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-   -   Underwood 220 gr hardcast (http://glocktalk.com/forums/showthread.php?t=1444107)

deadandgone 09-21-2012 14:55

Underwood 220 gr hardcast
 
I'd been waiting for this....although I'm not sure I thought I would see a 220 grain....velocity seems outstanding....hmmmm....

harrygunner 09-21-2012 16:47

I was hoping for and suggested a 200gr WFNGC. The reasons being, one still gets good penetration, but more importantly, allows a standard Glock barrel rifling to stabilize the bullet.

Too heavy and this happens ( hickok45's video) :

Yondering 09-21-2012 23:56

The standard Glock rifling is fine for heavy bullets. It's the poor fit and crappy tolerances of that 230gr bullet that Double Tap uses that's the problem. The same is true for any cast bullet, they just usually aren't that bad.

Ken52789 09-22-2012 12:49

Gosh darn it! Now I've gotta save up for some 220 hardcast. Oh well i guess the 200 xtps, 135 noslers, and 165 gold dots will tide me over for now lol.

Ramjet-SS 09-24-2012 20:25

This is exciting ammo for the hunting 10mm enthusiasts.

The video is a good ole boy evaluation but cinder blocks are just too tough to cook. Even slow cooking doesn't tenderize them!

edhead35 09-26-2012 13:04

Using a G20, KKM 6" barrel, would the 220gr HC Underwood require more than the stock spring?

Sent from my DROIDX using Tapatalk 2

plouffedaddy 09-26-2012 16:45

Quote:

Originally Posted by edhead35 (Post 19458504)
Using a G20, KKM 6" barrel, would the 220gr HC Underwood require more than the stock spring?

Sent from my DROIDX using Tapatalk 2

Require--no. Might eject better.

edhead35 09-26-2012 17:02

What weight spring should I use with this ammo?

bac1023 09-26-2012 20:42

Very cool :cool:

10mm is an awesome round.

bac1023 09-26-2012 20:46

Quote:

Originally Posted by harrygunner (Post 19443119)
I was hoping for and suggested a 200gr WFNGC. The reasons being, one still gets good penetration, but more importantly, allows a standard Glock barrel rifling to stabilize the bullet.

Too heavy and this happens ( hickok45's video) : Glock 20 with heavy cast bullets - YouTube

Great video as usual from Hickok45.

However, someone needs to tell him that there's a big difference between hot 10mm and hot 44mag.

Travelin' Jack 09-26-2012 20:47

Quote:

Originally Posted by harrygunner (Post 19443119)
I was hoping for and suggested a 200gr WFNGC. The reasons being, one still gets good penetration, but more importantly, allows a standard Glock barrel rifling to stabilize the bullet.

Same here. That said, I'm pretty impressed with the 200gr TMJ Speer rounds. They seem to hold together very well.

arushus 09-27-2012 10:52

Quote:

Originally Posted by edhead35 (Post 19459156)
What weight spring should I use with this ammo?

IMO, you should use the same spring weight you use for any other hot 10mm round.

Otto33 09-27-2012 13:07

Per an email I got from Underwood, all bullets stabilized perfectly through a stock barrel. Even so, do you guys think I could expect leading since the bullets are not gas-checked?

Great forums btw. Glad to finally be part of it!

icelandicstud 09-27-2012 16:57

these bullets are gas checked.

edhead35 09-27-2012 17:07

Quote:

Originally Posted by arushus (Post 19461240)
IMO, you should use the same spring weight you use for any other hot 10mm round.

I just need a starting point on spring weight. This is my first venture into hotter loaded 10mm until I start reloading.

Otto33 09-27-2012 19:02

Quote:

Originally Posted by icelandicstud (Post 19462167)
these bullets are gas checked.

I had assumed they were, but the email I received from Kevin at Underwood specifically stated that the bullets are NOT gas checked. That's what lead me to post the question about leading in the stock barrel.

Taterhead 09-27-2012 20:05

Quote:

Originally Posted by edhead35 (Post 19462185)
I just need a starting point on spring weight. This is my first venture into hotter loaded 10mm until I start reloading.

Just shoot it with the stock spring weight and see if you feel that it is problematic. At that point you might boost spring weights if you find a specific reason, but it is totally not a requirement.

The only time my gun has failed (other than due to worn parts) is when I switched to a 22# spring. The stock spring is 100% with whatever loads I run. I replace it every 3000 rounds.

arushus 09-28-2012 16:56

Quote:

Originally Posted by edhead35 (Post 19462185)
I just need a starting point on spring weight. This is my first venture into hotter loaded 10mm until I start reloading.

I run an ISMI 22lb spring on my G20, and it's never failed me once, even with .40sw tulammo. I wish I had gotten the 24lb ISMI spring tho, 22lb wasnt enough for my gun with hotter ammo, it would still sling brass fifteen or twenty feet.

Like tater said, it isnt a necessity, shooting with the stock spring is perfectly fine. Personally, I do recommend a heavier spring if youre going to be shooting a lot of hot stuff, just to keep the battering down on your gun, but that's just me.

arushus 09-28-2012 16:58

Quote:

Originally Posted by Otto33 (Post 19461553)
Per an email I got from Underwood, all bullets stabilized perfectly through a stock barrel. Even so, do you guys think I could expect leading since the bullets are not gas-checked?

Great forums btw. Glad to finally be part of it!

Every bit of research ive done indicates that so long as you check your barrel every fifty rounds, and clean it when necessary, you will be fine...

doverpack12 10-03-2012 22:10

This is exactly what i've been waiting for. Although i kind of expected a 200 grain bullet. The 220 is fine with me if it works well. That is interesting if it is truly not gas checked. Any idea when it can be ordered, or has anyone recieved any yet and shot it?


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