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BRAD
you took the words right out my mouth....and i agree ...THERE IS NO FREE LUNCH VELOCITY EQUALS PRESSURE AND PRESSURE EQUALS VELOCITY
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regards daniel

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1. Standard list of Hot Core fabrications, unsupported by any known facts or credible references---

1.1. Mounting a strain gage on a rifle will spoil the accuracy.

1.2. You need a CMM to measure the ID and OD of a chamber.

1.3. Mounting a strain gage will rust your rifle.

1.4. Strain gage systems cannot be calibrated, and the results are just a guess.

1.5. PRE is completely repeatable and reliable.

1.6. PRE is calibrated.

1.7. Claims to have 20 years of experience with strain gages.

1.8. Claims that strain gages don�t work outside a laboratory.



2. Standard list of Hot Core self-contradictions�

2.1. Claims that you can, and that you cannot use factory ammunition as a maximum pressure reference.

2.2. Claims that you need SAAMI standard ammunition to calibrate a strain gage, but that you don�t need it to calibrate PRE.

2.3. Claims that you cannot use chamber dimensions to calibrate a strain gage, but that you can use brass dimensions to calibrate PRE.

2.4. Claims that he gets four significant digits measuring brass with a micrometer, but the rest of us can�t get three when measuring a chamber.



3. Hot Core logical fallacies/half truths--

3.1 Hot Core can teach anyone to use a micrometer in five minutes, and it is a precise instrument. Since it is a precision instrument, and easy to use, it follows that the dimensions of a brass casing accurately and precisely reflect the pressure of a load.



4. Most childish Hot Core behavior�

4.1. Resorts to name calling when things aren�t going his way.

4.2 Issues childish insults rather than presenting facts.



5. Actual experiment says�

5.1. Strain gage systems are very repeatable, and the one I have tested is on a par with equipment currently in use by people who write reloading books. Two cartridges subjected to the same peak pressure give you very close to the same peak reading, routinely.

5.2. Strain gage systems are easily calibrated, and they routinely produce peak pressure readings that correspond with the expected pressures of commercial ammunition.

5.3. PRE and CHE are very non-repeatable. Two cases subjected to the same pressure produce the same dimension only if you are very lucky.

5.4. Details of how to replicate my experiment have been posted, for anyone who cares to try it. You can love it, or you can hate it. The data don�t care.



6. Ken Waters actually said�

6.1. PRE is inferior to strain gages and to CUP.

6.2. PRE is a relative system only. (Relative system = not calibrated.)

6.3. Speaking of PRE, �,,,no such system of judging pressures can reveal the actual pressure in pounds per square inch or copper units of pressure.�

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... PRESSURE does NOT equal velocity... ever.. period...

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I'll do a quick "Odds Calculation" concerning denton's ability to comprehend and understand that basic fact.

Let's see here, add this, subtract that, multiply by the length of a Strain Gauge and divide by the wire diameter leading from the Gauges (to trip over). Oh yes, the rusting barrel Fudge Factor where the Gauges are glued.

And we come up with: Odds of denton understanding = 0%

And of course,

HSGS = Reloader's Pyrite(aka Fool's Gold)

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Hunterbug...



I think the difference in SAAMI specs between the '06 and the 270 probably comes from the fact that there are older, weaker '06 actions still around. That didn't happen to the 270, so you can set a spec for the 270 that is a bit higher.

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