.357 bullets in 9mm

I used to shoot .357 Gold Dots out of my .38Super when I was shooting competition and they shot great. I tried a lot of different .356 bullets that shot well and a friend and custom gun maker suggested I try them in my gun. No problems with any I ever used. Being plated, I suspect they easily size down when they hit the bore. I think as long as they cycle and feed you won't have any problems using them. If in doubt, sell them to someone who would like to use them in their gun. It's no big deal to shoot a bullet .001" over.
 
Having lived in Europe and shooting/reloading 9mm for many years, I have found bullets as well as bores vary. Chambers vary as well. I have seen nominal bore diameters as large as .359
The 9mm has been around for a century now. Many countries make/have made 9mm pistols as well as ammo.
If you are unsure of your pistols dimensions and want to improve performance, my advice would be to slug your bore.
 
If the loaded rounds chamber, they might work OK. The plated bullets' cores are soft and will squeeze easily. Generally, these bullets are loaded to moderate pressures so swaging the bullets to fit the bore may not be an issue but I'd suggest starting as low as the recommendations allow.
 
Certainly drop back 10% and work back up, but they should be fine. The .357 bullets are preferred by some competition shooters and also for sub-sonic use as they seal a little better and are a little more consistent in 9mm. I have shot thousands of .356 and .357 sized slugs through 9mms.
 
Most of the Glock owners at our local action pistol matches, who reload with lead 147 grain bullets, prefer .357 sized bullets.
And these were not light loads, but for knocking down the large steel poppers.
Many of the manufacturers of plated bullets recommend the same load data as for lead.
 
S.T.
According to [more than one gun-mag article] over he years.....Early Colt .357s (as in-but not limited to-Trooper; Highway Patrolman) had .357" bores which tapered to .355" at the muzzle. If this taper did not have any adverse/ill-effect on those guns/barrels, then you should not expect any problems in yours either.
This taper was [also reportedly] key to the accuracy of these guns.
If the .357" bullets loaded in your cases will chamber easily in your barrel, then load away and enjoy the possible added accuracy by using them.....I've used .357" 110gr-125gr bullets in my 9MMs for years with no problems whatsoever. Some are more accurate than .355-.356" bullets....Some not so accurate. Just try them and see which ones work for you.

Just my $.02.

WILL.
 
.357 dia. bullets, as long as they are not jacketed (as opposed to plated) and as long as the load used is a fairly light one, should not be a problem in a standard Glock barrel. In fact, the rounded polygonal rifling profile in a Glock barrel actually should be better able to handle oversized bullets like these than barrels with conventional rifling.

Just do understand that oversized bullets = higher pressures. So, do NOT shoot oversized plated or jacketed bullets with stout loads.

Glock barrels tend to be very consistent as to groove diameter and I've never seen one with a wildly oversized barrel, like some 9mm's from various manufacturers.

As an experienced hand loader of 9mm ammo, especially using cast bullets, I can suggest with some authority that the most likely potential problem you may run into with .357" bullets will be case bulging....and subsequent chambering problems. The somewhat loose chambers in Glocks will help with this....but you still may have a problem. The 9mm, as most everyone knows, uses a tapered case....and that does not really lend itself well to oversized bullets.
 
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