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February 4, 2019, 10:55 AM | #26 |
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I believe he was talking about rifles, in which the powder charge can be 1/3 the bullet weight or more. The "jet effect" is very pronounced.
Not so much in pistols. Not sure about shotshells. When I was shooting a lot of Trap, there was a theory that slow burning powders would accelerate the load more gradually and "spread out" the recoil even though a heavier charge was required. That was the American Model. The European Model was to use a light charge of fast burning powder to minimize the ejecta. My model? Could not tell a difference with the demands of getting on the targets. |
February 4, 2019, 02:00 PM | #27 | |
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Quote:
The energy of "ejecta" is certainly a calculatable thing. Might be useful if you are running numbers and looking for a result that tells you what part of A causes what part of B, but to me, it simply doesn't matter. The powder gas, and what ever percentage it adds to, or composes of the recoil energy doesn't matter, in this case. It's not something we can separate out. it is but one of the many factors involved in FELT recoil, and I think other factors override the effect from powder gas, in this case.
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All else being equal (and it almost never is) bigger bullets tend to work better. |
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February 6, 2019, 07:07 PM | #28 | |
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You're going to have a great career in the gun forums. I load a 3 ball .395 diameter 95gr load in my .410 shells that should be going around 1150fps. That puts each ball somewhere above the .380 and just below the 9mm in power. I know they blow the crap out of 2x4 wood. |
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February 7, 2019, 02:01 AM | #29 |
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I just watched a video of a guy firing a 3" Winchester .410 slug (1/5 oz) over a chronograph, from a 22" barrel gun. The chronograph showed 1808fps. Advertised velocity was 1830fps. That's close enough for me.
So, we've got a 87.5gr projectile at 1800 fps. The 1/4oz slug works out to be approximately 110gr, and its advertised velocity is 1800fps, so I would expect it to be a little slower than the lighter slug, but not a great deal lower. But lets say the 110gr slug does 1700fps (it might be faster), what pistol round does that seem closest to? I am still puzzled where the low numbers for slugs come from. All shotguns fire shot at speeds between (roughly) 1100-1300fps. This can be reached with black powder, and while faster speed is possible now, much faster is not done, with shot shells, because when you get past about 1300 or so, patterns get worse. Slugs don't worry about patterns. They are loaded to higher velocities than shot.
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All else being equal (and it almost never is) bigger bullets tend to work better. |
February 13, 2019, 07:16 AM | #30 |
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Earlier question about brass hulls.....
I have never been happy with .410 brass hulls. Why? The fit of components is an issue. Hulls from Magtech are drawn brass. The interior diameter is larger than standard .410 components. If you buy .410 slugs, they will rattle around the inside of a .410 Magtech brass hull. The same happens with shot loads...the hull is too wide for a proper fit with a .410 plastic wad. If you want to try brass hulls that work with little fuss, you have to buy lathe turned hulls like those made by the Rocky Mt. Cartridge Co. The hulls are NOT cheap. $90 for 20 2.5"/$94 for 20 3". They are very well made and will last longer than the gun will. Pete
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“Auto racing, bull fighting, and mountain climbing are the only real sports ... all others are games.” Ernest Hemingway ... NRA Life Member Last edited by darkgael; February 13, 2019 at 07:22 AM. |
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