not.
 
oldrodder said:
Our club is about ready to open the new Precision 400 yard range. In order to use the range you must qualify ( Show proficiency) In preparation, I tested 4 brands of "Match" brass that I had on hand:
1. IVI Match
2.Black Hills Ammunition
3. L.C. (Lake City)
4. Lapua S.R.P.

Here are the results.

O3WSdAIl.jpg

5UfOmbpl.jpg


Shot at 100 yds, over bags, same shooter, same load, same rifle.
Click to expand...

I found this years ago when I was first starting out. I would do a ladder test and settle on a promising load. Then I would do a 20 round test and be amazed that it looked more like a shotgun pattern. They didn't have the internet and I didn't have anyone to teach me and it was all by books. I was reading in a handloading book about an experiment basically what you did and showed the differences. Different thicknesses in the brass will allow more or less capacity and thus change the pressure curve of the round which changes the characteristics of how your specific rifle reacts. Once I read that, for rifle precision rounds I use the same brass all trimmed to the same length, do my ladder test and then the 20 round test.

I love the "You must Qualify" to use the 400 yard range, never heard of that before. Must be a back story to that one.
 
hunter64 said:
I found this years ago when I was first starting out. I would do a ladder test and settle on a promising load. Then I would do a 20 round test and be amazed that it looked more like a shotgun pattern. They didn't have the internet and I didn't have anyone to teach me and it was all by books. I was reading in a handloading book about an experiment basically what you did and showed the differences. Different thicknesses in the brass will allow more or less capacity and thus change the pressure curve of the round which changes the characteristics of how your specific rifle reacts. Once I read that, for rifle precision rounds I use the same brass all trimmed to the same length, do my ladder test and then the 20 round test.

I love the "You must Qualify" to use the 400 yard range, never heard of that before. Must be a back story to that one.
Click to expand...

The CFO has mandated that the club install "baffles" to prevent overshooting the berm and ground strikes. The executive want to see some degree of proficiency to avoid unnecessary damage to the baffles. I will post pics later this week.
 
I was most fortunate switching from Hornady to Peterson brass. Peterson shot more acccurate and can withstand more pressures, than the Hornady. For the most part, different brass will have different accuracy, with the same powder load.
 
hunter64 said:
I love the "You must Qualify" to use the 400 yard range, never heard of that before. Must be a back story to that one.
Click to expand...

oldrodder said:
The CFO has mandated that the club install "baffles" to prevent overshooting the berm and ground strikes. The executive want to see some degree of proficiency to avoid unnecessary damage to the baffles. I will post pics later this week.
Click to expand...

In Ontario, the CFO tells the ranges what to do and the membership willingly assumes the bent over position. Heck, these days most gun owners will even agree with the CFO. Everyone's so scared of losing something that they no longer fight for anything!
 
oldrodder said:
The CFO has mandated that the club install "baffles" to prevent overshooting the berm and ground strikes. The executive want to see some degree of proficiency to avoid unnecessary damage to the baffles. I will post pics later this week.
Click to expand...

Our Club (SGC) requires qualification to shoot at 200 & 300 meters on Range 4. Makes sense as in any Club there seems to be a few irresponsible shooters who have no idea where there bullets impact.
 
hunter64 said:
I found this years ago when I was first starting out. I would do a ladder test and settle on a promising load. Then I would do a 20 round test and be amazed that it looked more like a shotgun pattern. They didn't have the internet and I didn't have anyone to teach me and it was all by books. I was reading in a handloading book about an experiment basically what you did and showed the differences. Different thicknesses in the brass will allow more or less capacity and thus change the pressure curve of the round which changes the characteristics of how your specific rifle reacts. Once I read that, for rifle precision rounds I use the same brass all trimmed to the same length, do my ladder test and then the 20 round test.

I love the "You must Qualify" to use the 400 yard range, never heard of that before. Must be a back story to that one.
Click to expand...

One of the local clubs wants you to qualify at 200m with a 2” 3 shot group to allow you to shoot the 300M line.
 
track said:
I was most fortunate switching from Hornady to Peterson brass. Peterson shot more acccurate and can withstand more pressures, than the Hornady. For the most part, different brass will have different accuracy, with the same powder load.
Click to expand...

Just because they have different internal capacity. You can take any brass - sort it - prep it to match standard and be as good as Pertersen brass. Quality brass just save you the trouble to prep it…and most people do not know how anyway.

Short of it, you develop a load with the same headstamp brass. Load development start by stepping up powder charge for a set of components, not by mismatching components - here brass -to develop a load. It just show the OP does not know how to enter in a load development regimen. The goal was to develop a load for qualification for the 400 yards range and this is not the way.

This was just a waste of components in my view. It’s not the proper way to develop a load. And the result - big group - show this.
 
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When I first got my Ohaus 505 scale after using a Lee, I weighted my 30-06 cases. Not every one, but a fair sample of each make. They ran from 180gr to 200gr.
 
Janeau said:
.....The goal was to develop a load for qualification for the 400 yards range and this is not the way.
This was just a waste of components in my view. It’s not the proper way to develop a load. And the result - big group - show this.
Click to expand...
How do you see that? I see nothing that looks like load development, I see an experiment using the same load in 4 different brass selections

OP, thanks for sharing
 
Janeau said:
Just because they have different internal capacity. You can take any brass - sort it - prep it to match standard and be as good as Pertersen brass. Quality brass just save you the trouble to prep it…and most people do not know how anyway.

Short of it, you develop a load with the same headstamp brass. Load development start by stepping up powder charge for a set of components, not by mismatching components - here brass -to develop a load. It just show the OP does not know how to enter in a load development regimen. The goal was to develop a load for qualification for the 400 yards range and this is not the way.

This was just a waste of components in my view. It’s not the proper way to develop a load. And the result - big group - show this.
Click to expand...

I agree. I’ve been down the road of mismatched brass. It costs $$$ and shoots dirt. Cheaper to blast corrosive ammo in a milsurp. Better results too.
 
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