brands of ammo that won't "set in" or "set back"

One time is normally ok. some do on two or three chamberings and others never seem to do regardless of how many times. Rotate rounds and keep up with chambered ones. You never know when it'll happen. It's a crap shoot.

I think the better question might be which firearms don't set back bullets as much. Certain designs (LCP,SCCY CPX2, etc) tend to set bullets back with more regularity than other designs (Glock, M&P, XD, etc) so maybe investigate that.

However, in my experience, Hornady Critical Defense and Duty don't set back even under repeated and chamberings as much as other brands/bullets.

That being said, like the previous poster said, repeated chambering, to that degree is hard on primers. Maybe consider a revolver where there's not so much force on the casings/bullets? Then you can unload a million times with no worries.

Many ammo companies use asphalt instead of a taper crimp to prevent bullet setback. Once the seal is broken, the bullet will move. I doubt any ammo can be repeatedly chambered without the bullet moving.

None, they will all do it given enough cycles.

What they said. All ammo will do this. Some firearms cause it less than others.

If your circumstances do not allow you to secure a loaded handgun and you must unload daily, your only option is to keep an eye on your ammo and develop a routine to make sure out of spec rounds are removed promptly from carry or duty rotation.

Maybe you'd like to crimp your own ammo.

D&L Sports http://www.dlsports.com/pistol-ammo-more-durable.html

I'd start with the list of approved/tested ammo known to be good in the Boberg pistols --it's the same exact issue, stemming from shoddy/cheap ammo production practices.

TCB

Any & all 9mm handgun ammunition is subject to the same risk of setback with repeated chambering.
Sometimes sooner, sometimes later.

If you won't change your practice, then you won't change your risk level.
That's entirely in your head & until or unless you can make some cranial adjustments, or rotate your "Chamber Round" regularly, you carry that risk every day you continue the practice.

If you're not willing to face the issue, no reason for us to bother trying to advise you any further.
Denis

DPris wrote,
Any & all 9mm handgun ammunition is subject to the same risk of setback with repeated chambering.
Sometimes sooner, sometimes later.

If you won't change your practice, then you won't change your risk level.
That's entirely in your head & until or unless you can make some cranial adjustments, or rotate your "Chamber Round" regularly, you carry that risk every day you continue the practice.

If you're not willing to face the issue, no reason for us to bother trying to advise you any further.
Denis

Click to expand...

Let's face it, we're all thinking this, DPris just had the good sense to say it.

Best way is to change your practices. The danger presented by heightened pressures due to bullet setback is higher than your perceived danger of keeping a round chambered at home.

Smartest way is to leave it chambered.

Aside from that either get used to dropping the mag and inserting the round directly into the chamber every time (which bypasses the feed ramp entirely and should solve your issue) or buy a revolver.

Yeah, lets just apply a bandaid to a user induced fault. That always works.

Get a safe instead.

FWIW, Federal 115 +P+ 9BPLE 9mm ammo has that "ledge" referred to in post 7.

It's one of the factory loads that I use regularly.

M

My 1911 will cause setback real fast for Speer Gold Dots. My Glock 41 & 30S, not so much. I use my carry guns for competition, and I'm also a chronic chamber checker. So my ammo gets chambered a lot.

I just wanted to clarify thag sometimes it's more the gun than the ammo brand.

My carry ammo is free, so I just bag the setback rounds and trade them out at the range when I'm there.

I didn't pay much attention to setback until I started reloading. Once I realized how setback affects chamber pressure, I started watching closely. Now I can spot setback by eye before it exceeds 0.010".

I think the option to put the round into the chamber directly may be hard on the extractor in some designs (Glock comes to mine). If done enough, that will likely break it.

Bullet set back sooner or later will cause overpressure and damage the firearm. 9mm is a pretty high pressure round to begin, hot ammo smashed is a recipe for a blown pistol.

I wouldn't worry about the rounds you inspect and can see, I would worry about the round which is lose now and that you just chambered.

As some others have said, this is a recipe for bad if you do it enough times (if you ever need the pistol).

Get a revolver.

I won't try and dissuade you from your practices, but perhaps using a handgun safe or lockbox will provide you with an alternate procedure. I cant say which box/safe is best and that's probably better in a separate thread. Here's a link to an old one i found in a search.

http://www.thehighroad.org/showthread.php?t=159032&highlight=best+handgun+safe+OR+lockbox

Get another 2 clips . When ejecting the round , pop into a spare mag . When 1/2 full , refill
with good ones / unused . When all 3 mags have rotated - time to go to range .

I try not to chamber the same round more than 2 times if at all possible.

When I notice that my pocket carry gun is fuzzed up and needs a bit of a cleaning, I drop the mag, eject the round, and clean it. Before I chamber a round, I'll thumb out a few in the magazine and put the previously chambered round down a couple of spots.

I usually get out to shoot once every month or two, and I belt carry most of the times, so pocket dustbunnies aren't that big of a treat, so I usually don't have to chamber the same round more than once before I shoot it.

Ammo is not made to be chambered over and over , they will set back under
your conditions, and could fail

Look at the Hornaday Critical defense ammo. It has a crimp band (hatch pattern IIRC) at the base of the bullet. It is my guess - based on nothing but wild supposition - that this is to help reduce the likelihood of setback from repeated chambering. I mark the top rounds (permanent marker to color the primer) and after several re-chamberings, shoot them. I still check their lengths to verify no setback before shooting them.

As mentioned above, one chambering only is the best practice and repeated chambering is done at your own risk. But my observation of the Hornaday rounds is that they have not experienced setback with multiple chambering.

My thoughts:

1) The risk attributed to this on the internet is vastly overrated. A little bullet setback is not going to blow up your gun. If it did, police would be blowing up guns every day. Reloaders that set their own OAL based on random bullets and their random chamber would be blowing up guns every day.
2) Any and all ammo is susceptible.
3) Factory ammo that puts some glue around the bullet might be less susceptible. Neck tension from case sizing holds the bullet in place. Crimp is irrelevant.
4) If you must load and unload every day, I'd just pick a random time to discard the chambered round (put it into the practice bin). Once a week sounds good to me. Every Monday morning, your chambered round goes in the practice pile.
5) You could get a caliper and measure new ammo, compare to a round you know has been chambered X number of times. This info might or might not be useful to you if you want to create your own procedure.

i chamber a round before i go out everyday. unchamber when i get home. i will not change this, don't bother.

Click to expand...

The safest solution then is to chamber a fresh round every day.

This means every 25 or 50 days you will need to buy a new box of ammunition and shoot up the previously used box of ammunition.

Actually this is a pretty good idea as it keeps you in practice with your carry ammo.

Doesn't exist. I leave my carry gun loaded all the time to avoid setback. May not work for you though.

Critical defense does seem especially prone though.

What about that IMI (147gr 9mm) ammunition that has a "step" inside the case? If the bullet seats against that step, should the bullet setback the round will then be too "fat" to chamber. I assume that is the reason the cases were made that way.