jerryballs

Hello all, I thought i was going slowly fitting this barrel but ended up with a fit that isn't square.. my file was slight bent and i didn't catch it. the rest of the barrel is property fit and the lock up is tight. Do i need to scrap this barrel or send to a smith to tig and start again? i am worried about it being dangerous... I can't believe i did this... oh well! Your thoughts are appreciated

Just a couple thoughts to you as a new reloader. 1) Published loads are your starting point. They list things like COAL/OAL and MAX powder charge. Those are the Minimum OAL you should use. They are giving you the pressure for that load at that Min OAL. Many 9mm don't accept some bullets at longer OAL. But if your gun allows you to seat longer you should try to lengthen the load to fit your specific barrel. Max OAL in 9mm is 1.169. Seat the bullet to a longer length and drop it in your barrel. See it it goes "THUNK" and seats properly. Shorten it a little at a time till it works in your barrel. In 9mm this will give you some much appreciated case capacity and make your loads less sensitive to small component differences. Charge should be reduced 10% and you should load 10 rds each of these reduced charges and work the load up a little at a time. MAX is MAX. Most people would not load MAX with out a chrono and some experience. 2) NEVER, EVER, EVER, substitute a component of a recipe with out some serious consideration to what that change will do. Looking at your load data it's clear that load is loaded very, very short. Adding a MAG primer is a horrible idea. I would be extremely cautious with any recipe loaded that short. If your barrel doesn't allow you to load longer (I bet it will let you load much longer) I personally would not use a MAG primer in a load that short. Even if I chrono'd it. Short 9mm loads need to be treated with a great deal of respect and caution. Lengthen that load out to 1.130 and I would not be nearly as worried about using a MAG primer after I worked it up to a reasonable FPS using a chrono. 3) I don't understand why your barrel would bulge like that with a safe load. Try a different (known safe) load and see if you get that bulge. If you do get a new barrel. The bulge is way up in the chamber from looking at the picture. Maybe have a independent gun smith look at it. Great tips! Thanks! I am also thinking its an optical illusion...the silver brass tends to stand out at even the slightest buldge..where the brass colored brass is harder to see. I am going to measure and see versus factory loads. I want to get the loads down and shooting property before I start with 9 major (if ever)

Big assumptions on my part... My JoJo gun is a full length bull barrel... A Schumann actually, I load 1.165 OAL with 7.0-7.1gr of AutoComp. This behind a 124 MG JHP, and using a regular (non-magnum) CCI small primer. This load in my Jojo gun just runs and runs and runs.... When Jojo tuned the extractor/ejector with that load and one of the members was there when he ran 200 rounds through it. Said the pile of brass as a nice small pile... I have 2 recommended loads from Jojo, I'll see if I can't dig the up. One was with AutoComp... Mine above I've chrono'd from low to high temps and it's always around 170 PF... Start low and try that powder... it works really well in Jojo's guns... Alan Alan, Thanks for the tip! Everyone else...I swapped out the magnum primers and changed the OAL to 1.145...I am waiting on the chrono and I will be ready to go!

i am also using the digital franfort aresnal scale, and the rcbs 10-10 scale...

Thanks for everything guys...trying two things: 1.145 oal and 4.1 grn and then grabbing buddies chrono and going from there. I had the gun built by Jojo vidanes, as far as i know the chamber hasn't been opened up. I will report back later! Jerry

Its a published load for the hornady manual on 125 gr ...minus the magnum primers. I figured they were the culprit. Thanks for the help. I will resize, and drop some powder and re-evaluate. Thanks! Jerry

I am loading minor 9mm for my STI open gun. The minor load is as follows: 1.060 oal federal small magnum pistol primers 4.6 grn w231 hornady HAP 125grn bullets starline brass (new) I am getting some bulge on my case..not major (see pic). Is this caused by the magnum primers and the low seat of the bullet? Seems to be bulged more on the side that is nicked by the chamber I am also getting a nick in the base of the case from my chamber which hasn't done this before...What should I be looking at? I am pretty new to relaoding 9mm and fairly new to reloading period..So your help is much appreciated! Jerry

Hi Everyone, New guy here...I am not new to pistols but want to get into shooting sports this year. I look forward to asking many questions! Jerry