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Discussion Starter · #1 · (Edited)
<finally done, sorry for the multi-day first message post>

First, who am I? I am a 53 year old FFL/SOT and enjoyer of all things firearms, but most specifically, various Sig Sauer products. I was diagnosed with Stage 4 Prostate Cancer back in 2018 and probably have 1-2 years left before it finally takes me out. Because of the treatment, I don't get to spend as much time at the range as I used to. (I used to spend 4-8h a week at the range, now it's more like 4-8h a month if I'm lucky.) I've lost a lot of strength and stamina, but can still shoot pretty darn well (if I do say so myself, breaking my arm, patting myself on the back).

Second, my opinion is worth just about the electrons that it takes to make this text appear. Which is to say, as much as any other enthusiast, but no more than anyone else's opinion that's for sure.

On with my thoughts:

I, overall, have really really really enjoyed shooting this gun. It has had some frustrations as I'll mention below and in the reply to this post, but it is a fun gun to shoot. It feels great in the hand. (And I have these weird mitts, big NFL sized palms with shorter, stubbier fingers, so if you measured my hand, it's like an average NFL player sized hand, but mostly because of my palm.) Anyway, fits great in my hand. The trigger shoe, like all Sig trigger shoes, (for me) leaves a bit to be desired. Just has some edge to it that I do not like. (Every single Sig I own has gotten a GrayGuns flat trigger and this one will be no different - NOTE: I just heard back on Instagram from GG and they said that the triggers work fine in the XTEN, so I ordered one today and will install it next week).

Upon receiving the gun a few months ago I installed the Romeo2 (full mailbox config) and an X300U. I find the Romeo2 to be an excellent optic. I'll write a separate post on that later because I now have that on both this firearm and my P320 AXG Scorpion. As noted in the reply to this post I ran into failures to chamber the next round.

Each time it was roughly the same, only thing different was the angle of the cartridge (and how stuck it was). No matter what, once a cartridge was stuck, I could not get it to run through again, no matter where I hid it in the magazine, or what other rounds I put around it. For my "testing" I shot Dutch loads (where the cartridges changes every 1 or 2 cartridges) and full mags of the same cartridge. That did not seem to matter. Obviously, from the data below, the Federal Syntech just simply is not reliable in my firearm. I can't speak for anyone else's firearm.

When it fails to load a new cartridge it IS stripped from the magazine, but it does NOT chamber properly, it's angled up (I really wish I could draw) at a not too severe angle. Each time, EXCEPT for the Fiocchi JHP it left a mark on the nose of the bullet (see next post).

Clearly this firearm likes certain types of ammo and does not like other types. I'd be curious to hear about other people's experience with various types of ammo.

When a new cartridge fails to chamber, this is what it looks like in my gun. The angle of the cartridge varies, but that round is ALWAYS dead and can never be loaded again:
Air gun Trigger Shotgun Gun barrel Material property


You can see the condition of the mags (as best as my camera photos will allow) after 1000+ rounds:
Purple Gadget Material property Electric blue Rectangle

and the other side:
Azure Purple Rectangle Material property Gadget
 

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Discussion Starter · #2 · (Edited)
I have now shot 1022 rounds through my XTEN.

I have shot the following brands of ammunition:
  • Federal Syntech Range 205gr (about 400 rnds - I had over 24 failures to load a new round, see photo at end)
  • Fiocchi JHP 180gr (about 50 rnds - I had 3 failures to load a new road, not visible damage to round, but that round would NOT load again)
  • Hornady Critical Duty Flexlock 175gr (about 60 rnds - no failures to load)
  • Magtech FMJ 180gr (about 100 rnds - no failures to load)
  • Sellier & Bellot FMJ 180gr (about 150 rnds - I had 1 failure to load, see photo below)
  • Sig Sauer FMJ 180gr (about 100 rnds - no failures to load)
  • Sig Sauer V-Crown 180gr (about 60 rnds - I had one failure to load a new round, this was within the first 50 rounds I shot, no visible damage to cartridge)
  • Sig Sauer V-Crown 200gr (about 20 rnds - no failures to load)
  • Underwood Hard Cast Flat Nose 220gr (about 60 rnds - I had one failure to load, looked similar to the Federal Syntech round)
The best overall round for me to shoot through the firearm was the Sig Sauer FMJ 180gr ball ammo. The second best was the Sig Sauer V-Crown 180gr. Tied for third was the Hornady Critical Duty 175gr Flexlock, the Underwood Hard Cast 220gr and the Sig V-Crown 200gr. I did not find the Magtech 180gr ammo pleasant to shoot at all, felt overloaded (+P) but in a not comfortable way.

