CZ 75 9mm shooters, what are your favorite loads?
- Thread starter 2bad4u2
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Dangerous because you are right on the minimum powder charge threshold. Once you go below you run into the risk of detonating your rounds instead of having a controlled burn, or, a normal round going off.
No fear of that with Tightgroup. It's rated at very low case densities for cowboy action and I know that a fair number of folks are shooting some real gnat's fart like loads of 2.7'ish gns of TG in a .38Spl casing. If that's not a low case density fill I don't know what else would qualify. In this way that's a lot like Bullseye for being happy with very light percentage fills.
The idea of some sort of detonation has been discussed on some other forums and no one could find anything where testing had shown that a light below spec load had detonated and blown apart a gun. The general consensus after a lot of searching and folks with long histories in the shooting scene was that it was a cover up excuse for double charging or using the wrong powder.
Or it may just be that the whole idea of a light charge causing a detonation and very high peak pressures might simply be related to black powder loads where a significant air space WILL cause a very high and dramatically sudden peak pressure.
The idea of some sort of detonation has been discussed on some other forums and no one could find anything where testing had shown that a light below spec load had detonated and blown apart a gun. The general consensus after a lot of searching and folks with long histories in the shooting scene was that it was a cover up excuse for double charging or using the wrong powder.
Or it may just be that the whole idea of a light charge causing a detonation and very high peak pressures might simply be related to black powder loads where a significant air space WILL cause a very high and dramatically sudden peak pressure.
There is always a risk when one sees a fact - a blown case - and then assumes the cause to be X. "X" is an hypothesis, not an explanation. To prove it one has to replicate it, to the exclusion of other causes. like double charges and wrong or contaminated powder.
I spent years in a lab, running those kinds of experiments. Usually the hypothesis turned out to be incorrect.
Can you find any literature to support your hypothesis? I love to learn new things.
No I can't pull up any literature, I can reference the 4 hours I've spent on the phone with Hodgdon though and the people at Norma from the tour I did there a few years back. Low charges in small cases can be more devastating than high charges due to the increased speed of ignition, essentially a flash vs a controlled burn. And the 100 cases with low powder charges that I pulled apart after this happened. And the fact that the powder I was using was not metering correctly and was hanging up in the measure itself, above the measuring portion.
I'm not going to purposely, at this point, do a test with low charges and high charges to see which ones would result in another blown case. I can only rely on the information given to me by the people who make gun powder and the people who load ammo commercially.
I'm not going to purposely, at this point, do a test with low charges and high charges to see which ones would result in another blown case. I can only rely on the information given to me by the people who make gun powder and the people who load ammo commercially.
i just shoot whatever's cheap through my CZ75B. does just fine with any ammo i have tried so far. pistols are a struggle to even get the hang of so bullets won't help you much. i'm more concerned about getting every shot on paper LOL wrist movement is major for pistols. my main problem in the start was turning my wrist left as i pulled the trigger. i have beaten that problem now but i won't start thinking about improving accuracy with different loads/bullets until i can consistantly hit my targets with factory ammo. the cz75 trigger has a long creep before it gets to the actual pull. i at first pulled the trigger til the creep was gone then tried to finish it without much wrist movement. i find that it actually works better to first be confortable with your siting then pull the trigger from start to finish fast rather then pulling it after the creep. seems to get rid of the wrist movement for me and i feel after figuring this out that the trigger was actually designed the be used that way.
After a lot of accuracy testing with 115 and 124 gr bullets. The one I am always amazed with is a 115gr campro RN bullet over 4.4gr of N320 loaded to 1.135 OAL. This shoots extremely well in my Shadow. However it is the max load in my loading manual.
For 124gr Loads I go with a 124gr Canadian BDX bullet over 4.2gr of titegroup loaded to 1.115 OAL.
For 124gr Loads I go with a 124gr Canadian BDX bullet over 4.2gr of titegroup loaded to 1.115 OAL.
It was an incredibly unusual day shooting and I came a #### hair away from blowing up a brand new gun. I had (2) dud primers with one of those rounds proving difficult to extract, and (1) squib load that had enough power in the primer to push the bullet into the rifling. Thankfully, I recognized the situation right away and didn't try to chamber a new round. A quick tap with a brass road and hammer solved the problem.
Despite the minor inconveniences, I enjoyed shooting the new pistol. The Shadow seemed to like the 3.4gr. Titegroup 147 FMJ load I made up. I was only shooting at 5 yds. today to get the feel for the gun and sights but I pulled off several 2" (10) round groups fireard from a standing position. Hey, I'm not the greatest pistol shot but I'm trying.
Despite the minor inconveniences, I enjoyed shooting the new pistol. The Shadow seemed to like the 3.4gr. Titegroup 147 FMJ load I made up. I was only shooting at 5 yds. today to get the feel for the gun and sights but I pulled off several 2" (10) round groups fireard from a standing position. Hey, I'm not the greatest pistol shot but I'm trying.
Max load in manual? Bah, throw that paper away. 9mm major would suggest the information is pretty useless.
