Ah. Yes, the whole point of the test. I missed the comment somehow.Note the following statement regarding the data:
Here are some examples, the first round the barrel is pointed down when cocking the gun vs the other five shots in which the barrel is pointed up.
Note the following statement regarding the data:
Here are some examples, the first round the barrel is pointed down when cocking the gun vs the other five shots in which the barrel is pointed up.
Yes, I always pointed the barrel down when cocking the gun on the first shot and pointed the barrel up on the other five. That exaggerates position sensitivity, but it was the only way to measure it consistently load to load. Its no big deal as long as I shoot like Marshall Dillon and tilt the barrel up when I cock the gun.In looking at the OP's data, it's always his first shot that throws a wrench in things by almost doubling his ES. That seems like an unusual coincidence.
I reload 9mm, 45 ACP, 38 Special, 357 Mag, 44 Special, 44 Mag and 45 Colt. 45 Colt is the only caliber that exhibits such a discrepancy between the slowest and fastest bullets. It's also the case with the most empty space by a large margin.I guess I don't understand this. I've lost count of the times I've pulled a revolver out of a holster, raised it to level and shot something without a loss in velocity.
35W
The 45 Colt is the poster child for Trail Boss ... which, itself, is now the Bitcoin of the smokeless powder world, trading at heretofore unimagined levels on GunBroker.I reload 9mm, 45 ACP, 38 Special, 357 Mag, 44 Special, 44 Mag and 45 Colt. 45 Colt is the only caliber that exhibits such a discrepancy between the slowest and fastest bullets. It's also the case with the most empty space by a large margin.
FFFg.The 45 Colt is the poster child for Trail Boss ... which, itself, is now the Bitcoin of the smokeless powder world, trading at heretofore unimagined levels on GunBroker.
45 Colt is the only caliber that exhibits such a discrepancy between the slowest and fastest bullets. It's also the case with the most empty space by a large margin.
I shoot the same 45 Colt loads out of a Rossi R92 and they don't exhibit that huge difference in velocity. I figure the barrel gives the powder a chance to burn completely. I think the difference between slowest and fastest is less in the Blackhawk with the 7 1/2 barrel too. I'd have to measure a lot more loads to prove that definitively though. I'm just happy I'm getting over 800 FPS out of the longer barrel.It's interesting.
I've used Unique in .45 Colt, among other cartridges, for years and years. Given my usage case, I don't really care about position sensitivity... the bullets hit the target, more or less where I want them to. I've also used Unique in .45-70... talk about a cavernous case!!! ...the front and rear of the case have different zip codes... I don't see anything in my notes about big velocity spreads, or crazy accuracy issues. Some of that, of course, might be because of the longer (32") rifle barrel, but if consistent ignition was a problem, I'm sure I would have seen it.
I figure the barrel gives the powder a chance to burn completely.