Ammo question - .40 S&W vs .357 SIG

Wild Bill

I understand the stock barrel on a Glock 27 (.40 S&W) can be replaced with the stock barrel from a Glock 33 (.357 SIG). This intrigues me because it seems like I could basically get two guns (.40 and .357) for the price of one. However, before I shell out the money ($120) for a .357 barrel, I'd like to know if there are any advantages/disadvantages (i.e. recoil, velocity, stopping power, etc.) of the .357 round compared to the .40 round. Or are they basically the same round? In which case I'd be wasting my money on the extra barrel.

"Gun control is not about guns; it's about control." "If guns cause crime, then matches cause arson."

Edited by - Wild Bill on 07/10/2002 04:03:33

kalifornian

I'm not exactly an expert, but I believe the .357 has a much higher velocity, and thus the potential for more penetration, range and depending on the bullet configuration, more knockdown. Perhaps someone with more experience will confirm . . .



So many guns, so little money . . .

E.Williams

I would say its worth spending the $120.00 to get a whole other caliber.The .357Sig is a very fast round,has the ability to get through obstacles like glass and car doors,is a accurate round,and has very acceptable recoil.There arent as many ammo selections in .357Sig as there are in .40s&w but 125grn. Speer Gold Dots would take care of whatever your facing.The .357SIG is a good round and worth the investment.

Eric S. Williams

E.Williams

You might even like .357SIG more than the .40s&w after some usage.

Eric S. Williams

Ed45+P

I must admit I was a doubter when 357 Sig came on the scene but now my usual carry gun is a Sig 239 in 357 Sig. The round is wonderfully accurate and low rcoiling when you consider the impact with which it hits. It feeds very reliably (small diameter bullet going into larger chamber opening) and conversion is barrel only because the magazines are the same. I shoot and own several Glocks. You are probably aware that you can also get the entire Model 33 "top". It costs more but the slide will be properly marked to the barrel. Glockmeister sells just upper assemblies. One of my favorite rigs is my 34 which has the longer slide and enhanced trigger and I have a 17 top for it so I have 2 guns in one and have the enhanced bottom when it is a 17. Happy shooting. Ed

Nighthawk

You may like the .357sig better,according to a study conducted by the FBI the .40auto with a 155gr Federal HYdra Shok bullet is the number one load for one shot stops.But it is their belief as time goes on they expect as more Officer shootings are turned in the sig may climb on up the chart,I would have to look but Im pretty sure the sig is no.6 out of the top 10.Recoil with the 125gr sig and the 135gr .40 is about the same as is muzzle velocity.The sig has a slight edge on muzzle energy.

Good Luck.

Rugster

mballai

I don't think there's enough of stopping power difference between the two calibers, the .357 sig ammo is likely to cost you more, and FWIW the larger diameter of the 40 has a small potential edge for better wound ballistics.

Three Precious Metals: Gold, silver and lead

austin247

When Glock introduced the .357 Sig several years ago, I tried one out and purchased one for my duty weapon. The dealer at the supply store told me that Glock had tried a conversion to convert .40 S&W Glocks to .357 Sig and that there was a problem with the .357 Sig round wrecking the .40 frames after not very many rounds. Thus, Glock beefed up the frames on the .357 Sigs in order to correct this problem, and thus did not recommend converting any Glock .40 to .357. I don't know how true this is, but it's food for thought.