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Question about ammo for a P365 with a 3.1 inch barrel

9.8K views 48 replies 35 participants last post by  trainkeptarolling  
#1 ·
I was reading a few different articles this morning and some of them have recommended using 147gr jhp in the shorter length barrels. I have been running Hornaday Critical Defense 115gr. because that's what I had the most of, with no issues, but curious for those with the original sized 365s or other 3in barrels, is anyone using 147gr, if so, how do you like it? Does it perform well?
 
#4 ·
If you’re going to have a problem with any 9mm, any make and any model, it will be with the 147gr offering. It’s the maximum length for a factory 9mm loading. They have great performance but just make sure you shoot enough of them to make sure they are reliable. The 124s are just as good but with a little margin for error for feeding function. I’ve always carried the opinion reliability trumps that little bump in performance.
not trying to make it muddy but if that’s what you want then you have to make sure that they work all the time. Which currently could be difficult to find and expensive.
 
#5 ·
If you’re going to have a problem with any 9mm, any make and any model, it will be with the 147gr offering. It’s the maximum length for a factory 9mm loading. They have great performance but just make sure you shoot enough of them to make sure they are reliable. The 124s are just as good but with a little margin for error for feeding function. I’ve always carried the opinion reliability trumps that little bump in performance.
not trying to make it muddy but if that’s what you want then you have to make sure that they work all the time. Which currently could be difficult to find and expensive.
One of the most pleasant to shoot rounds in my P365 was 158 gr. Shot a few hundred of those without an issue.
 
#18 ·
3.1" is a bit of a non-starter for me.

Self defense/duty bullet designs are optimized for velocities from 4" + barrels.

If I had to use a 3.1" barrel, I would recommends 124 +P to minimize lost velocity though you are still making a sacrifice.
 
#19 ·
For me (after a few 1,000 rounds downrange) I have decided 124 shoots better and I'm more accurate with it.
I've replaced all my SD ammo with 124 JHP and will be doing the same with my range stash as it gets 'used up'.

Highly suggest you buy at least a few boxes of each weight & decide what feels/works/is most accurate for you !!
 
#20 ·
For me (after a few 1,000 rounds downrange) I have decided 124 shoots better and I'm more accurate with it.
I've replaced all my SD ammo with 124 JHP and will be doing the same with my range stash as it gets 'used up'.

Highly suggest you buy at least a few boxes of each weight & decide what feels/works/is most accurate for you !!
I plan on it, I will never carry a firearm or ammo without using it first, but just wanted to have an idea of it was even worth purchasing. It looks like it might be though. I’ll go buy a few boxes and give them a go. Thanks.
 
#22 ·
I've shot 115 and 124 grain ammo in my new P365XL Spectre Comp which , as you know , has a 3.1 inch barrel to work with the slide compensator. Both worked well. Haven't tried the 147 grain yet but plan on doing so.

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#25 · (Edited)
Not a P365 but all I carry in my Shield before I gave it to my dad was 147gr HST.

Shot about 75 rounds of it through my new Shield Plus today and it worked just fine. It will be my carry ammo as long as I continue to have no issues with it. Both Shields had 3.1" barrels.

If you haven't already, check out the Shooting the Bull 9mm short barrel testing videos. During the online series he tried many types of 9mm ammo in the tests. It helped me make my decision of what to carry in my gun. Although my choice wasn't the absolute best it is pretty darn good. And I find 50 round boxes for $34 online at different stores.

 
#26 ·
I saw this website a few years ago and the 9mm ammo tests were done using a S&W Shield which has a 3.1" barrel like the P365. Based on the posted results, I'd be fine with carrying Federal LE Tactical HST 147gr ammo which works without issues in my P365 and P365XL. Fortunately, I have quite a bit of Speer Gold Dot 124gr + P ammo leftover from my prior job that is used as my primary carry ammo currently. If I didn't have so much 124gr + P ammo on-hand I'd be using 147gr extensively as it shoots softer overall in my P365s.

 
#33 ·
I use Sig 365 ammo in mine.
365, FMJ, 115gr @ 1050 fps for my regular shooting
365, JHP, 115grm 1050 fps for carry

After testing all the carry ammo that the LGS/range carried, I found that I like the Sig ammo the best.
I did not like any, carry and regular, in 124gr, 13xgr, 147gr, 150gr, 165gr.
I did like the Federal IRT (leadless) 70 grain ammo and the Fort Smith solid brass, carry ammo.
HTH
 
#35 ·
I’ve probably shot most of the “defensive” loads through my 365,and 365XL, and as far as function goes, MINE have eaten anything and everything.
That said as someone who has hunted with a bunch of different handgun calibers, I consider them ALL rather anemic and shot placement is extremely important, so I run whatever load I find is most accurate in every gun I own. I’ve yet to shoot a gun from a solid rest that didn’t show what it likes and dislikes. When I find the “holy grail” load, I try to find as much as possible of the same lot number. All lots aren’t created equal.
Shoot safe!
 
#37 · (Edited)
I’ve probably shot most of the “defensive” loads through my 365,and 365XL, and as far as function goes, MINE have eaten anything and everything.
That said as someone who has hunted with a bunch of different handgun calibers, I consider them ALL rather anemic and shot placement is extremely important, so I run whatever load I find is most accurate in every gun I own. I’ve yet to shoot a gun from a solid rest that didn’t show what it likes and dislikes. When I find the “holy grail” load, I try to find as much as possible of the same lot number. All lots aren’t created equal.
Shoot safe!
I've read that as many as 80% of people shot with a handgun survive. Shot placement is key.
 
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