Quote:No, really. You seem to come across as the expert now. I asked a half serious question.
If I'm not picking up any pressure signs and I'm running larger charges and getting higher velocities, then where is the need for measuring pressure? Sure, I may burn a barrel out quicker, but so what? It'll burn out sooner or later.
Where am I going wrong? Should I be alarmed by a load that isn't showing pressure signs? Because there are plenty of combos out there that don't.
Anybody can argue that we have standards and yada yada, but really I could argue their arbitrariness.
Hey, I know! We need CatShooter around to answer this one! Somebody that's really all knowing.
No, it is just the usual bubba response. It ain't blowed up yet so it's all gud.
An expert would be a ballistician working at the ammunition plants writing the manuals. Why don't some of them post? Prolly because of the usual attitude of load'em to the edge.
The concept of "pressure signs" dates way back, but due to the use of computers and advances in metallurgical science steel have become so much more uniform, as has brass. Meaning stronger. Hey, most of the steels used in automobiles didn't even exist 5 years ago. Higher strength, lighter weight. Something to think about.
Back in the '60's there just wasn't the uniformity that exists. Back then one could get soft squishy brass and around 60kpsi you might begin to see something. Now? Use your imagination and look at the velocities. Those come from gasses pushing projectiles.
I come from a science background, and I need to know what I am doing. I don't like to play with dynamite; that can kill you. I use pressure testing equipment and have found those loads listed in manuals are actually quite correct. My .375 Weath. loads are near duplicates of Hodgdon's. My .300 Ultra loads are roughly the same; 3150fps at 58kpsi with a 29.5" barrel using 210gr Berger OTM's.
I am working on .338 A-Square and .300 H&H loads now. The A-Square manual does not agree with my results.
An extreme example: my .500 A-Square gives me 2350fps out of a 23 1/4" barrel using 110 grain RL-15. This is correct for my barrel length. The manual shows 118gr. RL-15 for the same velocity. I wonder what would have happened if I had just dropped 118 in there and squeezed one off?
These are boomers, but the principle is exactly the same whether a .17 Rem or .460 Weatherby.
The point is: does one really know?
I have been reloading since I was 13. That was back in 1972. Since then I have seen MANY articles of guns being blown up, cases rupturing and gas destroying the rifle/pistol (and that is likely 0.01% of reality). So that previous statement is false. I like knowing what I am doing. I think it is a great deal more fun anyway.