Yeah I think he forgot that The 40 caliber is Smith & Wesson.

Some compact models (think single stack slim metal frame) may hold up better with 40 than 10mm and be easier to conceal. With that said I think over time much like 357 magnum took over 38 special we may see something similar with 10mm.

Yeah pretty much (grumble) you can get conversion barrels fairly easily but even the Sig 320 is starting to run dry on slides for 40/357sig. Ammo is still occasionally available but realistically it is a reloaders round at this point but thankfully starline has a lot of brass to work with and most of the useful bullets carry over fairly well from 9mm. Still way easier than 9×25 Dillon, 480 Ruger and a few others I mess with but that’s not saying much.

A quick check of the specs reveals that my polymer 4.25″ CORE 40 is 0.9 ounces lighter. It’s practically the same weight.

…the aluminum frame SIGs certainly shot softer.”

Is it because the frame is aluminum, or is it because they were significantly heavier than your Glock? I thought, if the weight is the same, that aluminum frames transmit more felt recoil than polymer. IMO, the M&P and P30L have less felt recoil than the aluminum framed (and heavier) Beretta 96. I know there are other things at play, but I don’t think it’s a rule that an aluminum frame will always be a softer shooter. I wonder if these aluminum M&P models would have the best of both worlds because they have polymer grip inserts. I like it.

It also looks like this new model replaces the previous CORE PC model. Now it makes much more sense that they’re offering this.

If I was starting over, I’d probably skip the .40 and get a 10mm.

It isn’t nearly as popular since the FBI switched to 9mm. Ruger stopped making them. Sig dropped both .40 and .357 from their lineup. Springfield only offers it on their old XD line, not including the more improved XDs. Is Glock the only one left carrying .357 Sig?

Well I do like how I can use leftover bullets for 10mm and 40sw for load experiments as I finish one caliber.

I remember seeing one but it was prepandemic and no idea if it is still around. I will drop a link if I find it again.