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6" Double Stack Longslide Semi-Auto Choices?

4K views 60 replies 7 participants last post by  sep 
#1 ·
I want to purchase a 6" Longslide double stack. Which manufactures & models are available:

Price: up to $2,500
Brand: NOT RIA or EAA Witness Match

I'm aware of these:
Glock 40
Tanfoglio Hunter
STI Perfect 10
Others: ??

Please share details if you own or are familiar with dependability.

Note: it must be able to digest 1,250 FPS loads reliably.

Thanks!
 
#3 ·
I bought an STI Perfect 10 a few months ago and it has become my favorite 10mm. I'm keeping track of my rounds fired so I know when to replace the recoil and hammer spring and I've only put 250 rounds through it thus far. All have been 180 and 200 grain handloads. 180 plated and XTPs and 200 grain XTPs, Beartooth and DT 200 grain WFNGCs and 190 grain Montana Bullet Works 38-40 loads.

I will be sending it back to STI for a trigger job and to have it cerakoted. The trigger is a little heavy for my preference. The pistol has been flawless in performance. I replaced the front sight with a Dawson Precision fiber optic as my old eyes struggle in the woods with black on black sights.

As a basis of comparison, I owned and later sold a Glock 20 and bought a Glock 40 and recently also purchased a Dan Wesson Bruin. So, when I shoot, I shoot all three pistols. Right now, the Dan Wesson has the best trigger and the best front sight (fiber optic and tritium) of the three 10mm pistols I own. Shooting the Bruin is what caused me to re-evaluate the STI trigger.

The STI is a well made pistol, has a two piece guide rod and is kind of a hassle to reinstall the recoil spring because you're trying to compress it and hold it in place with one hand while turning the guide rod to screw it together. It's not a huge problem, just a bit annoying. Despite that one minor issue, it's a hand filling piece of equipment. Cerakoting it will remove any concern I have of the slide rusting on an extended hunting trip.

My G40 sports a KKM barrel, Dawson Precision adjustable rear and fiber optic front sight, Lone Wolf takedown lever, and Zev Tech Fulcrum trigger. I added a Gen 4 stainless RSA, a Glock Store Thug Plug and 4 ounce brass weight to the bottom of my magazines. The intent of these last weight adding mods is simply to make the pistol heavier. The G40 makes the most sense for woods carry because it can easily be disassembled and reassembled without tools in the field and is essentially worry free in terms of rust while in the field. I have 500 rounds through mine and it has been reliable with all the same handloads as my other 10mms. Last weekend, firing all three pistols, I experienced one failure to feed with the G40 but no failures of any kind with the other pistols. It surprised me as the G40 has been very reliable. Regardless, I don't concern myself with its reliability and would have no problem carrying it for defensive purposes. The biggest improvement to the G40 is the Zev Tech Fulcrum trigger. It's actually a big improvement in the length of the trigger pull and the pull weight is pretty consistent.

I had a Trijicon RM06 on my G20 and S&W 629 and just couldn't get used to acquiring a target quickly. Because I live in Alaska, I need my pistols to be able to be deployed quickly for defensive purposes when I'm hunting in an area with bears. The Trijicon might work just fine with the G40 slide cutout but I am most accustomed to using iron sights so that's what I'm sticking with for defensive purposes. If I lived in a area where defensive use of the pistol was less likely, I would probably mount the Trijicon on the G40 as it makes shooting easy.

Hope this info helps.
 
#9 ·
I haven't chronographed these loads. I'm not pushin em too hard either as my focus is on developing the most accurate hunting load possible with both 200 grain XTPs and hardcast. I want max velocity for the powder I'm using (Blue Dot, AA#9, Longshot) but I won't sacrifice accuracy for 50 fps additional velocity. It's now getting too cold up here to develop any loads at the outdoor range so I'm just gonna shoot practice loads til spring when I can properly work up a load outside. I don't have access to an indoor range properly set up for load development.
 
#5 ·
I don't have much time to respond to this but, quickly, i can say that the only model out of the three you listed i OWN is a Glock 40 MOS. For perspective, though, i also own a Fusion 6" 10mm longslide 1911 "Hunter" (single stack). In the past, i have owned DW/CZ Razorback 5" single stack 1911, every generation of G20 and every generation but 4th G2and bd a Kimber STII in 10mm.