I still have about 1000 rounds of non-Sig Sauer ammo that I will continue to shoot through the firearm, but I'm honing in on the Sig 180gr FMJ as the practice ammo and the Sig 180gr V-Crown at the carry ammo with the Underwood Hard Cast 220gr as the hiking/big critter defense ammo.

Federal Syntech Round:
Gesture Finger Thumb Nail Magenta

Sellior & Bellot Round:
Finger Wedding ring Thumb Household hardware Gas


Sampling of Ammo Shot:
Font Publication Rectangle Electric blue Signage
 

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Thank you for the write up. Best wishes going forward!

Question: When you say that a round "would not load again" what was it exactly that kept the round from loading on the subsequent attempt?
 

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Wolf,
I'm sorry you're suffering with terminal cancer- I hope to God you get more time than 1-2 and I hope it's QUALITY of life.

Great write up on your X10... The five best ammo loads you mentioned cover all possible needs- Practice loads, Defensive expanding rounds, and 220gr hardcast for defense against Polar, Kodiak, and Grizzly bear. That's a very wide spectrum of application!

Five inch barrel, right? So it seems to fall between the Glock G20 and G40 in that regard, which seems to be a sweet spot.

If you're into chrono'ing, I'd love to know what those five best loads are flying at.

Any thoughts on testing out some Buffalo Bore 200-220gr HCFN? I'd be curious.


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Yeah, those mags don't have the Mec-Gar anti-friction coating (AFC) like I initially thought they had. Looks almost like a painted-on finish.
My mags don't want to feed the rounds up to give the slide a chance to strip them and chamber them. Hoping to get some replacements soon.
When a round does chamber and fire, it does a sweet job of absorbing the recoil.
 

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Thank you for the update on the P320 XTen. I've been hoping to read a post like this that gave a good review. And you used many different types of ammo with only a couple hiccups in a thousand rounds. Sounds about right even with other calibers of 320's. I've been holding off on this pistol and deciding whether I want a P220 10mm or this XTen. Have you shot a P220 10mm? Do you have an opinion on that. Thanks again for sharing your thoughts!
 

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I agree, the XTEN is very fun to shoot!
Those mags look OK to me after 1k+ rounds; am I missing something?

LOL!
:D
my opinion is worth just about the electrons that it takes to make this text appear. Which is to say, as much as any other enthusiast, but no more than anyone else's opinion that's for sure.
 

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Thank you for the update on the P320 XTen. I've been hoping to read a post like this that gave a good review. And you used many different types of ammo with only a couple hiccups in a thousand rounds. Sounds about right even with other calibers of 320's. I've been holding off on this pistol and deciding whether I want a P220 10mm or this XTen. Have you shot a P220 10mm? Do you have an opinion on that. Thanks again for sharing your thoughts!
I'm not as impressed as you are.
30 failures in 1000 rounds is at least 25 too many as far as I am concerned. YMMV.
I'll cut the gun some slack given that it's the first 1000 rounds.
However if it continues to have issues at that rate I'll have to pass until it's a little more ready for prime time.
 

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Discussion Starter · #10 ·
Question: When you say that a round "would not load again" what was it exactly that kept the round from loading on the subsequent attempt?
Once a load had the "damaged" nose, no matter where it was gashed or scratched, no matter how badly, it would never load into the chamber cleanly again. No matter how I tried to hide it (as the first in a mag, buried in a mag, surrounded by the same cartridge, surrounded by different cartridges it would fail to chamber properly.
 
