Questions on 180gr 40 S&W OAL and over-pressure dangers...

Does your sizing die remove the bulge pretty good? I bet I could get a load to work, but weighing out the pros and cons, I just bought 500 rounds of Win 180 gr white box from Aim at $15.95. That’s friggin $10 per box cheaper than the local gun store.

Yeah that’s a good deal.

Yeah, my RCBS carbide 3-die sets resize them just fine, no different than my same type of dies did .45ACP from 1911s, or my same type does 9mm from Glocks and others.

The hype around Glock .40 chambers is way overdone on the internet.

Because .40 is an “envelope-pushing” cartridge, I only load them 10 times, then scrap. I have loaded a batch to 13 times successfully with no issue, however.

I haven’t shot any .40 this year though, I dont think…

Freedom munitions has some $14.95 boxes. Not sure if it’s a plated bullet though.

Yeah, my RCBS carbide 3-die sets resize them just fine, no different than my same type of dies did .45ACP from 1911s, or my same type does 9mm from Glocks and others.

The hype around Glock .40 chambers is way overdone on the internet.

Because .40 is an “envelope-pushing” cartridge, I only load them 10 times, then scrap. I have loaded a batch to 13 times successfully with no issue, however.

I haven’t shot any .40 this year though, I dont think…

I remember this “Glock RX” die thing that pushed the whole case through some kind of die and into a bottle. I saw that and thought WOW… this whole thing is a pain in the ass. If I’m not bored with pistol shooting by the end of this factory shipment, I may thing of buying the conversion kit and stuff then.

Wow, never even heard of such a gimmick, in all these years of reading multiple forums, and working directly with many folks, with regard to reloading .40 in general, and for Glocks specifically.

That would be a ridiculous pain in the
a ss.

Yeah. It was a weird creation. But it made me think that there’s a real problem with reloading (mostly 40 cal) Glock brass.

Here’s a video of the thing.

https://www.youtube.com/watch?v=kcla_1Tly7c

Could be better off to replace the barrel. Gen 3 and after doesn’t have this issue, neither do 3rd party barrels. The latter even do away with the debatable polygonal riflings.

-TL

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It’s a bulge buster, they’ve been around for ages. I use one for 357 SIG & 40 S&W. You can also use a .40 S&W LEE Carbide Factory Crimp Die with the guts removed. You push the cases completely through the die with a “pusher” like the ones used for push through sizing of cast bullets. BTW, the cases the guy was using in the video were playing very nicely with him. Many do not. I ended up with some 40 cases that came from a LE range, and there was a big difference between the cases that were fired in Glocks, and those that were fired in other pistols, presumably M&Ps. They’re available for many calibers and do serve a very important function. Normal sizing dies cannot reach the web of the cases. https://leeprecision.com/case-conditioning-tools-lee-bulge-buster-kit

Strange how thousands of us have never needed such a device. Very interesting. I guess that’s why I’d never heard of it.

This Gen 4 brass still shows visible bulges. Maybe not as bad as the older barrels, but that’s the reason I hit the brakes on buying loading equipment.

I agree. I couldn’t figure out if it was just something people were doing even though not needed like uniforming flash holes. I often talk to other hand loaders who tell me about steps they do, and I’m scratching my head and thinking “Why?”.

A big 6 o’Clock belly is bad. I’d toss that stuff.

But some swelling, even in that area, is okay. Resize like normal. I like to use a little light oil on my cases just to make the “work” easier. I spray the oil on a nitrile glove I’m wearing and massage the casings in whatever container I have them. Just gets a little oil on some of them. It makes a difference.

It’s not a gimmick, and it’s not paranoia. It’s a safety issue that needs to be addressed, trimming cases is a safety issue as well, primarily for you rifle shooters.

The brass I just shot had minor bulging. I’m sure a sizing die would put it back into shape. I’m just reluctant to take on another caliber if it’s complicated. Especially pistol. Thanks for the replies.

It shouldn’t unless the load is too hot or the barrel feed ramp has been over “polished”. I have a G23 gen3. Not problem at all. Sure I don’t do hot loads.

-TL

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This is a low round count Gen 4 LE trade in with no mods that I can tell. The load is PMC bronze factory ammo for what it’s worth. It’s not a terrible bulge, but it’s visible to the naked eye.

That’s troubling. Not supposed to happen. The bulge is due to the lack of chamber support where the feed ramp is. Glock resolved the issue in gen 3.

Perhaps PMC bronze is loaded warm? Or, very unlikely, the barrel has been replaced with a gen 2 barrel?

Could you post a picture of the bulged brass? Just curious.

-TL

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Both my Gen 3 and this Gen 4 bulge brass. The PMC is running full powah. Like 957 fps for 180 gr. I’ll try to get a pic of the brass this weekend.

Here are my hottest loads

180gr 930fps
165gr 1010fps

No bulge. The barrel is gen3 Glock OEM. Your load has higher muzzle energy. Hard to say whether it has much higher pressure, as the powder is unknown. I’m loading with fast burning titegroup. Going to your speed would raise the pressure by about 10%, which could be very close to saami limit.

As I suggested, you may want to try an after-market barrel. They advertise no bulge and conventional riflings.

-TL

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That’s crazy. I bought a few boxes of PMC Bronze from the Local Gun Store, and I thought it would be weak ammo. It was definitely full power in both 180 and 165.

Shot some Win White box 180 today, but forgot to set up the Garmin to see what it was running.

They may not be full power with optimal powder. I just happen to have titegroup, which is not the best for the caliber. The loads I have are about 10-20% below max pressure. Good enough for me.

-TL

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That’s the powder I have too. I’d love to load ammo at around 80-90% of max.