Does it still look like the pic? or does the ramp meet an entire 360 degrees of the end of chamber?
Attachment 262961
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Does it still look like the pic? or does the ramp meet an entire 360 degrees of the end of chamber?
Attachment 262961
Here is my Gen4 40 S&W barrel.
Attachment 262963
Virtually 100% of my ammo through my OEM 40 bore Glocks are handloads. Most of those are coated cast bullets. If a loader stays with sane book loads, there are no Glock bulges. I load some of my ammo pretty hot too. Many thousands of loads downrange. The 40 brass is mostly all range pickups.
Smiles indicate loading way beyond sane levels. But that's not exclusive to Glocks. Way back when the first Glock 22s emerged, coupled with early poorly designed brass gave birth to this Glock bulge thing. Really, a thing of the past. I wish it would just die off because it causes unnecessary worry and expense on aftermarket tools.
I own a G-Rx die, but it is totally unnecessary. My RCBS sizers get brass sized so that it drops right into a gauge with boring regularity. It would be inadvisable to use a pass-through sizer to cleanup a case that has been smiled. That case is starting to sheer. It hurts nothing though to use such a tool in normal circumstances. Not me. I resize in station 1, prime in 2 and proceed around the 5 stations to the bin. NO ISSUES.
Advice? Use normal sane loading techniques and you'll have no problems.
My G23.4 OEM barrel.
https://i.postimg.cc/HsD2sHkZ/20200530-172253.jpg
So if the few thousand supposed “once fired” brass I just bought from S&S exhibit a slight “curve” around the middle then this doesn’t really compromise it after normal resizing? I normally load for accuracy vs velocity and not interested in “hot loads”. Don’t mean to sound like a broken record and I am grateful for all the useful info from everyone.
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I will NEVER load .40 S&W. Ever. I don't fully understand why, but I despise it.
If the brass sized in your sizer still has an obvious bulge or won't drop in a barrel pitch the bad ones. I have seen more bulged 40 but I have found bulged 9mm 40 and 45 acp through the years.
If the badly bulged brass slips through your process it probably won't chamber anyway.
max in curve is .432
Attachment 263036
Yes a Glock 22. (If you click on image makes it bigger.) Considering the difference from my brass and your .424, that's .008 difference (.004 on each side. Now that brass (for what it's worth) has now been shot twice. This was a case I resized normally and loaded with 5.3 gn's of Unique.
I guess if I can't resize and at least shoot brass I have one more time (using a supported chamber/aftermarket barrel), then I have a lot of unusable .40 brass!
APOLOGIES!! I reviewed my reloading notes. My max expansion is 0.434". I will modify my earlier post. Also, I downloaded the image and enhanced it a bit. That looks different than what I was initially seeing. It was a bit backlit, but I can now see in the enhanced image that it is a shape consistent with Glocks.
As I've done load development in 40 and 10mm in Glocks. 0.432" has correlated to moderate pressure loads. 0.434 correlates to max. It has been a rare occurance, but 0.435 is where smiles form, and that gets scrapped. 0.435 also correlated to loads in excess of book maxes.
Sorry to have confused earlier. If you don't see a smile or anything indicating a sheering of brass, it should be good. I've loaded many tens of thousands of Glock shot brass in 10mm and 40. No issues. Resizes and drops right into the gauge. Some cases have 20 or more loadings.
Right, above that is when the case starts stretching down into the feed ramp.
Nah, I wouldn't bother measuring. Just toss any with a smile. But if you're loading to sane levels, you won't have any with smiles.
I was merely providing that data point for reference to state that it is likely indicative of pressures below max. And your charge weights are consistent with that.
Recommend not worrying and carrying on!
I run all once fired brass through a bulge buster before loading it and then like taterhead said load them to sane velocitys (maybe one grain under max book loads) and you wont get a bulge. At least I don't in any 40 I own and that includes 4 glocks. Actually very little of the once fired brass I do get is bulged but I just got in the habbit of doing it to insure none slip by.
I was just concerned about thickness in case wall and fatigue. I just dropped the empty case I photo'd in previous post back in chamber of Glock. It still fell in without being resized. Didn't have to nudge or push it in. You said you were loading 5.8 Unique for the Lee 401-175 TC? That's at the top end isn't it? I started at 4.7 but stopped at 5.5 gn's of Unique. Groups were closing tight between 5.1 and 5.3 but I know every gun is different.
heres aliants top load for a 180 with unique http://www.alliantpowder.com/reloade...29&bulletid=42 Im about a full grain lower and that's with a cast bullet so its actually less pressure then there top end load with a jacketed bullet.