Ammunition & Hand Loading > Cartridge and Shotshell reloading
Beginner Question(s)
JimP:
My brother loaded Berry's 124gr RN plated bullets with Unique and a measured it with a dipper ...... when we put it to a chronograph, we found that Unique is not a good powder to use dippers with- erratic velocities and dangerously light charges in some cases. IDK what your powder is like (Never used it) .... IME all flake powders don't meter as well as ball or extruded powders.
He switched to Power Pistol (.5cc/ 5.9 gr, IIRC) and it worked out much better, whether using a dipper or PPM ........ out of his sR9c, he was getting around 1100 f/sec.
JimP:
Ask somone with more Glock exerience than me about reloads in a Glock barrel......
--- Quote --- I also noticed on the empty cases there was more fouling on the brass(especially the first two loads) than I had noticed previously shooting factory rounds. Is there any indications with this?
--- End quote ---
Sooty cases can mean insufficient pressure to fully expand the brass and seal the chamber.
Assuming you were "working up" (starting at the start load), the first two loads leaving the cases sooty would jive with the above .....
Dan W:
Yes sooty case mouths and "sandy" residue is common when pressure is too low to obturate (read: seal the case mouth to the chamber wall) and you get incomplete powder burn.
I had this trouble with HS6 until the pressure approached SAMMI Max.
I have heard that AutoComp is similar in that it shines at the higher end of pressure limits.
I have since moved to AA#5 and my midrange loads are much cleaner. Right now I am only cleaning my G17 about every 1000 rounds ( about a season of Rock your Glock matches)
cckyle:
--- Quote from: JimP on January 16, 2013, 04:42:09 PM ---Sooty cases can mean insufficient pressure to fully expand the brass and seal the chamber.
Assuming you were "working up" (starting at the start load), the first two loads leaving the cases sooty would jive with the above .....
--- End quote ---
--- Quote from: Dan W on January 16, 2013, 07:14:39 PM ---Yes sooty case mouths and "sandy" residue is common when pressure is too low to obturate (read: seal the case mouth to the chamber wall) and you get incomplete powder burn.
--- End quote ---
Ok that makes sense. After thinking about it I remember seeing a flash for the first load maybe the second. I figured it was coming out of the muzzle, but I suppose it wasn't sealing the case with the chamber and the flash I was seeing was coming from the ejection port???
--- Quote from: JimP on January 16, 2013, 04:34:43 PM ---He switched to Power Pistol (.5cc/ 5.9 gr, IIRC) and it worked out much better, whether using a dipper or PPM ........ out of his sR9c, he was getting around 1100 f/sec.
--- End quote ---
I bought some power pistol as well when I got the autocomp. So I will be trying that next after I burn through some more of the autocomp.
Dan W, have you had any problems with the glock barrel and your brass? I have read elsewhere that the glock barrels have looser tolerances for increased reliability, but that this can cause problems with integrity of the brass you want to reload. I have a lone wolf threaded barrel on back order that I was going to use for reloads. Do you think this is necessary/helpful?
Thanks again for the input/advice guys!
Dan W:
--- Quote from: cckyle on January 17, 2013, 02:46:17 AM ---Dan W, have you had any problems with the glock barrel and your brass? I have read elsewhere that the glock barrels have looser tolerances for increased reliability, but that this can cause problems with integrity of the brass you want to reload. I have a lone wolf threaded barrel on back order that I was going to use for reloads. Do you think this is necessary/helpful?
--- End quote ---
Only brass issues related to reloading was when I have run across +p+ loads fired in a Glock 9mm. 9mm Glocks are really pretty easy on brass
I don't load .40 cal so I don't have experience with brass bulges in 40S&W.
I did run across a batch of brass loaded by Double Tap that had some big time bulges in high velocity 45ACP
Your real problem with a Glock barrel would be if/when you use soft cast lead bullets. The lead tends to build up in the grooves of the polygonal rifling and pressures can spike up very fast if the barrel leading is not cleaned out regularly
So, in 9mm jacketed or plated bullets, you factory barrel will work just fine with standard velocity handloads
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