Quote from: tommac919 on July 15 2019 12:04:08 PM MDT
The bulge is not with any sharp lines but more of a gentle curve near the base... if you see actual lines, the brass is trashed
Usu, this happens if the case goes over .434 in size... most of mine from the glock come out at .431- .432
you can always mic' the case

http://i131.photobucket.com/albums/p316/BigD1871/Mobile%20Uploads/2015-12/20151203_191533_zpshkn10smh.jpg

Thanks for the picks yeah mine have expanded more than that in the oem barrel but never any lines

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Quote from: tommac919 on July 15 2019 09:25:34 AM MDT

How many reloads do you typically use on the bulged brass before you toss em ?


I see usu a slight bulge with my G20/3 ... running 180 heads and 10.4 Bdot
I consider this a med load.
Now going over 10x with Starline brass as per reloads. I'll prob run them till they crack.

Not a large bulge as mentioned, usu just the Lee press makes them fit in the go/no go gauge

My hard cast with 10.1 blue dot started flattening the case head out of my storm Lake barrel I backed it down to 9.7 for accuracy but haven't tried them from my stock barrel.
all in all I'm probably only running medium to light loads but I've just gotten started in reloading so the bulge makes me nervous just wish I could find more photos for comparison but I've never seen a smile to date
Wife just got me a chrony for birthday looking forward to using that

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Quote from: The_Shadow on July 15 2019 08:18:45 AM MDT
doe69936, have you seen the section about pass through sizing here?  On smooth rounded bulges you can recondition them using this method.
http://10mm-firearms.com/reloading-10mm-ammo/pass-thru-sizing-using-lee-fcd/

Yeah pretry sure I've read that thread though the standard lee sizing die I've been using doesn't seem to have any problems resizing them

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Sounds like good rule of thumb you know. whats interesting though it's hard to find 10mm bulge photos on the internet it seems as comparisons

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Quote from: cwlongshot on July 15 2019 06:18:37 AM MDT
In my barrels I only see bulging with top loads and its not excessive or a problem. In my Mech Tec upper I can get healthy smiles from some powders. But its because its not a locked breech. Scary just the same. I can get respectable velocities, just have to choose powders carefully. For instance no 800X heavy loads.

Too many times I see guys reporting "glock bulge" or Glock smiles when its simply case bulge as your reporting. As we all know Glock chambers are pretty well supported but also pretty generious. He ce the bulging cases with heavier loads. I picked up a Dillon sizer and it worked pretty well. I also altered a spare 40/10 die so it better sizes all the way down.

I think this might be a good use for the LEE push thru die. But CRINGE when folks who really have smiles run cases thru..  REAL Glock Smiled cases go in recycle bin!!  They are done and not safe. Metal fatigue is REAL!

CW

How many reloads do you typically use on the bulged brass before you toss em ?

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Never seen the actual smile on mine just more bulging than I get on my fully supported chamber barrel

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Will going up in recoil spring strengh keep the action closed longer there by reducing case bulge in a factory glock  barrel?

Quote from: Spudmeister on June 20 2019 12:16:24 PM MDT
I have Magnaported a few revolvers and always found the MV loss to be in the range of 20 fps.

Cool

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Quote from: Kenk on May 30 2019 08:08:58 PM MDT
Welcome doe69936!

Ken

Thank you glad to be here cool site

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Quote from: The_Shadow on May 30 2019 07:17:51 PM MDT
Doe69936 welcome to the forum!  You will likely see very near the same velocity from the ported as the non ported. maybe 25 to 35 fps less depending on the powder used and bullet weight and style.

Best regards!

Thank you glad to hear that .
Looking forward to next year's hunting season

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So when I got this g20 it came with a stock barrel a stormlake ported barrel .
Not yet owning a chronograph I'm curious does anyone have any idea what kind of velocities this would do next to a non ported 6" barrel all things being equal?
Personally I'd have gone with a non ported myself but as I said it came with the deal and I was thinking of using it for a hunting barrel but I'm not sure with those holes whether I'd just as well cut it down to stock length and carry it in there standard cause the chamber support is Awsom on my case life .
Also it shoots low with that ported

Quote from: Ruger4570 on March 25 2019 09:52:46 AM MDT
The lee 170 gr tc should be a great bullet. I use it in my 40 carbine sheild.   Like everything  else you are the main thing rhat will determine  how far to shoot

So true

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Any one use lead 170gr truncated ?

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