[GS]

I'm not buying it either.

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[Jkrehbielp]

The most common bottle failures I had when bottling were when the neck snapped off while capping. Too many uses stresses the glass, and tiny cracks build up.

Use them, but be careful.

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[Philbrew]

I'd bet that most bottle failures happen from capping with wing cappers.  A bench capper is a good investment.  Probably faster too.

[Lazy Ant Brewing]

When I was first bottling with a wing capper, I broke two or three.  It just doesn't take that much muscle to get a good seal.  Otherwise, I've got bottles that have been capped 30 plus times with no issues.

[hopfenundmalz]

The most common bottle failures I had when bottling were when the neck snapped off while capping. Too many uses stresses the glass, and tiny cracks build up.

Use them, but be careful.

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Cumulative damage happens.

Most breweries use one way bottles that are thin and light, saves on shipping costs. Those might be 180-190 grams IIRC. I weighed some Belgian bottles I brought back from Belgium. Those are more robust due to multiple uses and high carbonation. Those were in the 320-330 gram range for 330 ml. You can tell the difference!

When touring Ayinger, they would remove labels and clean the bottles in a large piece of equipment. Then the bottles went down a line where tests were done on the bottles, defective one were automatically kicked off the line into a bin.

[PharmBrewer]

I have had no problems so far.  Being doing for six months and using the bottle over and over.

[Badgerhead]

I've snapped a few longnecks during bottling, but it ended up being because my cheapo wing capper was going bad.  When I took a look at it I saw the metal plates were all mangled.  I bought a new wing capper and haven't had any problems since.

That said, I am partial to Green Flash and Alpine bottles because the neck geometry seems sturdier.  That, and I buy a lot of their beer.  I've used their bottles for several generations with no issues - I couldn't even break them with my old capper. 

[santoch]

I'd bet that most bottle failures happen from capping with wing cappers.  A bench capper is a good investment.  Probably faster too.

Agreed.  I broke more than my share with a wing capper.  Got a bench capper within the 1st year, and I can't even remember breaking any since making that move (which is going back to around 2004).

[lizaambler]

I have been using bottles that are probably at least 10 years old and never had a problem. Now glass carboys are a different story....