Compound Rounds from Sureshot

[jagerbond]

I still think an ordinary bolt would have sufficed as an insert and been a bit more durable, but in any case as per e-mail this is a fantastic result and it's good to see it was worth all the effort you put into it

Yes, lead was what gave me the 1/2 caliber CG/CP differential... I agree though, carriage bolts would look nice and work well too. I am planning on some steel penetrator rounds for damage videos.

[Gaderelguitarist]

I am planning on some steel penetrator rounds for damage videos.

Yes!

What would be very interesting would be to make a round of UHMW with a mounting hole that can except either the lead nose or a steel nose.

Then you could sell not only the plastic portion, but also an assortment of metal tips.

[jagerbond]

I am planning on some steel penetrator rounds for damage videos.

Yes!

What would be very interesting would be to make a round of UHMW with a mounting hole that can except either the lead nose or a steel nose.

Then you could sell not only the plastic portion, but also an assortment of metal tips.

These have a 3/8" hole from nose to tail so you can add your choice of toppings.

[MountainousDew]

I noticed when I was looking over the pictures that the lead parts don't screw in, have any of them fallen out?
Or are they a tight enough fit?
That's what she said!

Edit: Have you tested these rounds in a pneumatic?

[jagerbond]

I noticed when I was looking over the pictures that the lead parts don't screw in, have any of them fallen out?
Or are they a tight enough fit?
That's what she said!

Edit: Have you tested these rounds in a pneumatic?

The lead caps have a coaxial bulge on the stem. We use a rubber hammer and tap them in. They fall out on impact sometimes, if they're not all bent up you can tap them back in and re-shoot.

[jagerbond]

Edit: Have you tested these rounds in a pneumatic?

We have not yet, but hope to soon.

[jeepkahn]

Any word on smaller bore projectiles??? 1" and .5" maybe???

[MountainousDew]

Any word on smaller bore projectiles??? 1" and .5" maybe???

Yeah, any word(s)?!

And have you fired the normak UHMW rounds in a pneumatic?

[jagerbond]

Any word on smaller bore projectiles??? 1" and .5" maybe???

1" material came in just the other day with 1.75, and 2.5" so they'll be along shortly... next week probably

[jagerbond]

Any word on smaller bore projectiles??? 1" and .5" maybe???

Yeah, any word(s)?!

And have you fired the normal UHMW rounds in a pneumatic?

Not yet... Soon though

[dewey-1]

jagerbond;

You have to show the "weeble-wobble hula dance" video.
This shoud give people an idea of its center of gravity.

[jagerbond]

jagerbond;

You have to show the "weeble-wobble hula dance" video.
This shoud give people an idea of its center of gravity.

OK OK


[youtube][/youtube]

[MountainousDew]

Do you think you could make a round for a 2 1/2 SDR sch 21 barrel?

It will be a while before I finish the gun, since I still in the design phase, but it will have a Soda can barrel... I drink a lot of Mountain Dew so why not recycle the cans by shooting them, right? I get to have fun and save the planet, sorta.

I measured the can and it came out to be a little over 65mm and Wikipedia agreed. I don't know the exact diameter since I was just using 2x4s and a plastic ruler, so it might have a larger diameter than the 2.5 inch stock you have...

[USGF]

Do you think you could make a round for a 2 1/2 SDR sch 21 barrel?

SNIP

I measured the can and it came out to be a little over 65mm and Wikipedia agreed. I don't know the exact diameter since I was just using 2x4s and a plastic ruler, so it might have a larger diameter than the 2.5 inch stock you have...

MD, I'm pretty sure the stock will be oversize. It may be close to 65mm. I checked a soda can here and it is 66mm. SDR 21 in 2-1/2 is supposed to be 2.655" nominal, approx 67.44mm. I'll go over the dimensions with Mike. I know the sched 40 2-1/2" rounds are on the agenda.

EDIT: Hold on, I found the material. It measures approx 65.6mm as it is not perfectly round

USGF

[dewey-1]

Do you think you could make a round for a 2 1/2 SDR sch 21 barrel?

SNIP

I measured the can and it came out to be a little over 65mm and Wikipedia agreed. I don't know the exact diameter since I was just using 2x4s and a plastic ruler, so it might have a larger diameter than the 2.5 inch stock you have...

MD, I'm pretty sure the stock will be oversize. It may be close to 65mm. I checked a soda can here and it is 66mm. SDR 21 in 2-1/2 is supposed to be 2.655" nominal, approx 67.44mm. I'll go over the dimensions with Mike. I know the sched 40 2-1/2" rounds are on the agenda.

EDIT: Hold on, I found the material. It measures approx 65.6mm as it is not perfectly round

USGF

I think your ID of 2.655 is the max ID for SDR26 not SDR21 at a 2-1/2 OD.
I get 2.581 nominal ID for SDR21. Min Max range of 2.554 to 2.608 worst case.

USGF Did you try the pipe ID speadsheet?