Xtreme 9 mm 124 gr RNCB - MP-Pistol Forum

Xtreme 9 mm 124 gr RNCB

This is a discussion on Xtreme 9 mm 124 gr RNCB within the MP Reloading forums, part of the Smith & Wesson MP Forum category; Does anyone know what reloading data to use for these bullets on data chart? They are not listed on any data chart. Alliant power pistol ...


Go Back   MP-Pistol Forum > Smith & Wesson MP Forum > MP Reloading

Reply
 
LinkBack Thread Tools Display Modes
Old January 10th, 2017, 11:45 AM   #1
Member
 
reloader's Avatar
 
Join Date: Dec 2013
Location: knoxville tennessee
Posts: 75
Xtreme 9 mm 124 gr RNCB

Does anyone know what reloading data to use for these bullets on data chart?
They are not listed on any data chart.
Alliant power pistol
Tite group
Or Silhouette
Also have hs-6
Any ideas?
reloader is offline  
Old January 10th, 2017, 03:24 PM   #2
Senior Member
 
Join Date: Jan 2016
Location: Central Maine
Posts: 760
The plating is meaningless (it's not a jacket). Use lead bullet data for the bullet weight and shape.

You're on your own in powder selection.
BrianK is offline  
Old January 10th, 2017, 03:40 PM   #3
Member
 
Join Date: Apr 2013
Location: AZ
Posts: 79
9mm-124 RoundNose HeavyPlateConcaveBase?
You could go to the X-treme web sight and see:
"Load Info

Our Copper Plated Bullets can be run at mid-range jacketed velocities or higher end lead velocities. We recommend keeping velocities to less than 1500 FPS (Feet Per Second) and using only a light taper crimp

Any velocities over 1200 FPS we recommend either our Heavy Plate Concave Base or Hollow Point products for superior accuracy. We recommend keeping velocities to less than 1500 FPS (Feet Per Second) and using only a light taper crimp."


So, take any data for 124gn 9mm bullets and start at the start load and work up to either the mid-range jacketed load or up to the top end lead bullet load.
As far as any hollow- or concave-base bullet, the extra bullet length is taken care of by the hollow base area, so the case volume stays the same and there is no need for any "special" load data.
It was so much easier before the '90s when manuals usually didn't even tell you what bullet they used. There was jacketed data and there was cast lead data, and no COL was mentioned since that depends on the specific bullet and gun used and can not be covered in a manual and must be determined by the handloader.

Snarky comment:
I would like to know the psychology of buying either bullets or powder without having load data at hand. I guess I'm just not a gambler.

Last edited by noylj; January 10th, 2017 at 03:45 PM.
noylj is offline  
 
Old January 11th, 2017, 07:57 AM   #4
Member
 
reloader's Avatar
 
Join Date: Dec 2013
Location: knoxville tennessee
Posts: 75
What is the OAL for the 124gr RNCB?
And when bullets are seated leaving a
Slight flat on point is this normal?
Using power pistol 6.0 gr
Attached Images
File Type: jpg 1484153763989239231883.jpg (3.47 MB, 25 views)

Last edited by reloader; January 11th, 2017 at 08:23 AM.
reloader is offline  
Old January 11th, 2017, 08:33 AM   #5
Senior Member
 
Join Date: Jan 2016
Location: Central Maine
Posts: 760
That's strange. It looks as though the base of the bullet is coming against a hard stop to swage the meplat in that way. Frankly that's hard to believe with that bullet weight. Heck, I load 160s in 9mm and don't have that problem with most brass brands (some are a problem).

What does the inside of the case look like? Does the inside base of the case extend far toward the mouth of the case? What brand is it?

As far as COAL, I only use that as a guide and not gospel. The cartridge needs to pass through the magazine, feed has to be flawless, and the bullet can't engage the rifling. If it does the last you can have problems when removing a round from the chamber. It can be either difficult to extract or can pull the bullet out of the case leaving you with a bore obstruction and an action full of loose powder. BTDT. So the first thing to decide is whether the round fits in the magazine. From there work on function.
BrianK is offline  
Old January 11th, 2017, 09:10 AM   #6
Member
 
reloader's Avatar
 
Join Date: Dec 2013
Location: knoxville tennessee
Posts: 75
Brass is brand new unprimed cases.
An them thru dies, primed ,and flared them for seating.
No obstuction
reloader is offline  
Old January 11th, 2017, 02:06 PM   #7
Senior Member
 
Join Date: Jan 2016
Location: Central Maine
Posts: 760
You missed the point. The base of the case, inside, thickens toward the base. If the lead bullet contacts the thickened portion the seater has 2 options... swage the brass which is difficult, or swage the meplat of the bullet which is lead and quite easy to do. Your meplats appear to be swaged. That leads me to believe that the bullet is bottoming out inside the case. I wanted to know the brand to see if I had some on hand to compare yours to.

