Anyone here into firearms?

Gerg

Yeah. Those are great. I'm not a huge fan of 10mm myself... I just don't think the MP5 looks right with the 10mm's straight mags. (Plus, I don't have much use for that particular round, but it does have great ballistics.)

If you don't mind the wait time, Dakota Tactical makes one of the best MP5s in the world, second only to the original... but not by much.

I used to have one of their standard MP5s. Beautiful piece.

Rusty

My buddy, who works for DHS. Has shot the MP5-10. He loves it. That's how I found out about it.

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BoneZ

General question... Concerning defensive carry ammo, how often do y'all buy fresh rounds?

Tigger

I shoot the carry mag load every 3 months or so and cycle in new ammo.

That also serves to test it in your firearm and you can feel confident that it is going to shoot that ammo reliably. Never a bad idea when your life is on the line.

SouthArk370Z

The shelf life of most ammo is measured in decades. I don't carry, so moisture may be a bigger problem than I think it is, but going by decades of plinking with handguns and rifles, decent quality ammo doesn't go bad unless it gets wet (degrades the propellant and corrodes the brass and lead). If the brass and lead look good, the ammo should be good. YMMV

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Rusty

Put finger nail polish around the primer and case mouth to help preserve the round. I do this with my hunting rounds if I know the weather will be bad.

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Rusty

To past my time while I heal up from foot surgery. I started to read a book called "Applied Ballistics For Long Range Shooting" by Bryan Litz. It's deep in tech. A lot of science.

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Tigger

Totally agree in terms of shelf life. As in, sitting on a shelf. In regards to carry ammo, specifically, you do need to cycle it through and keep it fresh. Problem comes in when you constantly carry. Powder essentially breaks up into smaller pieces from the constant motion. It will change the ballistics of the round and increase chamber pressure exponentially as the powder will burn at a much higher rate.

You also run the risk of partially burnt powder and may get a bullet lodged in the bore. These are all fairly unlikely scenarios but they must be considered as it has previously occurred.

I suppose you really only have to worry about this if the case isn't completely filled and there is room for the powder to move. So it would vary from load to load. I imagine most P+P rounds would never have this issue. Any standard, non-+P round will likely steer toward the need to cycle. But I'm OCD. I only stated what I do with my ammo. You could easily go several years with the same carry ammo. But for myself? Eh, life is more important than an extra $50 for a new box of ammo.

BoneZ

Anyone ever use this aluminum case ammo?

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Rusty

Looks like the old CCI Blazer rounds. Which I used to use in my MAC10 45ACP. Haven't seen them around for awhile. You can't reload it because the case has 2 flash holes for the primer. It's a Berdan primer.

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SouthArk370Z

I shot a hundred rounds of 9mm through a Walther P4 with no problems. Don't remember which brand they were.

As per Rusty, they can't be reloaded.

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Spstone

What gets to be more of a problem then round rotation is actual magazine maintenance. Mags need to be cleaned and oiled just like the rest of the fire arm and springs allowed to relax. Rotating ammo normally reminds people to do this.

VABAM

Magazine maintenance mostly depends on the mag itself. Some mags need to be cleaned and lubed regularly some don't. Also some mag's springs don't need to be relaxed on a regular basis either.

My Pmags and Lancer AR-15 mags don't need to be lubed and unless they get really dirty, like if I dropped one in mud or sand, don't really need to be cleaned. If they do get really dirty I just take them apart and wipe them down with a clean dry rag with out any solvent or oil. My HK pistol mags (with one exception) are the same way.

Like cleaning and lubing, mags spring maintenance varies depending on the mag. Some mags need to be exercised, unloaded, and/or rotated and some mags don't. This varies a lot even with the same gun. Depending on the manufacture some AR-15 mags need to unloaded and rotated while other don't. I usually rotate my AR-15 mags just because.

Now my HK USP 45 10 round brady bill mags (that one exception) springs can only stay loaded a month or two before encountering slide lock back issues. Also they need regular cleaning and light lubing to ensure the slide locks back on the last round. When the brady bill ended and I was able to get the 12 round USP 45 mags all those issue went away. I can run those mags dirty and leave them loaded for very long periods of time. One time I was out of country for over a year and had accidentally left some of my UPS 45 12 round mags and HK45 mags fully loaded. When I got back and realized that had happened I thought I had messed up my mags. I didn't unload them instead I took them to the range still fully loaded and tested them. To my surprise they all worked flawlessly and I have never had an issue with them.

It really boils down to you knowing what your firearm needs and doesn't need when it comes to cleaning and maintenance.

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VABAM

Speaking of mags, Nuntfancy recently posted a vid on AR-15 mag reliability.
No ground breaking info but I still found it interesting.

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urdeliveryguy

Did some modifying to the 870. New magpul furniture and a low profile mag clamp with a rail for my tac light (tlr-1 hl).

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