443 ft-lbs for a brass rem58 8" barrel. Am I crazy?

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You just have to contact RSI... THEY will explain to you that this solution CANNOT even be used on the barrel of a rem58 without having made actual pressure measures (with an other system) to calibrate their solution... You can contact all the customers of RSI and tell them they are stupid if they use it for octogonal barrels, without having made a real measure to calibrate the system.

Now... Just tell me: how am I supposed to obtain the pressure data required to calibrate this system? You got the point, or not?
 
Asking a question or two that might make sense of this thread makes no sense I guess.
 
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darkerx said:
You just have to contact RSI... THEY will explain to you that this solution CANNOT even be used on the barrel of a rem58 without having made actual pressure measures (with an other system) to calibrate their solution... You can contact all the customers of RSI and tell them they are stupid if they use it for octogonal barrels, without having made a real measure to calibrate the system.

Now... Just tell me: how am I supposed to obtain the pressure data required to calibrate this system? You got the point, or not?
Click to expand...

Darkerx,
Why would I contact RSI? You are the one saying it won't work. I used the same equipment to measure items of many different sizes and shapes. It is basically thickness and internal area driven.

Yes, you need to explain to us why it won't work for black powder pistols. RSI is obviously in business to sell pressure testing equipment to all comers big and small. Looking at the list of the large users, you can't expect us to believe they all test exactly the same guns.

I'm not going to follow your suggestion and contact RSI's customers to tell them they are stupid, In fact I think they are very smart. I think those very large and very sophisticated customers buy RSI pressure measurement equipment and the software because it works very well.

You are the one who says it doesn't work. How can we explain what you are thinking? I'm not sure why you would expect us to be able to explain to those customers that you know something the rest of the world doesn't seem to understand.
SM
 
I'm not the one who says it doesn't work... RSI do it perfectly on their website ... They explained why actual measures are required for octogonal barrels...


I have had enough respect for your advice, that I checked the best I can this solution... You should do it too, before questioning my abilities.;)
 
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darkerx said:
I'm not the one who says it doesn't work... RSI do it perfectly on their website ... They explained why actual measures are required for octogonal barrels...


I have had enough respect for your advice, that I checked the best I can this solution... You should do it too, before questioning my abilities.;)
Click to expand...

Darkerx,
You must be looking at a different site than I am. Is there a European site as well that I am not aware of? I can find no mention of an octagonal barrel anywhere. Can you give me a link to where they talk about octagonal barrels?

I'm not questioning your abilities I'm just asking where you are getting your information, I can't seem to find it anywhere.
SM
 
Well... You provided a link (your second link) where we can read:"Note: If a barrel is not cylindrical at the chamber (where the gage is glued) the system MUST be calibrated against a load of known pressure. This is particularly true of double barrel shotguns with a strong flare near the locking mechanism, octagonal barrels, etc."

That's where I heard of it.
 
@pohill: your questions were relevant, but giving definite answers to these questions is the tough part of this thread... :)
(at least, for "are repeated proofing loads dangerous for the gun?" the answer is Yes... Except if you can super-proof your gun (Loads at least 25% higher than proofing loads) which will demonstrate that it should handle proofing loads repeatedly).
 
darkerx said:
Well... You provided a link (your second link) where we can read:"Note: If a barrel is not cylindrical at the chamber (where the gage is glued) the system MUST be calibrated against a load of known pressure. This is particularly true of double barrel shotguns with a strong flare near the locking mechanism, octagonal barrels, etc."

That's where I heard of it.
Click to expand...
Darkerx,
Okay I saw that, but where does it say you can't measure octagonal barrels? Did you read their first claim?
"PressureTrace will generate PSI estimates without calibrating the system to a factory load!
I've wanted to ask you this from the beginning, but do you have some octagonal barreled rifles you want to measure the pressures in? Why are you concerned about an octagonal barrel on a Remington or a Walker you say you have?
Are you thinking you would measure the pressure on the barrel? When we say "chamber pressure" in English, it means chamber pressure, not the pressure somewhere down the barrel. That's not the same. I read where You said you were new to this, but I didn't realize you didn't understand that.
You have to measure chamber pressure over the chamber. The chamber is in the cylinder on a revolver. If you want to measure the chamber pressure, you choose one chamber and glue a sensor over that chamber and test it. This is good news for you because both the Remington and Walkers have cylinders without flutes and attachment is easy.
Read the instructions from RSI, you glue the sensor over the chamber, not in front of the chamber somewhere along the barrel. I've seen pictures of revolvers with strain gauges glued over a chamber for testing. Since the cylinders are round your concerns that the RSI PSI estimates wouldn't be close enough for you isn't a problem. This is good news, yes?
SM
 
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