I suspect the brass is screwed up and that's where I'm going with this. Especially since it's never been fired before. Read untested/unproven when you see "new brass". I like once fired brass for that reason. It has been tested and survived the loading and the firing.

If you have the capability to pull a bullet and see what the base of the bullet looks like do so and compare it to an unloaded bullet. If you don't have the capability acquire a bullet puller and check the base. You'll need one eventually anyway and this is that time. You can get an inertia or "hammer" type, but I find the collet type used in the press to be most convenient and far less annoying.

Last edited by BrianK; January 11th, 2017 at 02:11 PM.
BrianK is offline  
Old January 11th, 2017, 05:58 PM   #8
Member
 
reloader's Avatar
 
Join Date: Dec 2013
Location: knoxville tennessee
Posts: 75
The bullet base are concave heavy plate will look for my
Bullet puller.but base I know are not compressed.
Will look to see though
reloader is offline  
Old January 11th, 2017, 06:14 PM   #9
Member
 
reloader's Avatar
 
Join Date: Dec 2013
Location: knoxville tennessee
Posts: 75
Here are pictures
Attached Images
File Type: jpg 1484190643930-514336720.jpg (2.38 MB, 21 views)
File Type: jpg 1484190680742238090869.jpg (2.66 MB, 15 views)
File Type: jpg 1484190754288296622325.jpg (2.77 MB, 15 views)
File Type: jpg 1484190783797-465025869.jpg (2.40 MB, 14 views)
reloader is offline  
Old January 11th, 2017, 06:19 PM   #10
Member
 
reloader's Avatar
 
Join Date: Dec 2013
Location: knoxville tennessee
Posts: 75
Here are pictures
Flat nosed bullet sanding alone
Then Regularl RN in comparison pic.
Base of regular in my fingers
reloader is offline  
Old January 11th, 2017, 08:17 PM   #11
Senior Member
 
Join Date: Jan 2016
Location: Central Maine
Posts: 760
I couldn't tell if the bases were damaged at all. So it's up to you to determine that.

OK, the only other thing it could be is if the meplat has nothing solid under it. You might ask the manufacturer or dissect one. You'll know immediately if the nose is hollow, a utility knife will let you know. If that's the case the flat nose won't hurt anything. But if it bothers you contact your die manufacturer and get a seating plug of the correct shape.

How does one plate copper onto air is my question. Maybe they have a copper foil nosecone as part of their manufacturing process.

Last edited by BrianK; January 11th, 2017 at 08:19 PM.
BrianK is offline  
Old January 12th, 2017, 01:57 PM   #12
Member
 
reloader's Avatar
 
Join Date: Dec 2013
Location: knoxville tennessee
Posts: 75
Have never loaded new brass or RN
Bullets.
Tried both seaters i have with die set.
One puts flat spot other put a little Rounder Nose
On bullet. If brass is problem will it be better after shot?
reloader is offline  
Old January 12th, 2017, 03:08 PM   #13
Member
 
reloader's Avatar
 
Join Date: Dec 2013
Location: knoxville tennessee
Posts: 75
Here is picture of new brass
Attached Images
File Type: jpg 1484265983160792981463.jpg (4.11 MB, 16 views)
File Type: jpg 14842660145751320919392.jpg (3.19 MB, 12 views)
reloader is offline  
Old January 12th, 2017, 09:32 PM   #14
Senior Member
 
Join Date: Jan 2016
Location: Central Maine
Posts: 760
If you are using a RCBS seater they have a service where you send them a bullet and they'll send the proper seater plug. Call them first to verify that what existed as a service, and what I'm telling you, still exists today.

Have you cut into the nose on the bullet to see if it's hollow? Seating a bullet into properly sized brass won't swage the nose of a solid lead bullet even if the seater plug is flat. But if the nose of the bullet is hollow the flat seater will deform it. I never heard of such a bullet construction, but there's always a first time.

Firing new brass with a safe load once won't materially change the dimensions in a meaningful way. I always buy once fired because I know that the brass has worked once and I'll have no manufacturing surprises. Internal dimensions between brands are a different matter entirely. Not all brass works with my 160 gr bullets, so I gauge all of my ammo to find the culls.

Last edited by BrianK; January 12th, 2017 at 09:35 PM.
BrianK is offline  
Old January 17th, 2017, 06:05 PM   #15
Member
 
Join Date: Apr 2011
Location: Western Kentucky
Posts: 235
To be on the safe side ... I've learned to go with a Lee Factory Crimp on all Xtreme, Berry's, and otherwise "plated" bullets. It's not as agressive a process, but offers superior consistency to other methods.
RoosterShooter is offline  
Reply

  MP-Pistol Forum > Smith & Wesson MP Forum > MP Reloading

Thread Tools
Display Modes




Powered by vBulletin 3.8.7
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright © 2006-2012 MP-Pistol. All rights reserved.
MP-Pistol is a M&P pistol enthusiast forum, but it is in no way affiliated with, nor does it represent Smith & Wesson Holding Corp. of Springfield, MA.