Any polymer like gun that fires .357 magnums?

Nothing. But the OP asked about an auto that shot .357. 10mm was built to be that but function better because of the rimless case.

Well then to be fair, 10mm is not .357, it's close but it's not what the OP asked about.

I personally think cartridge debates are completely retarded. Specially when you are debating handgun cartridges in Canada, where you're only allowed to shoot them at paper targets.

But back to the OP's question:

Your choice of auto pistols in .357 mag is probably limited to: Coonan .357, LAR Grizzley, Desert Eagle and Wildey with the latter being .357 Wildey and again not exactly .357 MAG.
 
Well then to be fair, 10mm is not .357, it's close but it's not what the OP asked about.

I personally think cartridge debates are completely retarded. Specially when you are debating handgun cartridges in Canada, where you're only allowed to shoot them at paper targets.

But back to the OP's question:

Your choice of auto pistols in .357 mag is probably limited to: Coonan .357, LAR Grizzley, Desert Eagle and Wildey with the latter being .357 Wildey and again not exactly .357 MAG.

Thanks.
 
Now that i bought a G20, i will make my testing, Coonan vs G20 over the Oehler... JP.

You should do that. But as others have said, comparing factory to factory can be a bit misleading. When the 10mm was introduced, the FBI found that a lot of people objected to the harsher recoil. The ammo got lowered down. Eventually, this led to the 40 S&W round. Unfortunately, the 10mm commerical rounds remained neutered. Buffalo Bore and a few others are the notable exceptions. If you end up liking the G20, you will want to reload it. Then, you will get the full pleasure of 10mm. I have a G20 and a Coonan. I love them both. I also like swapping the G20 barrels out to either .40 S&W or .357SIG. Now, I really want a G40 MOS though. (Never enough guns!)
 
Since i got a TD 10mm carbine, i have all what needed the reload the round, i will do so eventually... JP.
 
You should do that. But as others have said, comparing factory to factory can be a bit misleading. When the 10mm was introduced, the FBI found that a lot of people objected to the harsher recoil. The ammo got lowered down. Eventually, this led to the 40 S&W round. Unfortunately, the 10mm commerical rounds remained neutered. Buffalo Bore and a few others are the notable exceptions. If you end up liking the G20, you will want to reload it. Then, you will get the full pleasure of 10mm. I have a G20 and a Coonan. I love them both. I also like swapping the G20 barrels out to either .40 S&W or .357SIG. Now, I really want a G40 MOS though. (Never enough guns!)

American Eagle is the weak factory 10mm these days. The rest (mainly Rem and Hornady) are stouter and equivalent to standard 357 mag. Newer 10mm ammo like Sig and Fed Vital-Shok, if you can find it, is not too far off some of the original Norma loads. I'd like the Glock 40 as well.

I had the Coonan for a while and really liked it. Totally reliable and very accurate. I did not find the grip that long or difficult to control. Generally the folks that don't like the Coonans grip are the ones that have exclusively shot 1911s for years and are expecting the Coonan to have a similar feel. One thing I do like about the Coonan is the grip length. My palm doesn't hang off the end like it does with most 1911s. I've heard rumours that Coonan may make a long slide version, in which case I'll be buying another.
 
Norma 10mm was hot.

also most 10mm barrels were not fully supported. I know my deltas weren't, and some glocks. My latest was a fully supported ramped barrel, make quite a difference in higher loads.
 
Norma 10mm was hot.

also most 10mm barrels were not fully supported. I know my deltas weren't, and some glocks. My latest was a fully supported ramped barrel, make quite a difference in higher loads.

Yea they were. I think they started at 200gr at 1300 ft/sec and then toned them down to 200gr at 1200 ft/sec which is still hot. The Sig and Fed Vital-shok is 175 or 180gr at 1250-1275 ft/sec, so pretty hot too.
 
Fun thread...

As to the OP the answer to a plastic 357 is no...there ain't.
The query didn't really provide any details as to what was the shooter looking to know/do/have in the end.

That said the original query definitely set up the Glock10mm rabbit hole as Creamysmooth has well illustrated IF a shooter was looking for a polymer pistol bringing 357 ballistics to the table it is all there in spades....as well as eliminates rimmed cartridges and a freakish long grip length. Would the shooter be handicapped if buying off the shelf...particularly in Canada...YES.
But who wouldn't hand load 10mm especially if it's for serious use?? A very user friendly handloaded round too....straight wall case of strong modern design.

Aside from the awesome ballistics and flexibility of the 10mm cartridge, the G20 brings lightweight polymer construction, modern engineering, quality, strength, accuracy, mag capacity, reasonable barrel length, affordability to the table.
 
comparing apples to oranges isnt helping. try max load 10mm vs max load .357. nice try cherry pickers.

Hornady Reloading Manual, 7th Edition:

.357 Mag
140gr bullet - Max load is 18.4gr of H110 giving a muzzle velocity of 1400fps for a muzzle energy of 609ft-lb from an 8" barrel.
158gr bullet - Max load is 16.0gr of WW296 giving an MV of 1250fps for an ME of 548ft-lb, again from an 8" barrel.
180gr bullet - Max load is 12.6gr of 2400 giving an MV of 1150fps for an ME of 529ft-lb, again from an 8" barrel.


10mm Auto
155gr bullet - Max load is 12.9gr of Blue Dot giving an MV of 1450fps for an ME of 724ft-lb from a 5" barrel.
180gr bullet - Max load is 10.7gr of Blue Dot giving a muzzle velocity of 1250fps for a muzzle energy of 625ft-lb, again from a 5" barrel.
200gr bullet - Max load is 9.4gr of Blue Dot giving a muzzle velocity of 1150fps for a muzzle energy of 587ft-lb, again from a 5" barrel.


No cherry picking. The 10mm eats the .357 easily with 32% more muzzle energy with the 155-158gr bullets and 18% more energy with 180gr bullets, all from a barrel that is 37.5% shorter. I wasn't looking at anyone's factory loads, I was looking at the max loads I can make at home without going beyond SAAMI standards and the 10mm wins that contest hands down. I don't hate the .357, but those saying it is equivalent to the 10mm Auto are not correct.


Mark
 
After having read this thread I have one question:

Why does it matter at all if either 10mm Auto or .357 Magnum have a marginal muzzle energy advantage over the other? As far as I'm aware there are very few hunters in Canada using either, other than a few lever actions in .357.
 
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