The best out of then all??

Well, until the G40 arrived --> immediately fitted with my old G20's 6"KKM barrel (later dyed black via AlTiN process), red dot, fixed DP co-witness rear and FO front sight, Ghost Edge 3.5lb trigger and spring kit --> the Fusion had it hands down.

But NOW - the gun holding the title of allowing me to shoot my best group at long range is now the G40. Likely only due to the optic, but that counts for something: my PLASTIC GLOCK can now hang accuracy-wise with my $2k+ custom 1911.

Quite honestly, the two pistols are very different and both amazingly effective and great shooters, both 100% reliable AND able to digest my hottest hand loads with ease. I mean that. Both are tough guns.

1. Rumor was that the Fusion used mostly STI parts.
2. My next 10mm will likely be the STI Perfect 10. NOTHING about that beast I don't like and STI is probably my favorite of the semi-custom shops.

My vote goes to the Glock 40 or STI Perfect 10. HANDS DOWN.
 
#7 ·
If you have the cash, no reason not to get the STI. If you are unsure about spending all that money, I can HONEST TO GOD say that the G40 is 99% of the gun the STI is.

The Glock 40 is that good. It even comes with three mags and changeable grips. Extremely high value.
 
#15 ·
Congratulations on finding one! I'm running the Dawson Precision STI Fiber Optic Front Sight 180T/110W/Wide Partridge Serrated SKU 020-039.

I may order the same height and width sight again except this time the wide ramped serrated instead of the partridge. I'm running a nylon chest holster and a G Code XST tactical holster. The partridge style front sight works fine with both of them. However, I had a nylon hip holster but the front sight would hang up on it. So, if you want to go with a nylon hip holster, you may want to consider the ramped version instead of the partridge version of the front sight.
 
#17 ·
I emailed STI about the recoil spring weight and replacement interval and here is their response:

"You can actually find some of that information on the STI website when you look up the Perfect 10. 18# recoil spring 22# hammer spring and as far as replacement goes it really depends on the ammo you are shooting. Really hot ammo every 3 to 4 thousand rounds, target ammo every 5 to 6 thousand rounds."
DC

David Cupp
Employee Owner |Product Manager
512.819.0656 | Fax: 512.819.0465


One final tidbit of info I learned. I ordered an extra magazine from Dawson Precision and thought it was for 10mm. When it arrived, the package label was marked 40 S&W/10MM and when I compared it to my original 10mm magazine which came with the pistol, I noticed the new magazine had longer feed lips than the factory original. I called Dawson Precision about it and they told me some STIs will run both 40 and 10mm magazines and some won't.

So, I ordered three extra 10mm magazines from Dawson Precision. They didn't have em in stock at the time so they put in a special order to STI as STI makes their own magazines. I don't know if the 40/10mm magazine will work in my pistol or not as I haven't tried it but I'm confident the 10mm version will.

Other than that, there's really not much to be concerned with the Perfect 10. It's a really great pistol.
 
#20 ·
I just looked at Dawson Precision's web site and I don't see a specific 10mm magazine just the 40S&W/10mm versions. If you call them and tell them what you want, they can special order it if they don't have it. My magazines' labels say Special Order-STI Parts STI 2011 10mm mag 126 mm 6/16. The SKU number is 519-000P.

You can purchase 120 mm, 126mm, 140 mm, and 170 mm magazines. The 120mm and 126mm fit flush in the pistol. If I remember correctly, the 120 mm is a ten round magazine, the 126mm is a 14 round magazine and I think the 140mm holds 17 rounds while the 170mm holds 22 rounds. I don't know if they make their own springs or not. I think you can also order the magazines from STI too.
 
#21 ·
Forgot to address the really hot ammo issue and the spring weights. They didn't elaborate on it. I just assumed it meant full power loads such as those either handloaded or factory ammo such as Underwood, Buffalo Bore or Double Tap and target ammo to be either wimpy handloads or your typical factory stuff as offered by Remington, Federal etc. Medium velocity stuff.

The spring weight surprised me too as the Perfect 10 is sprung exactly opposite of my Dan Wesson Bruin. My Bruin has a 22 pound recoil spring with an 18 pound hammer spring.
 
