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Does the short(er) barrel of the G33 negate the increased FPS benefits of the .357 sig round???

Have any of you G-Talkers done a chrono comparision? G31 vs. G33???

:wavey:



 

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Your looking high 1200s for factory rounds advertised at 1350-1375fps out of a G33. Still plenty fast to be effective.
 

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Look at the Cor-bon 115 and 125 grain 9mm vs .357 offerings. It takes 11" of barrel for the 115+P in 9mm to equal the same bullet fired out of a .357 Sig with a 4" barrel. The 125+P 9mm NEVER catches up to the 125 .357 load from a 4" barrel. Even the 18" barrel was slightly slower than the 4" .357. Those are fairly hot 9mm loads too, some of the few that seem to gain any significant velocity from a long barrel.


A 3.5" .357 is short barreled, sure, but not THAT short barreled.

http://www.ballisticsbytheinch.com/9mmluger.html

http://www.ballisticsbytheinch.com/357sig.html


If you think that's a real advantage over the same gun in 9mm, go for it. People seem to love their Sig-chambered guns, say they are accurate and fun. Personally I like 9mm, but it isn't as fast as a .357 and to say +P 9mm is almost there ignores the weight and speed advantage a similar .357 will always have.
 

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The only downside to the G33 is the incredible blast. Count on permanent hearing damage if you have to shoot it in a self defense scenario. You won't notice it right away but the next day very much. At the least tinnitis forever.
 

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I get about 1,500 fps out of a 4.5" barreled G32 (same as a G31) and I get over 1,400 fps out of the 3.5" G33 using Double Tap's 125gr Sierra load. If I go with a standard 1,370 fps load in the 4.5, I get about 1,295 in the G33. To me I would see little advantage using a round in my G33 that went less than 1,400 fps out of the 4.5" barrel in a G33.

Buffalo Bore's 125gr load will do over 1,500 fps out of a 4.5" barrel, but I do not know what bullet Tim is using now for that round. The older BB rounds I have go 1,425 fps out of my G33. Keep in mind you are comparing two different barrels and you could get up to a 70 fps difference in these loads between two different barrels of the same length. I think the velocity by inch link that was posted is good.

Also, a G32 barrel works in a G33 and only stick out about a half inch. That is how my G33 is currently set up. It is virtually un-noticable in concealed carry, but make a big difference in velocity.
 

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I get about 1,500 fps out of a 4.5" barreled G32 (same as a G31) and I get over 1,400 fps out of the 3.5" G33 using Double Tap's 125gr Sierra load. If I go with a standard 1,370 fps load in the 4.5, I get about 1,295 in the G33. To me I would see little advantage using a round in my G33 that went less than 1,400 fps out of the 4.5" barrel in a G33.

Buffalo Bore's 125gr load will do over 1,500 fps out of a 4.5" barrel, but I do not know what bullet Tim is using now for that round. The older BB rounds I have go 1,425 fps out of my G33. Keep in mind you are comparing two different barrels and you could get up to a 70 fps difference in these loads between two different barrels of the same length. I think the velocity by inch link that was posted is good.

Also, a G32 barrel works in a G33 and only stick out about a half inch. That is how my G33 is currently set up. It is virtually un-noticable in concealed carry, but make a big difference in velocity.
In the past I had a Glock 23 barrel in my Glock 27. You're right: it doesn't make it any less concealable but makes for a considerable advantage in velocity.
 

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SHorter bbls don't "negate" the vel of a round in the sense that it's still going faster than a lesser round. Is it worth the extra plast & recoil is the only answer you need to be asking. I love the round, but in a shorter bbl, it starts looking like a 9mm+P. The BlackHills 124gr+P+ runs 1220fps in my G26. Only about 30fps less then the 357sig in a sim bbl. Recoil & blast are sim too.
 

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SHorter bbls don't "negate" the vel of a round in the sense that it's still going faster than a lesser round. Is it worth the extra plast & recoil is the only answer you need to be asking. I love the round, but in a shorter bbl, it starts looking like a 9mm+P. The BlackHills 124gr+P+ runs 1220fps in my G26. Only about 30fps less then the 357sig in a sim bbl. Recoil & blast are sim too.
The 10mm is a great cartridge but I think the 23 is a better option for me
than the 29 for the same reasons. A thinner full grip compact with three more rds. and it's 3-4 oz. lighter.
 

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The 10mm is a great cartridge but I think the 23 is a better option for me
than the 29 for the same reasons. A thinner full grip compact with three more rds. and it's 3-4 oz. lighter.
Not to mention a lot more good SD ammo choices for the 40 vs the 10mm. I wouldn't mind getting a G29, still, if I can't get it done w/ my G32, I probably need a rifle or SG.:wow:
 
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