I’m really enjoying a pair of father/son PSA rifles I built with CHF FN uppers. Man, they are tack-drivers.
However, my brass is being thrown to the one o’clock or two o’'clock, instead of the three o’clock or “later” position.
Now, I’m not a guy who’s anal about where his brass is thrown, but I don’t have any other ARs that throw brass so far forward.
I’m guessing it’s undergassed.
Am I correct, and if so, is there anything I can do about it?
I personally wouldn’t worry about it…but you can change to a heavier buffer or spring.
If it’s ejecting forward, It’s likely overgassed, under sprung, or the buffer is too light to sow it down.
Overgassed isn’t necessarily a bad thing - it allows you to run cheaper, “cooler” ammo and is (in my opinion) better than being undergassed.
Problem is if it’s too overgassed, you may have brass going too close to direct forward ejection and some empty shells may bounce back in the chamber once in a while if you happen to run some hotter ammo. Or, it could just cause a bunch of unnecessary wear and tear on the gun.
If you really want to slow it down, I’d suggest a heavier buffer. This will also lessen the perceived recoil impulse. Move up to an H1 or an H2 buffer, give that a try before you try an adjustable gas block.
I like that diagram
The easiest fix to remedy this little issue, is to get yourself a heavier buffer. I only buy/use the KAK AR-15 Configurable Buffer Kit for $45 bucks. I know that’s pricey for a buffer, but it allows me to customize my buffer weight from 1.7oz super light to 5.6oz super heavy. Hope this helps buddy
That’s a real interesting graphic, and thanks for the detailed explanation. Will try an H2 buffer.
Not a fan of that graphic. There is no “issue” unless the rifle is not reliable. The ejection pattern depends on ammunition, ejector spring strength, extractor shape and extractor spring, action spring, and buffer weight as much as gas port diameter.
If the rifle is reliable, I would not worry about ejection direction. A heavier buffer will probably make the apparent recoil softer. If you are using a standard carbine buffer, I would recommend trying an H (H1) buffer.
Andy
Is this chart applicable to 300 AAC and other calibers in AR platforms, or just 5.56?
I had a 6.5 Creedmoor upper that ejected brass WAAAY forward, in front of the firing line.
Plus I am one of the only target shooters that uses the 300 yard targets.
That means, more often than not … everyone is waiting for me when there is a target change.
After making everybody wait an extra 5 or 10 minutes, it would be a little rude to say, “no wait, I need another 5 minutes to pick up my brass”.
The area in front of the firing line is an incline with bushes, it takes time to find brass if it’s ejected forward.
So I sold the upper, and received a Capital Gain.
Do I need to declare that on my Taxes ?
Thanks! Freshly stolen - I mean liberated - from the interwebs.
I don’t agree with the chart 100%, but it is good at diagnosing issues. Kinda like that BMI chart at my doctor’s - lol I don’t need a chart to tell me I should lay off the snacks…
I personally am ok with my brass anywhere between 2 and 4 or so. I just know that the platform will tend to have more issues if my brass is closer to 12 or 6.
Depends on if you are soaking the sponge before hand or applying it dry. Especially on pre-smoked meats.
Ever tried one of those handy brass catchers? I’ve been afraid to - something about thin nylon or poly fishnet catching my hot brass as it ejects just has me afraid of a melted mess strapped to my gun.
It was easier to sell it for a moderate profit.
I am surprised nobody makes a brass catcher using stainless mesh.
