Thread: Shed some light please

I have a steel gong at 100 yards for plinking. 6mm Hardox (I believe. )
Anyway. It already has a couple of holes from my 243 and 308 , so has become the sacrifial gong.
Mate just turned up to sight in his 7-08, and having got it shooting to POI, he put a couple into the gong.
Thing is, they only dented the bugger.

Now as far as I can tell from the numbers, that just should not happen. Whats the story?

Point of AIM, dumarse

Using armour piercing in the 243

Originally Posted by northdude

Using armour piercing in the 243

Not quite. 85 Nosler sp

7-08 is not a manly calibre?

Probably hit the quarry truck on the way down to the gong ....

Shot angle? Hit low so swing took impact? Gay 708?

Originally Posted by Pengy

Point of AIM, dumarse

Who are you calling dumb arse, dumb arse?

Himself, easier to just say its zeroed

Pengy, having failed School Certificate twice (the second time with distinction) I can absolutely tell you that the answer to your question lays in the diminished area of impact and the rate of transfer of energy on impact. You heard it here first.

Now knowing that you are slow on the uptake, I will give you an example. Think of your hand as a gong. You put your hand on the floor, palm up. Rushy jumps on your hand with the heel of his boot from a chair (this is the 7-08). Your hand hurts (is dented) but is not pierced. Now Gibo (who is there or there abouts half of Rushy's weight) jumps on your hand from the same chair but Gibo is wearing his wife's stiletto (as he has a tendency to do on a Friday night) and he lands the heel right in the centre of your palm (this is the 243) and Bob's your nana, a neat hole in the hand.

Too fucking right uncle but replace hand with flipper

Originally Posted by Rushy

Pengy, having failed School Certificate twice (the second time with distinction) I can absolutely tell you that the answer to your question lays in the diminished area of impact and the rate of transfer of energy on impact. You heard it here first.

Now knowing that you are slow on the uptake, I will give you an example. Think of your hand as a gong. You put your hand on the floor, palm up. Rushy jumps on your hand with the heel of his boot from a chair (this is the 7-08). Your hand hurts (is dented) but is not pierced. Now Gibo (who is there or there abouts half of Rushy's weight) jumps on your hand from the same chair but Gibo is wearing his wife's stiletto (as he has a tendency to do on a Friday night) and he lands the heel right in the centre of your palm (this is the 243) and Bob's your nana, a neat hole in the hand.

That story puts the shits up me, I hate the thought of a punctured hand, have stabbed myself with a Mercator right in the middle of my hand (palm side) whilst cutting the strings off a bale of silage before and while it was only a small injury it hurt like a bastard and made me get shivers down my spine whenever I felt or looked at it

Originally Posted by Rushy

Pengy, having failed School Certificate twice (the second time with distinction) I can absolutely tell you that the answer to your question lays in the diminished area of impact and the rate of transfer of energy on impact. You heard it here first.

Now knowing that you are slow on the uptake, I will give you an example. Think of your hand as a gong. You put your hand on the floor, palm up. Rushy jumps on your hand with the heel of his boot from a chair (this is the 7-08). Your hand hurts (is dented) but is not pierced. Now Gibo (who is there or there abouts half of Rushy's weight) jumps on your hand from the same chair but Gibo is wearing his wife's stiletto (as he has a tendency to do on a Friday night) and he lands the heel right in the centre of your palm (this is the 243) and Bob's your nana, a neat hole in the hand.

But that doesn't explain the holes attributed to the 308.

Couple of potential root causes:

1. If your gong is being penetrated, then it's not an AR500 equivalent plate of at least 10mm thickness
2. Velocity is the killer of steel gongs, followed by bullet construction. Anything traveling over 900m/s will cause damage, regardless of calibre. At slower velocities, the blunter the bullet construction, the greater the damage.
3. irregular heat treatment, or heat treatment that had been tempered through high temperature cutting and/or welding of the plate causing soft spots. Get a hammer and a centre punch and test the hardness of the surface of the plate - it will tell you if you have soft spots.

Originally Posted by gadgetman

But that doesn't explain the holes attributed to the 308.

I did wonder about that but I'm not a fucking scientist GM. I have another theory though and it goes like this ....... the 7-08 was useless and belly flopped onto the gong.