10mm Defense Ammo

[The_Shadow]

gandog56, Don't take my post so personal...it is not and attack on you!  It appeared you were at a lost for data or insight of where to even start if you were going to load that heavy 230gr. bullet.  I actually made time to scourer the internet, it has been a labor of love and is still my mission to study everything about 10mm guns and loading data.  You might even say (OCP) Obsessive Compulsive Passion.

I was just showing information on how Double Tap 230 grain bullets that were shown here got their start...Mike McNett use to visit several forums and actually posted his results prior to and as he started the Double Tap company.  The people got abusive and too abrasive toward him, and that sort of closed the door of communications on the forums.  Who suffers from that?  We all did, because he has a wealth of knowledge that is now kept to him and his company.

It is not hard to understand that as handloaders we ourselves could copy, can do our own work ups or disseminate known data and work with that data (plus/minus/equal) to use with other components. 

If I had a 230 grain Hard Cast bullet and wanted a place to start with loading data, I would look at known data with pressures if available.  If maximum data was still below MAP pressures for the cartridge, I would start a methodical process based off that information.  Working up and looking for signs of excessive effects...some people have pushed beyond even that point, split or ruptured cases, leaking, pierced or popped primers

When I got my first 10mm gun March 1990, I started developing many of my own loads using Blue Dot because NONE were in printed manuals at the time.  My dies from RCBS were labeled for 10mm Auto and NOT for 40S&W.
I compared data from 357mag and 41mag for reference being on either side of the 10mm.  I was very pleased with my results at the time even though I did have a CHRONOGRAPH at the time.

In closing here, please keep things here on the 10mmFireArms site civil and very friendly.

[Raggedyman]

Shadow, I have to say that I'm happy that McNett doesn't post anymore. His relationship with the truth is strained at best and several of his claims have proven to be false. We've known for some time that his ammo no longer lives up to the claims and between the testing that you, Intercooler, and I have done, several of his forum posts have been proven to be fabrications. Some things he has posted are true and some are not. With no way to know whether he's full of it, without testing for myself, I'd rather just not hear from him.

[jdub1836]

If you go to my YouTube  John Wright or search glock 29 100 yard underwood 180 gr good dots it'should pop up.
Im shooting underwood 180gr GD's out of my g29. I'm making double taps with nearly zero muzzle flip. If you point both thumbs straight at the target,"Long thumb grip." And lean into it like a boxing stance and use the icosoles triangle stance and apply equal stronge pressure to both palms on your grip you will reduce your muzzle flip by 50% just using the ling thumb grip. It's also amazing how many times I hit the small plate at that distance standing up. The video with towards the end of my session and I was getting a little lazy, at first I was Prob hitting 2/3 to 3/4 of the time.
Check out tnoutdoors for penetration on diff bullet loads, grains and power, you'll be supprised that some of the heavy fast stuff does not over penetrate. Underwood Gold dots for self defense and xtp's for Penetration for me both in 180. The gold dots tend to expand and make nasty peddles slowing them down. I've done extensive testing with this on pigs and deer with my g29. I also like to have a mag full of hard cast in the car and on me for when I need penetration or if I encounter some freak with body amour. My thought is it will knock the sh*t out of him and then I can go for the hip and then head.

[gandog56]

When I got my first 10mm gun March 1990, I started developing many of my own loads using Blue Dot because NONE were in printed manuals at the time.  My dies from RCBS were labeled for 10mm Auto and NOT for 40S&W.
I compared data from 357mag and 41mag for reference being on either side of the 10mm.  I was very pleased with my results at the time even though I did have a CHRONOGRAPH at the time

Yeah, and I just started using Blue Dot because in the middle of the powder drought, I managed to snag a 5 pound jug after I found it next to impossible to find my usual HP38 anywhere.