#23 ·
sep: STI update. I spoke with Brandon @STI today. He told me their web site is wrong on the recoil spring: it is 26# (not 18#)! I told him I would be shooting 180gr between 1200-1300 FPS. He did recommend changing the recoil spring every 4-5,000 rounds. He confirmed that rounds longer than 1.250 may not feed. How long are your loads? Dawson was not aware of the new "10mm" specific mags. Brandon gave me the part #:700210012691-00
 
#24 ·
Lol, so both the web site and Brian Cupp, Product Manager of STI are wrong about the recoil spring weight? That doesn't bode well for STI. Any idea how to measure spring weight? If there is an expedient way to do so, I'll measure mine.

I read the same thing about the 1.250 COL and all my handloads are loaded to that length. I do have some factory loads I'll try this coming weekend. I'll post back here if I have any feeding issues with them.

The Dawson Precision rep is the one who told me about the 10mm specific mags. The SKU on the 40/10mm mag I first bought is 519-1087. You should be able to find that on Dawson's website. Did you ask STI about the difference in the feed lips between the two mags? I saw a YouTube video where it showed them making magazines in-house and they should be able to confirm the difference between the 10mm and 40 S&W. I can see when I compare them side by side, the 40 S&W feed lips are slightly longer than the 10mm.

I'm gonna contact STI again to ask about the recoil spring weight. Surely somebody at STI knows the actual spring weight of their pistols. That's just crazy. We'll see what they have to say.
 
#25 ·
He only confirmed that they now make a "10" mag & that they are working on having another company produce them. He said if Dawson ordered them for me it would take 60-90 days. No idea how to determine our spring weights. If they are Wolf's you can count the coils & call them. I have 1,000 rounds between 1.255-1.260. LOL guess I may have to seat them once more. My guess is that it will be real hard on the fingers to compress a 26# spring. Mine will be delivered tomorrow. Let me know what you find.
 
#26 ·
My magazines did take a few months to get to me. I assume because they were special ordered. Dawson Precision did tell me some pistols will run with the 40/10mm version so I guess it's up to you. Try the 40/10mm version they have in stock to see if they work or special order the 10mm version. I just left a voicemail for STI. When they call me back, I'll get more info on the recoil and hammer springs. So far, we have several possible spring weights. 18 pounds, 26 pounds and another guy on a different forum with the name STI REP who appears to be an STI employee says it is a 5 inch 20 pound Wolff spring. Maybe STI has tried different spring weights?
 
#28 · (Edited)
sep: range report on my Perfect 10: I had four different loads. Two factory and two of mine reloads:

Armscor 180gr FMJ COAL 1.248-1.253
Sig Sauer 180gr FMJ COAL 1.244-1.255
Blue Dot 10.5gr PD 180gr FMJ COAL 1.245-1.250
Longshot 9.1gr PD 180gr COAL 1.245-1.250

Started with Armscor and had several failure to feed while firing. Switched to Sig and had more failure to feed firing and also dropping the slide on a loaded mag. Hmmm

Switched to Blue Dot and 100% perfect. Went back to the two factory loads with same results. Finished with the Longshot and also 100%!

STI told me the mags are designed for a max COAL of 1.250. I'm thinking this was the issue. The Sig loads should be the same FPS as mine while the Armscor is about 100 FPS lower.

On another note: I'm doubting that we have 26# recoil springs. It felt more like the 18 or 20# in another gun that I have when reinstalling.

Do you have a picture of the 40/10 mag next to your 10mm mag? Not sure if I should try the 40/10. Maybe that's what I have with the pistol.
 
#29 ·
Hmmm, I'll try some Armscor and HPR this weekend and let you know how they run. Here are some mag pics. First pic 40/10mm on left, original 10mm mag that came with the pistol on right. Second pic same orientation. Third pic shows the original packaging for the 40/10mm mag. The white sticker says 40/10mm.
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STI still hasn't returned my call. I called three more times and couldn't get anyone to answer the phone. I just measured my recoil spring and its 6 1/4 inches long. I know I didn't stretch it. Maybe the previous owner swapped out the original spring? Apparently, these are versatile pistols. According to David Cupp, they use an 18 pound spring, according to STI REP on the 1911 forum they use a 5 inch 20 pound spring and according to Brandon they use a 26 pound spring. You posted two guys at STI said they use a spring for a 5 inch pistol. That's versatility! ;-)
 
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