Too many acronyms 

I think ultimately I will load up some xtreme plated and some FMJ from a different brand and see what works best for me. I had originally wanted to go with a 90gr bullet, but the lowest xtreme goes is 100 gr in their 380 section.

Heavy plate concave base

Quote from: DM1906 on April 09 2016 12:00:42 AM MDT
I don't have a dog in this fight, and I get no profit from endorsing the bullets, but the X-Treme plated bullets defy logic. I've used them for 9x25 as fast as I could make them go, as well as their .40 180 gr. bullets in my .38-40 at near 1800 FPS. They survive the trip, but they are soft lead swaged cores. The plating does its job and remains intact. Berry's, and to a worse degree, Rainier, begin to fail beyond transonic. I use them also for .460 Rowland (200 and 230 gr. HP's) and so far, they're doing great. Thicker plating and greater adhesion, I suspect, but I can't say for sure. They just work.

Thanks again for sharing your experience. Last question - were you using the standard xtreme plated or their heavy plated (HPCB) variants?

DM1906, I was under the impression you would have the same issue you mentioned with plated bullets fragmenting on impact with xtreme plated bullets. Wouldn't the velocities of the 9x25 cartridge be far too high for any plated round - be it Berry's, xtreme, or others? Have you had good luck with xtreme bullets and the 9x25 cartridge?  I've used xtreme a ton with great results in other, slower moving rounds, but assumed they wouldn't work well in this application. Would love to hear first hand experiences

Thanks Shadow! I was also thinking (haven't tested this to know for sure) that the amount of H110 I would need would likely barely, if at all, fit in the case without a compressed load. Definitely seems like for my application I should stick to a faster powder. I have longshot, power pistol, and CFE So I should be good to go as far as powder is concerned.

My question around projectile choice is based on cost. XTP's are pretty pricey just for punching paper at the range. Any reason a FMJ round of the same bullet weight (generally cheaper) would not perform as well for basic range use?

Looks like I should have put this in the wildcat sub forum. Mods, feel free to move if appropriate.

Hey all, I've enjoyed reading about some of the history and load work up for this round and want to start hand loading it myself. I already have a Lone Wolf 6" barrel for my G20 and 100 rounds of factory 9x25 ammo (125r TMJ).

I've read the pulldown threads and would like to mimic some of the Underwood rounds to the best of my ability (not necessarily the same bullet weight at the underwood rounds I already purchased).

I am intrigued by the 2000 ft/s velocity mark, so I'm thinking I'll go with a 90gr or maybe 115gr pill. I noticed that in most threads, a jacketed hollow point (usually Hornady XTP) is used. Why is that? I understand the velocity is too quick for a plated projectile - which is what I generally use for other calibers when I'm loading up cheap/plinking loads. Could I use a cast lead or hi-tek coated lead projectile? What about a FMJ projectile in the ~90gr range? I'm sure there is a good reason here, but a newbie like myself doesn't know...

Secondly, I'll probably use Longshot powder, since it seems to be a favorite go-to for the 9x25 cartridge. In another thread here, I saw screenshots of an old loading manual that mentioned the use of slower powders, like H-110. I have a big jug of this and would love to use it up if it will do the job. In my research, it seems the use of slower powders like that were used to help run the compensator on older race guns. So on a non-comped gun like my G20, am I barking up the wrong tree using H-100? Will it even work well if I decided to go with a light, 90gr projectile?

Last Monday I picked up a brand new G20. Before even taking it to the range, I installed a Lone Wolf barrel (stock length), 24 lb recoil spring and stainless guide rod, and talon grip tape. I bought some stout Underwood ammo loads with the goal to try and replicate heavy 10mm factory loads. I worked up a ladder of different powder weights and went to the range (from 7.8gr - 8.9gr using the components detailed below). After my range session, I wanted to further explore a couple of loads I was testing.

*Use at your own risk*

Caliber: 10mm
Case: Starline (new)
Primer: CCI LPP
Powder: Alliant Power Pistol
Powder grains: 8.6 gr
Projectile: Xtreme Copper Plated 180gr
OAL: 1.26 inches

Here's how they turned out.



For the sake of comparison, here are my handloads up against the two flavors of Underwood I purchased. From left to right: Underwood 180gr FMJ, Underwood 200gr hard cast, handload recipe above.



I also brewed up a handful of 9.0gr loads (in my previous load work up, I went up to 8.9gr so I know I can jump to these without significant danger). If I like what I see here, I'll probably go forward with these. To reiterate, I need to run my loads through a chrono before I am fully satisfied with what I'm pushing out and arrive on a final recipe.

Both recipes referenced above are beyond published book values, so be careful and happy shootin'!

Thanks for the welcome. I am a fairly new reloader so I do not plan to push the limits of printed data by much, if at all. In what I have read so far, it seems I would be well-off to pick up some Longshot for my 10mm loads. I'll keep poking around in the reloading forum for more great data!

New guy here, names Josh. Just purchased a gen 3 Glock 20. Here in California we have to wait 10 days before I can go pick her up. Looking forward to some stout recipes for the mighty 10. If anyone has some specific pet recipes for CFE pistol or power pistol powder shoot me a message! I've already purchased a 24# recoil spring and lone wolf barrel in anticipation...

Pics to come once I pick her up