Ok I will give that a try in the morning when I get back to the office. This is making me want to load some 40! I need to get a Chrono that works with semi auto pistols. Only have a magnetospeed now.
This
Yes it gets the same velocity as quickload. It is showing 9.3 Grains of AA No 7 is right at 1100 fps. Not sure you can cram that much in there though!
Loaded to the same pressure they are comparable. Obviously the 10 mm is better because it holds more powder and supposedly can be loaded to slightly higher pressure. I think the 10mm case is .142" longer. If you want more power ins a 9mm length action 40 is the answer. If you want to shot a 40 cal bullet in a 45 ACP length action shoot 10mm. Then you start comparing the 10mm to the improved 45's and that is a whole other topic!It's interesting how maximum load data for the 10mm (whether gleaned from the load books or QuickLoad) is almost always listed on the conservative side, while .40 users claim they can hotrods their .40 handloads with the same bullet-weights into the 10mm's upper range without risking a KABOOM!
So apparently we should conclude there's no energy-curve difference between the 40 and the 10mm.
It's interesting how maximum load data for the 10mm (whether gleaned from the load books or QuickLoad) is almost always listed on the conservative side, while .40 users claim they can hotrods their .40 handloads with the same bullet-weights into the 10mm's upper range without risking a KABOOM!
So apparently we should conclude there's no energy-curve difference between the 40 and the 10mm.
The 10mm has expectations that other service cartridges don't and truth is that 10mm is loaded hotter than say .40, .45, etc. even from Underwood because of this expectation. My point being that just because it's Underwood doesn't mean all cartridges are loaded to the same degree, they're definitely not. Looking at Hodgdon load data for .40 vs. 10mm with Longshot, the 10mm is about 10% faster, not 20% and that's from an inch longer barrel (5" 10mm vs 4" .40). The difference between 10mm and .40 both loaded hot isn't that great and generally hovers around 7-10% difference in velocity. Of course as I mentioned above, the advantage of the 10mm is that you don't have to reload to get pretty hot 10mm, the same can't be said of the other service calibers.
That is true but what I find interesting is people think it is just that much better on killing a bear. The real question I have is "Is it really?". With all the terminal ballistics studies that have been done there is marginal killing factor in all auto handguns. That is why they have just gone back to 9mm pretty much everywhere. I just had this conversation with my bro in law the other day. He traded in his 40 for a 10 to carry when he bow hunts in the mountains. I told him that with the proper ammo and shot placement the bear probably won't know the difference. I would bet that a whole mag dump center of mass to the biggest of griz would still end up with you badly maimed. Probably carrying whatever you can shoot the best with to get a headshot is what would make the biggest difference. I would use a 30-06 or bigger on the bear first personally! lol
