PROPERLY Evaluating priorities

From what I have seen many things matter very little, a few things matter a lot and a number of things can cause the above to change. I have spent more than a half hour learning that but will have to admit I didn’t spend one watching that video.

AJC1 said:

Seems like people focus or thing they are most concerned about is not the elephant in the room. I found his consern for consentricity was proven a moot point. My own thoughts were also changed. I was just positive those with .005 would not stack in the group. The sample size here is honestly small and the range close.

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I enjoy watching his videos as entertainment.
But he spends a lot of time chasing his tail.
If you watched his black hills clone videos. You will notice the groups that faired well at 100 yards died at 200.

I didn’t see groups small enough to even worry about concentricity yet. When they all make only one hole, then maybe “super concentric” ammo can make the single hole smaller.

But I don’t have a concentricity gauge tool for my ammunition at all, so what the heck do I know?
Still like his series though. When one doesn’t know, the best way to, is to find out! He’s got curious in spades!

As a relative newb trying to sort all this out, one of the things that becomes evident to me is the cause and affect of things may not always be what it seems. Case in point.........when doing load development, what most seem to do originally is pick the components......seems all four matter......brass, powder, primer and bullet. Then start with a powder charge (in some calibers, at least a dozen or more powders and dozens of charges each), and once that is settled, alter seating depth. Starting from the lands and moving back. That seems to tune the load well enough for all but the best of them.

But take any one of those components and alter it and something changes. Back to seating to the lands....or just off them. How exactly does that help? There are guns sold with sub MOA guarantees........said guarantee built on requirement that shooter use factory match ammo........and that is not seated to the lands. That is almost certainly seated inside SAMMI specs. So something else is at play.

One reference I found suggest function of seating to the lands gives the round a constant start pressure to work from. Enough resistance beyond simple neck tension to get a uniform powder burn to get a consistent pressure wave. Same reference also suggests that a neck crimp does the same thing, and that (along with higher quality control) is what enables some factory match ammo to be as accurate as it is.

Now back to changing seating depth. That does more than change seating depth. It changes internal case capacity....a bullet seated deeper also changes the % of case fill......which may then alter the burn rate, pressure wave, timing of bullet to pressure wave, etc. Again, a lot of moving parts to keep track of and eliminate cause and affect of each.

Fun stuff.

And lastly comes the issue of how many shooters are good enough to shoot the difference? I'm not. I found that out when I first tried to shoot a tight group with a heavy barreled varmint gun, with 16X tactical scope. Gun and ammo could have been capable of putting 10 shots through the same hole and I would have had at least a 1/2" group. Best I could do was hoover crosshairs over 1/2" dot at 100 yards. Could not get it to stop moving less than that. So for a guy like me, trying to pick the fly crap out of the pepper would be a waste of time and primers!

Good that he tests seating stem contact point, I think it's pretty normal for a re loader to question practices and work through issues.
He will probably be selling his consentricity tool next month on the forum like the rest of us.
J

"So for a guy like me, trying to pick the fly crap out of the pepper would be a waste of time and primers"!

Still laughing. Thanks, for that.

jmorris said:

From what I have seen many things matter very little, a few things matter a lot and a number of things can cause the above to change. I have spent more than a half hour learning that but will have to admit I didn’t spend one watching that video.

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I wrote code. A semi-colon out of place means everything - or nothing - take your pick.

I watch in case I can pick something up, and not seen anything dangerous so if he's having fun and making a little YT money I guess good for him. Perhaps he's just trying to keep viewer interest but I see no real point in a lot of it, just too scattered and random.

eyeshot said:

Still laughing. Thanks, for that.

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+1!

We all dabble in weighing our brass every now and then.

earlthegoat2 said:

We all dabble in weighing our brass every now and then.

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Guilty as charged.

https://www.youtube.com/watch?v=1V_Hm3oqlO4

I'll admit, I've weighed cases, weighed bullets, used a concentricity gauge, used a straight line seater in an arbor press and have shot some tiny one hole groups. But most of those things are wasted for a hunting rifle and maybe even for a varmint rifle.

I like to see Johnny's take on new calibers and some gear. He does take constructive criticism from his viewers pretty well.

One thing I would like to see him get into, and he has the equipment to do it, is some real testing for some of these loads, rather than number picking from a hat. For example, working up a known powder/bullet combination and looking more at how COAL effects performance in an AR, as that is what he tends to shoot the most of. The test for these 75s could have boiled down into a few powders that are known working combinations with more data on different charge weights and COAL.

jmorris said:

Guilty as charged.
https://www.youtube.com/watch?v=1V_Hm3oqlO4

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You are like a mad scientist. Nicely Done

jmorris said:

Guilty as charged.
https://www.youtube.com/watch?v=1V_Hm3oqlO4

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You know, you really should be applying for patents with some of the devices you build. At least you would be able to then be reimbursed for time spent developing when someone might buy the rights.

Wasn't it Soloman, the wisest man in the world, that said in Lamintations that all man does is "folly"?