• Winner! Quick Shot Challenge: What’s the dumbest shooting myth you’ve heard?

    View thread

Filter

PortaJohn

this guy amongst others like Carson,Thomas,Powell are what keep me from being a foaming at the mouth racist. we do see more coming around on line and i have known several that don't deserve what most of need-namely 5.56x45. that is going to be the real tragedy of the likely coming race war. the WHITE politicians that we see quoted on here all the time will be the instigators. they are unlikely to suffer the results. i can hope that they do,however.
  • Like
Reactions: MWAlex2

3D printed powder cup weight gain while curing?

Another comment... If you have a concern with the kinds of small changes in weight we are discussing here, i.e., the kind that come from water content changes in (or on) polymers...

To avoid being confused by the potential for the auto-null to induce changes, track the total weight of the cup rather than zeroing the scale on it. That way, the potential auto-null issue isn't part of the measurement.

In other words, get a stable zero and then weigh the cup and record the weight, don't tare on the cup weight and tack the null changes since the auto-null could be playing with you.

In physics labs, we use $very$ good scales to track things down below a milligram, and while these A&D FX120i scales are great for the money, they are not the equivalent of a laboratory scale used for tracking small differences of big values.

That said, it doesn't mean your observations are not potentially real. Many common polymers do change with humidity.

Hopefully, your polymer cups don't change so fast that they ruin your work. As long as you occasionally watch the tare weight of the cup and the zero, you should be able to keep loading. Pick some interval during long loading sessions and force yourself to watch the tare weight of the cup. As long as you are careful to keep the zero, you should be able to keep your powder charges under control.

Nylons and similar polymers are notorious for absorbing and giving off water. Other polymers don't. It all depends on the chemistry and form of the polymer. Nylon, ABS, acrylic, PET, PBT, polyurethane, and polycarbonate, will all vary enough with humidity for you to notice.

The only polymer with zero water absorption is PTFE, but it can bring a severe static problem. Plastics with very low water absorption are polymers such as PEEK, PPS, PSU, PPSU, PEI, PVDF, PET, PP, and PE. All of these have their pros and cons. YMMV
That’s kinda’ what I’ve been doing all along with my aluminum 419 cup with the weight written on it. It’s an easy way to see that the scale is still zeroed during a session.

IMG_9826.jpeg


This all went out the window when I started trying printed polymer cups because of the powder bounce I was experiencing with the new style IP trickler mount.

IMG_9842.jpeg


Finally got my IP cup today. Calibrated the scale and weighed it. I’ll post my findings in a few days and see if the weight changes.

IMG_9846.jpeg


IMG_9844.jpeg
  • Like
Reactions: RegionRat

Pope Death Watch... WITH A PRIZE!!! Quart of Maple Syrup to the winner!

Ok a last Remark .. God is a Spirit? God is HOLY So that makes God and the Spirit the Same...1 body 1 spirit
Interesting that you would call that a remark and not be quoting scripture. Yet that conclusion you have made and the statement “one body one spirit” has been all throughout your reasoning and has been the rationale for many of your conclusions. Here you are admitting that part of your position is based on something that is not from scripture. When we seek truth we have to realize the difference between what scripture says and what presuppositions we are bringing to the scriptures.

Ebay scam

I have yet to actually get burned. Knock on wood. I used to buy and sell quite a bit on here. It was pretty safe back in the day. Once it became the cool place to be it started attracking more rats.

I had an experince with burris CS in about 2008 over a broken xtr they had for a year. I think I ripped every CS rep in the place a new one. Then scopes start showing up. Not 1, not 2, not 3, but a total of 4 scopes show up over about a 3 week period. 3 of the 3-12s and one of the 4-16 like I sent in. Reticle broke off it in 2 shots. 🥺🤣 I kept returning the 3-12s to sender and they kept showing back up. 🤣🤣

PortaJohn

note sure if i posted this before, but i like looking at her. :p

Login to view embedded media
i hope this chick can afford and has competent bodyguards. she has been laying out the truth too often,too long to be safe anywhere in Europe. well,maybe OK in Hungary,but...i think the danger from the savages is obvious. i wouldn't rule out a CIA,FBI style gov hit.

Dialing wind Question

Shooting 1 mile at a 1 MOA target and not on the clock, I'm considering dialing windage as opposed to holding. I usually hold but given the size of the target, I thought dialing might be more accurate. Would appreciate comments.

Yeah you could dial your initial but at a mile the wind changes a lot in a short time. You will need to hold any correction as if you took time to dial it may have changed.

Example, I was shooting my 7mmRM with 180 ELDs at a mile on a 12” target at Coleman’s Creek and holding just over 4 mils of wind and got the hit at about 10 o’clock off center. I racked the bolt and held the same and took another shot and it dropped about an inch off the plate at 3 o’clock so I adjusted the hold and took another shot and hit it again at about 8 o’clock off center. A little wind at that range moves the bullet a good amount when shooting little targets.
  • Like
Reactions: Paul1262