Glock 20 and 220gr

[Seabeeken]

Now that changes things quite a bit.
Limiting factors are pressure and case capacity in all of the following

 

[Seabeeken]

Update based on mew bullet dimension and weight and COL of 1.260
Blue Dot

 

[Seabeeken]

Longshot

 

[Seabeeken]

Power Pistol

 

[Seabeeken]

Accurate #9

 

[Seabeeken]

Came across this on another site. 150 Jack hammer running 1400 fps in a G20 penetrates as deep as 220 HC and runs straight in gel test. Compared to 220, the 150JH has more energy at 1315 fps. Ordered a sample pack for testing and if they shoot well, this will be my bullet

 

[alaska]

I have no desire to shoot or use anything lighter than 200 gr in my trail pistol . But thanks for the info.

 

[memtb]

Came across this on another site. 150 Jack hammer running 1400 fps in a G20 penetrates as deep as 220 HC and runs straight in gel test. Compared to 220, the 150JH has more energy at 1315 fps. Ordered a sample pack for testing and if they shoot well, this will be my bullet

How wide is the metplat! The surface area, rounded/pointed/trunucated, ect. will penetrate deeper than a wide metplat (flat nose) bullet. But…..will cause less hydraulic shock, and less tissue trauma, both temporary and permanent! I'll take deep penetration with extensive tissue trauma/damage over merely deep penetration! JMO

Now if a kevlar vest is involved…..I may take a serious "lookie see" at those Jack Hammer's!

Energy is far, far overrated…..especially in a low energy firearm such as a handgun! memtb

 

[Seabeeken]

I dont have the bullets yet to take any measurements. I have seen how the jack hammers expand I will will be using them over a hard cast.

.400 (10mm) Cal-150gr Jack Hammer™ - Hammer Bullets

This pure copper Jack Hammer™ is designed for the very popular 10mm semi-auto handgun. It will also work well in the 40 Smith and Wesson. The Jack Hammer™ is designed for deep penetration and large wound channels from the cupped nose design making it a very lethal personal protection bullet.

hammerbullets.com

example of jack hammer expansion

 

[436]

My Pistol
Glock 20 with KKM 4.6"
22 pound Spring

Got my components together !
220gr (214gr by weight) Coated Hard Cast
Starline 10mm Brass
WLP primers
Longshot Powder

Trying to duplicate Underwood 220gr load of 1134 fps in 4.6" G20 for Alaska Trails !

Any Suggestions !

I'd try Blue Dot and search out loads with that combo, I have the same G20SF and Blue Dot works great in mine. Good luck Cheers

 

[alaska]

I have some load data with BD and 200gr Hardcast and 214gr Hardcast. This is my Foe with G20 !

 

[436]

I have some load data with BD and 200gr Hardcast and 214gr Hardcast. This is my Foe with G20 !

Nice work... he looks very tired. Cheers

 

[memtb]

Nice work... he looks very tired. Cheers

The hunter or the bear? memtb

 

[alaska]

I was on moose stand this year and a bear came in close and growled at me. The vegetation was thicker in early season 02 Sep and never did see him. I always keep my G20 in camp and on me while quartering moose. Not seeing him was worst than seeing him. I carry either the Redhawk 4" in. 44 mag or my G20 for 25 years in Alaska. Sure wish I could have seen him for a shot with the rifle.