Of course, Whites Laboratory has completely debunked alll of our trusty little 'signs' of excess pressure, with careful attempts to corelate flattened primers, cratered firing pin marks, growth in diameter above case web, or even bolt lift, with actual measured pressures. None. Nadda, Zilch. All of the variables mentioned - headspace, chamber dimensions, bore conditions, bore diameter, can all affect an individual rifle's physical response to a too high pressure round, but none of the perceived indicators are reliable. Never had one, but apparently bolt lug failure is a pretty reliable indicator, and detonation destroying the rifle is said to be a strong indicator. Or, an up to date manual. Load above maximum, is above maximum.
Pressure signs = confusion
- Thread starter cueball
- Start date
Innovative
Regular
- Location
- Casselberry, Florida
ykkid ........
If your information about Whites Laboratory (never heard of them) is accurate, then they obviously don't know what they're talking about. However, I suspect that you've just received some bad information about pressure signs.
Anyone that has reloaded for any length of time, has seen that primers do flatten as you increase your load. It's easy to compare your flattened primers to the published loads, and you'll see that it's an accurate method. As you mentioned, there are many different things that affect chamber pressure, and they can all be understood by observing your fired primers.
There's no practical way to get an EXACT pressure reading like a testing laboratory. However, the very best method to evaluate your chamber pressure is to examine your fired primers. No other method is as reliable as primer examination.
- Innovative
If your information about Whites Laboratory (never heard of them) is accurate, then they obviously don't know what they're talking about. However, I suspect that you've just received some bad information about pressure signs.
Anyone that has reloaded for any length of time, has seen that primers do flatten as you increase your load. It's easy to compare your flattened primers to the published loads, and you'll see that it's an accurate method. As you mentioned, there are many different things that affect chamber pressure, and they can all be understood by observing your fired primers.
There's no practical way to get an EXACT pressure reading like a testing laboratory. However, the very best method to evaluate your chamber pressure is to examine your fired primers. No other method is as reliable as primer examination.
- Innovative
