xr-nut
GROUP W BENCH
I recently got in to uspsa matches. Love it. Bought a gun way better than my ability. It is a finicky bitch and will run on box store ammo but it wants major power factor ammo. it says it in the literature and everyone I've talked with about the gun say the same. So, in an effort to not have to buy .80 cent plus per round ammo I want to load my own. I have a single stage lee, a couple scale options, the primer holder/feeder, a 9mm die set and a case tumbler.
I poked around the interweb for some load recommendations. I found a thread on brianenos specifically about 9 major using 124 grain bullets and WAC powder. That combo mixed up correct in the case puts the power factor in the 170 range.(165 is required for uspsa major scoring and what this gun is seeking) See the doc below with the recipes I stole from there, first pic.
Everyone on the web and few here have commented on the CZ barrel having the rifling contact the chamber. it does. So not any bullet will run in this gun. they just will not go to full battery, the projectile hits the rifling and stops it from loading. the option is there to ream the barrel some to get better/more forgiveness in the OAL. In the second pic you can see the trial rounds I loaded to check on the OAL and it fitting in the barrel. 9mm can have an oal of 1.160. That will just not go in this gun.(with this projectile shape) So I settled on 1.130, it fits in the barrel and just so happens there was a recipe on the enos forum that matched that oal. Seemed like a reasonable load at least compared to the rest of them in regards to powder load.
Here is the recipe I tried. 124grain coated lead bullet, 1.130 oal, 6.2gr of WAC. It is the 10th recipe down the list. I did my best to load them with the little knowledge I found reading and watching videos. Everything seemed to be good. This morning I tried the first batch of 9 in my gun. It fired the first round, tried to chamber the next. Cleared that one and the it picked up the next round(or at least it looked like it did). Turns out it didnt chamber it fully and blew the primer out.
you can see in one of the pics where the case expanded from not being fully seated. In the third and fourth pics you can see a unloaded case fully seated vs one of the trial loads not being seated.
I had experimented with different recoil springs in an effort to run factory ammo. I had left the 8# spring it after the last try and forgot about it. So with that new knowledge, I think I need to put the 11 or 13# spring that came with the gun back in and give the reloads another try.
Any tips or tricks I need to know about heading forward? This shouldnt be this difficult. I really want to learn and load my own ammo to run this gun how it was meant to be run. TIA
I poked around the interweb for some load recommendations. I found a thread on brianenos specifically about 9 major using 124 grain bullets and WAC powder. That combo mixed up correct in the case puts the power factor in the 170 range.(165 is required for uspsa major scoring and what this gun is seeking) See the doc below with the recipes I stole from there, first pic.
Everyone on the web and few here have commented on the CZ barrel having the rifling contact the chamber. it does. So not any bullet will run in this gun. they just will not go to full battery, the projectile hits the rifling and stops it from loading. the option is there to ream the barrel some to get better/more forgiveness in the OAL. In the second pic you can see the trial rounds I loaded to check on the OAL and it fitting in the barrel. 9mm can have an oal of 1.160. That will just not go in this gun.(with this projectile shape) So I settled on 1.130, it fits in the barrel and just so happens there was a recipe on the enos forum that matched that oal. Seemed like a reasonable load at least compared to the rest of them in regards to powder load.
Here is the recipe I tried. 124grain coated lead bullet, 1.130 oal, 6.2gr of WAC. It is the 10th recipe down the list. I did my best to load them with the little knowledge I found reading and watching videos. Everything seemed to be good. This morning I tried the first batch of 9 in my gun. It fired the first round, tried to chamber the next. Cleared that one and the it picked up the next round(or at least it looked like it did). Turns out it didnt chamber it fully and blew the primer out.
you can see in one of the pics where the case expanded from not being fully seated. In the third and fourth pics you can see a unloaded case fully seated vs one of the trial loads not being seated.I had experimented with different recoil springs in an effort to run factory ammo. I had left the 8# spring it after the last try and forgot about it. So with that new knowledge, I think I need to put the 11 or 13# spring that came with the gun back in and give the reloads another try.
Any tips or tricks I need to know about heading forward? This shouldnt be this difficult. I really want to learn and load my own ammo to run this gun how it was meant to be run. TIA
Well now that I have put about 4k through it all factory ammo and figuring out which of that it tolerate. I picked up 1k rounds of fiochi recently and it jammed up on me twice at the october uspsa match. looking at the rounds side by side with the federal I had been using there is a marked difference in the bullet shape. the federals drop in easy and fall back out. the shoulder on the fiochi required a push to seat and then wouldn't come back out. I likely need to send my barrel to cajun gun works and have them ream it.
![[486]](https://data.irate4x4.com/avatars/m/0/94.jpg?1700178133){kind=avatar}
I was trying to get an oal of 1.130. A LOT less area for the pressure to go.