I have been tossing the idea around of going to all 9mm. I currently have a Glock 17, 19, 21, and a 30. Im thinking out dumping one or both of the .45s and pick up a 26 or 34. I have a ton on Glock 9mm mags and think it would make sense in the long run to make the switch to all 9mm. Am I crazy or is this a good solid idea?
Well it’s definitely not a bad idea. You just have to decide what, if anything, you feel you’d be giving up by ditching the .45s and if what you’d gain by going all 9mms would be worth the trade off.
Personally, I’m all Glock 9mms and except for the occasional pang of a “.45s are cool” jones, it’s been good for me.
Nothing wrong with that at all. It’s the most common handgun caliber in the world, so you’ll likely have a steady supply of the latest and greatest loads(unless Obama changes that), it has a good track record, and it is available in a wide variety of firearms. If I were to switch to only one handgun caliber, it would be 9mm. I’ve cut back to two service calibers(9mm and .40S&W), and one hunting caliber(.44magnum).
I made that same jump last year. No regrets at all.
I think it’s a smart idea, especially in light of possible future limits on standard capacity magazine availability.
Got rid of all my .40 and .45 autos, and .44 and .45 revolvers in 2006-2007. In handguns, I’m down to all 9mm (Glock, Kahr, and STI) except for a pair of S&W 642-2s. Sure does simplify the ammo stockage issue.
I don’t think I’ve given anything up in terms of overall effectiveness, either. I can shoot 9mm a bit faster than .40 or .45, especially one-handed or strong-handed only.
I see no need to dump every other gun you own.
Stockpiling pistol ammo doesn’t interest me at all. I keep like 500 rounds of Mil 9mm, and a box or two of Gold Dots in 40 and 9. I stack rifle ammo up though.
But along the same lines, I’m all AR, and ALL 5.56… No AKs or .308s to have to maintain inventories of mags and ammo for.
Sounds dull.
I really enjoy different caliber handguns (rifles too for that matter). .22 thru 44Mag for me.
I have standardized on the following handgun calibers:
22LR, 22 MAG, .32 ACP, .380, 9mm, .38 spec. .357 MAG,
.357 SIG, .40 S&W, .41 Mag, .44 mag, .44 Spec, .45 ACP
and .45 Long Colt.
I dropped the .25acp, 10mm and odd ball calibers.
Now I have to start cleaning up my rifle calibers, then Black Powder and maybe Shotgun.
I am NOT going to touch my archery stuff! TOO MUCH WORK to figure out what I have.
I think its a very solid idea, especially with glocks as most of the mags are interchangeable. I don’t think there’s anything wrong with holding on to 1 or 2 odd ball calibers or pistols though. I’m in the process of doing the same 9mm transition thing myself. I’ve got G19, and 34, and will be picking up a 26 when I get home. That doesn’t mean though that I “have” to get rid of my Springfield 1911 .45 (because I’m an american) and my S&W 642 .38 spc (because I’m practical), though I don’t shoot these last two much so ammo doesn’t hurt the piggy bank as bad.
its the 9mm glocks that I shoot 95% of the time so the majority of my logistics is really easy…and having a little variety is…nice 
In my opinion you’re doing the right thing =) but if you “have” to hold on to a .45, it’ll be ok 
It is one of those projects that really just masks another gun buying spree! I get these “ideas” all the time. It won’t last!
Not a bad choice if you only want guns in the 9mm. Given the cost, it’s economically a wise decision. You can train other family members to be proficient in it’s use from young children to the elderly.
Nooooooo…don’t do that! I mean, if your only goal is to save money versus .40 and .45, or to simplify storing your ammo or something, then sure.
But you know, variety is the spice of life? Shooting all one caliber, all the time, makes Johnny a dull boy. 
I think there is some over-analysis here. There is no reason to have just one caliber or just one style of pistol. Enjoy a 1911 platform. Indulge a single action in 45 colt. Hunt with a 44mag. Be a range hero with a .500. Find flexibility in a 38/357. Life is too short. Live large.
I posted a bit ago on cutting down on a ton of guns rather than owning 50 of a bunch I would rather own 5 of each of a few and more of others but narrow things down
I used to have a lot of types not nearly as much as some I am sure
but at 45 years old and a family and less time I am finding these days I like to master things more than have variety of types to shoot ? again nothing wrong with it I love shooting a ton of stuff but at the range I can say hey want to trade so I can shoot yours and you can shoot mine ? and I am happy
I do like the idea of having 9mm and .223 as the main
I still want 45 just cause I am old school guy and I want and love the 308 round
so if you want to for your own reason I say go for it also what do you shoot best and feel the best with ? that is what you should focus on
IMHO, that is the problem with most shooters, including myself. We don’t concentrate on being proficient (manipulations, trigger reset, dry fire, and accuracy) on one gun. I used to bring 3 or 4 guns per range session (9x18, .380, 9mm, .40, or 45), now just one gun (My daily carry mostly) and shoot around 200-300 rounds practicing bullseye shooting, strong side, weak side, draw fire (single and doubles), bill drills, back to bullseye, then I’m done. I switch guns every now and then, to stay proficient, but still only one gun. Mastering one gun is IMHO more important than not being a master of any handgun you own. YMMV.
All of my handguns are 9mm and several more are planned.Sharing ammo(and mags if possible)is always a plus.
9mm
5.56
12ga
…+ a Rem 700 somewhere between .243 and .300wm(no idea where i want to go with it yet).
Everything i would ever want/need.
Selling the G21 and G30: sure, if you don’t shoot them or need them.
Buying a G34: Why? What role will it fill that you can’t achieve with your 17 & 19?
i did this a while back…
I carry 9mm Glocks almost exclusively (sometimes a J-Frame on those occassions I can’t carry my G17)…and standardized solely on them…
i found I missed some things, particularly a 1911, and i had a hankering to give a Sig a go again…
well, I’m back to where I was…
the truth of the matter is, when I go shoot, I shoot my carry and HD guns…they are both G17s…so my Kahr and Sig will likely be leaving soon
I do think, though, that this time I will keep the 1911…i love old slabsides…i learned to shoot on one, and it has a very nostaligic appeal for me…if it were more practical i may carry one again when and if my shoulder heals…
but I see no reason not to replace the Kahr with a G26…it would take the same mags as my G17, i could set the sights and trigger up exactly like my EDC, and do any work that needs to be done to it myself…
whats the old saying? be afraid of a man who only has one gun? i guess I am expanding that to pretty much one type of gun…me, i guess i shoota the glock
Beware of a man with one caliber, he will know how to use it.
I just hate grabbing the wrong mag or ammo box to go to the range. Add in standing by a box of mags and pulling them out and trying to divine what they go to.
One caliber and mag system is elegant. Always lots of spares.
While I agree that you should always be aware of the guy that shoots only one gun even if its a Mossberg, I cant imagine life without a 1911.
There are just way too many cool platforms to have just one even if it appears to
add up on paper.