Underwood 200gr Hard Cast provided by Intercooler Nov 2017

[Kenk]

Yep, after replacing my old puller, my new RCBS puller is running strong with the wood block method
Thanks

Ken

[sqlbullet]

I think the failures come from guys that are used to having to whack away on wood.  If you swing it at concrete the way you have to swing at wood, you will definitely damage the puller. I know the one time I put a ding in the snout of my puller it was after swinging away 4-5 solid blows on a block of wood with the bullet not even moving...Then I hit an anvil with similar force...Bullet came clear out, puller rebounded way back and I had a divot out of the nose of the puller.

I find 1-2 gentle taps on the top of my RCBS Rock Chucker is plenty to pull all but the most stout military sealed rounds.

[AZ_Shooter]

I believe I have bent or broken at least two impact bullet pullers before I realized less was more.

[Kenk]

I tried your Rock Chucker tap method last night, and actually like that better than the wood block...Thanks for the great idea!

[bear10]

From the description and photos of the bullet I would bet that they are using the Hi=tech coated bullets from Missouri bullet Company, I  have used several thousand of their 180gr  coated bullets and they are fantastic.

[The_Shadow]

Some of Underwood's newer offerings are shown as cast are Hi-Tek coated bullets... https://www.underwoodammo.com/products/10mm-auto-200-grain-hard-cast-flat-nose?variant=7865916751929

We haven't had the chance to get any in to document them! 

[Commo]

As mentioned above I have been studying this new version of the Underwood round, finally got an RCBS kinetic puller and here are some data to peruse til an official pulldown can be done.

Using a LabRadar chrono this clocked at 1176 fps muzzle velocity through my Glock 20 Gen 4..




I pulled down one round from a box of 20 purchased recently direct from Underwood..





The Hi-Tek coated bullet has one lube groove..it weighed 197.4 grains on my digital scale.





This one had 8.3 grains of what looks similar to the Power Pistol mentioned in the original pulldown..the weight bounced back & forth to 8.4 grains before it settled to 8.3 so I think it's close to the 8.4 grains found originally.

I still have some I can contribute to the official pulldown thread if desired.

Thanks,

Commo

[The_Shadow]

The powder in your picture you have shown in the pan is Hodgdon LongShot a silvery gray flatten ball powder.  8.4 grains LongShot was found in the 220 as well.
Power pistols is a fine cut flake dull gray/black color...but was found in the original post Nov 2017

[Commo]

Longshot it is!

Thanks,

Commo

[Commo]

Any thoughts on who makes this bullet?

As bear10 mentioned it does look like an MBC Steeler Hi-Tek bullet. MBC says their bullet is 18bhn and Underwood says 21bhn, otherwise they sure look alike..I'm likely to order at least a sample pack from MBC to see if I can replicate this load. I have loaded about 1500 of their 200 grain SWCs in 45ACP and have great results..

Don't know if they'll tell me but I'm going to put a query to MBC and will report back..

Commo

[The_Shadow]

commo, The MBC Steeler Hi-Tek bullet, shows a very long frontal band above the lube grove...
This is the picture they show for it...


The bullet you show doesn't appear to have that long of frontal band...Its hard to say exactly where UW is getting his bullets and things change as suppliers change.

[Commo]

Hmm, the MBC does look deeper, but maybe it's the angle I shot my original pic from.. here's another shot from eye level..



Commo

[Commo]

Already heard back from Brad Alpert, Director, Global Strategery & Operations Manager at Missouri Bullet Company...he said they don't sell direct to Underwood but a distributor might..

Brad says, "it's a standard mould that comes from Magma Engineering, the folks who make all the casting equipment that everyone uses.  Most casting companies don't make that bullet, preferring to stick with the .40 Short and Weak (.40 S&W) family of lighter bullets.  But I'm a Colt Delta Elite guy from way back, so naturally I wanted to make it for fellow fans."

I believe he's talking about their product specifically and not claiming the Underwood bullet is an MBC; I'm going to order in a bunch and give 'em a try.

Commo

[The_Shadow]

That angle of the bullet is easier to see the longer front band.  Thanks for posting it!

[Commo]

So I've got 500 MBC 200-grain bullets on the way, and just purchased a pound of LongShot..with some new Starline cases I'll soon report back on how my clones are shooting...

Commo