I recently purchased a Glock 42 and started handloading for it. Using Berrys 100gn HBRN bullets with AutoComp, COL .980, I experienced random (usually 2 out of 50) times where the slide would lock back when the magazine had remaining rounds in it .
I have seen numerous reports on the internet where other shooters had similar failures caused by ammunition. I have also read internet reports of Glock modifications to the slide stop lever. My G42 appears to have the latest slide stop lever. (My G42 was test fired by Glock on 3/17/2014). Note that Glock modified the slide stop lever by removing material from it to provide better clearance for rounds coming up from the magazine. Please note that the information about the G42 modifications was not obtained from Glock, but from internet posts.
I was loading to a COL of .980 using load data from my Lee book and the Hodgdon web site. Looking at Atlanta Arms reloads that I had shot in a G42 without problems, I measured the COL at .950. Breaking down one of these rounds, the bullet appears very similar or identical to the Berrys 100gn.
Note that the Berry's 100gn HBRN has a very round shape and comes very close to the slide stop lever with a COL of .980.
Changing to a COL of .950, I worked up a new load with AutoComp, settled on 4.0gn. I have had no problems shooting about 250 rounds since changing the COL.
Please note that I am new to reloading (about 3,000 rounds), and I do not have a Chronograph so please work up your own powder load.
I have seen numerous reports on the internet where other shooters had similar failures caused by ammunition. I have also read internet reports of Glock modifications to the slide stop lever. My G42 appears to have the latest slide stop lever. (My G42 was test fired by Glock on 3/17/2014). Note that Glock modified the slide stop lever by removing material from it to provide better clearance for rounds coming up from the magazine. Please note that the information about the G42 modifications was not obtained from Glock, but from internet posts.
I was loading to a COL of .980 using load data from my Lee book and the Hodgdon web site. Looking at Atlanta Arms reloads that I had shot in a G42 without problems, I measured the COL at .950. Breaking down one of these rounds, the bullet appears very similar or identical to the Berrys 100gn.
Note that the Berry's 100gn HBRN has a very round shape and comes very close to the slide stop lever with a COL of .980.
Changing to a COL of .950, I worked up a new load with AutoComp, settled on 4.0gn. I have had no problems shooting about 250 rounds since changing the COL.
Please note that I am new to reloading (about 3,000 rounds), and I do not have a Chronograph so please work up your own powder load.