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Discussion Starter · #11 ·
If you're into chrono'ing, I'd love to know what those five best loads are flying at.

Any thoughts on testing out some Buffalo Bore 200-220gr HCFN? I'd be curious.
I don't have chrono equipment, but I'll ask around.

I'll see if any of the wholesalers have Buffalo Bore in stock and get an order in.
 
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Discussion Starter · #14 ·
Thank you for the update on the P320 XTen. I've been hoping to read a post like this that gave a good review. And you used many different types of ammo with only a couple hiccups in a thousand rounds. Sounds about right even with other calibers of 320's. I've been holding off on this pistol and deciding whether I want a P220 10mm or this XTen. Have you shot a P220 10mm? Do you have an opinion on that. Thanks again for sharing your thoughts!
I have shot the P220 (in 10mm, the "Hunting" one). This gun is lighter, but the perceived recoil mitigation is very good and double the number of rounds seals the deal for me.
 

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Discussion Starter · #15 ·
I agree, the XTEN is very fun to shoot!
Those mags look OK to me after 1k+ rounds; am I missing something?
No, you aren't missing something. Someone else has a thread about mags not working, so I decided to take pics just to see if anyone saw anything in the mags. For my mags, it appears to be normal wear and tear.
 
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Discussion Starter · #17 ·
I'm not as impressed as you are.
30 failures in 1000 rounds is at least 25 too many as far as I am concerned. YMMV.
I'll cut the gun some slack given that it's the first 1000 rounds.
However if it continues to have issues at that rate I'll have to pass until it's a little more ready for prime time.
24+ of those are coming from Federal Syntech. My firearm just does NOT like that ammo. Unfortunately for me, I bought 500 rounds of it, so I'll continue shooting it at the range to continue breaking in the gun. If you remove that cartridge, you have 5 failures in 600 rounds. Two of them pretty early. Once I blow through the rest of this ammo that I bought for testing and focus in on the selected ammo, we'll see where I stand with my firearm.
 
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24+ of those are coming from Federal Syntech. My firearm just does NOT like that ammo. Unfortunately for me, I bought 500 rounds of it, so I'll continue shooting it at the range to continue breaking in the gun. If you remove that cartridge, you have 5 failures in 600 rounds. Two of them pretty early. Once I blow through the rest of this ammo that I bought for testing and focus in on the selected ammo, we'll see where I stand with my firearm.
That's true. And there is a decent chance this gun is just taking longer than usual to work itself in.

Best of luck!
 

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Discussion Starter · #19 ·
I went back to the range to see if I could get better photos of the failure to properly load a new cartridge. I could not. I shot 260 rounds today across various brands without a failure:
  • 30 rnds (Sig Sauer FMJ 180gr)
  • 20 rnds (Underwood HCFN 220gr)
  • 20 rnds (Hornady Critical Duty FlexLock 175gr)
  • 50 rnds (Fiocchi JHP 180gr)
  • 100 rnds (Federal Syntech 205gr)
  • 20 rnds (Sig Sauer V-Crown 200gr)
  • 20 rnds (Various, Ammo Inc, Sellier & Bellot, Magtech)
Go figure, one failure to hold open on empty magazine (but I believe that that was my fault).
 

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I went back to the range to see if I could get better photos of the failure to properly load a new cartridge. I could not. I shot 260 rounds today across various brands without a failure:
  • 30 rnds (Sig Sauer FMJ 180gr)
  • 20 rnds (Underwood HCFN 220gr)
  • 20 rnds (Hornady Critical Duty FlexLock 175gr)
  • 50 rnds (Fiocchi JHP 180gr)
  • 100 rnds (Federal Syntech 205gr)
  • 20 rnds (Sig Sauer V-Crown 200gr)
  • 20 rnds (Various, Ammo Inc, Sellier & Bellot, Magtech)
Go figure, one failure to hold open on empty magazine (but I believe that that was my fault).
Sounds like things are looking up. Even the Fed Syntech. Excellent.
 
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