<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>It is not noticely different then a .40 135gr corbon[/quote]
Absolutely not true based on my experience with my G22's and G31/G31C/G33. Fired from my G22, CORBON 135gr has much more pronounced recoil than ANY .357SIG ammo I have fired through my G31/G31C/G33, which means quicker follow up shots for me. I can shoot all 125gr .357SIG loads better than 135gr CORBON when doing double taps or rapid fire strings. Even my G33 sub-compact with 125gr JHP is easier to follow up with than my G22 with 135gr CORBON!
Also, the accuracy is nowhere close between my G22 with most forty loads and my G31/G31C/G33 with all loads I have tried. The .357SIG seems to be inherently more accurate than the .40. Especially, as mentioned above, during speed drills.
I'm not saying that the .357SIG is for everyone. Neither is the .40. However, there is a huge noticeable difference between the load you mentioned and all the .357SIG loads I have shot. They may not be ballistic, but they do exist.
Given the faster accurate shooting capabilities that the .357SIG round gives me with admittedly similar ballistics, I choose the .357 from a user standpoint. Based on my experience, the .357SIG gives you ballistics that are *at least* as good as the 135gr CORBON .40 but in a more manageable format.
Here's a Shoot-N-C target that I used recently for some speed shooting with my G31C. I don't have any .40 speed targets to compare with since I have never gotten a speed target with my G22 that I wouldn't be embarrassed to show anyone.
This target shows the results of two drills. I first loaded six rounds into a single clip and shot double tap(DT)/top left, DT/top right, single/bottom left, single/bottom right as fast as I could pull the trigger with a flash sight picture from about 15 feet. I then loaded a full clip fired a dt/left top, DT/right top and then emptied the remainder of the clip into the center diamond as fast as I could pull the trigger from a few feet further from the target than the first drill was shot, maybe 18-20 feet.
Here's a picture of the rear side of the cardboard backing that absorbed the full 100 rounds that I shot during this speed drill session. Nice groups, if I say so myself, considering that I shot all drills as fast as I could shoot and only used a flash sight picture. No deliberate accuracy work, just going for speed. Mostly doube taps and rapid strings of four or more shots at a time.
If you can do this with 135gr CORBON .40 my hat is off to you. I can't. However, I can with any 125gr .357SIG ammo that I have tried. I notice a difference.
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