Rocky Mountain

gifbohane

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Nov 7, 2016
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Did anyone notice if Jake had any sales over this Memorial Day weekend? LIke 9MM.
 
I didn't notice, but then, I didn't look. Looking is probably the best way to find out.

Very helpful post. I looked at the web site an hour before I made my post. Nothing. I thought that perhaps he had something special for High Road guys.
 
If you use RMR bullets, what do you use for load data?

Say these nukes in either 357 Sig or 9mm? Same as a Hornady 124 XTP? Or ?????
You could use RMR load data listed on Hodgdon website - https://www.hodgdonreloading.com/reloading-data-center
  • 9mm 124 gr RMR JHP No. 5 COL 1.120" Start 5.5 gr (989 fps) - Max 6.1 gr (1,076 fps)
BTW XTP load data (Note shorter OAL):
  • 9mm 124 gr Hornady XTP No. 5 COL 1.060" Start 4.8 (905 fps) - Max 5.7 gr (1,075 fps)
I have referenced various load data for JHP for my RMR load development and if using shorter OAL for MPR/Nuke with shorter nose that seats the base deeper, I would reduce start/max charges by .2-.3 gr.

BTW, Speer load data I have used for reference for comparison - https://reloadingdata.speer.com/downloads/speer/reloading-pdfs/handgun/9mm_Luger__124_rev1.pdf
  • 9mm 124 gr Speer GDHP No. 5 COL 1.120" Start 5.7 gr (963 fps) - Max 6.4 gr (1069 fps)
 
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If you use RMR bullets, what do you use for load data?

Say these nukes in either 357 Sig or 9mm? Same as a Hornady 124 XTP? Or ?????

https://www.rmrbullets.com/shop/bullets/pistol/9mm-355/9mm-124-gr-rmr-jhp-mpr-nuke/
I had to set the 124 gr. Nukes to 1.090" for them to pass the plunk test in all of my 9mms. That would be .018" deeper seating depth that the original RMR JHP. The original JHP bullet OAL is .561" compared to .543" for the Nuke. Using a comparator, the original JHP meplat is .168" and the Nuke is .207".
I went with Hornady's load data, as it has a tighter margin that gives the Nuke more wiggle room.

A 10 shot recording of the 125 gr. Nuke with 5.3 gr. of CFE-Pistol gave an average or 1111 fps. out of a 4" barrel.

I have some loaded up for 357 SIG, but haven't shot them yet.
 
I have referenced various load data for JHP for my RMR load development and if using shorter OAL for MPR/Nuke with shorter nose that seats the base deeper, I would reduce start/max charges by .2-.3 gr
I had to set the 124 gr. Nukes to 1.090" for them to pass the plunk test in all of my 9mms. That would be .018" deeper seating depth that the original RMR JHP. The original JHP bullet OAL is .561" compared to .543" for the Nuke.
RMR MPR/Nuke is essentially truncated RN profile meant for more reliable feeding and also to be used for .357 Sig (Hence "multi-purpose").

index.php


Here old RMR JHP (similar to Speer GDHP profile) is compared to new MPR/Nuke showing the difference in nose profile/base length for seating depth that requires shorter OAL

index.php
 
RMR MPR/Nuke is essentially truncated RN profile meant for more reliable feeding and also to be used for .357 Sig (Hence "multi-purpose").

index.php


Here old RMR JHP (similar to Speer GDHP profile) is compared to new MPR/Nuke showing the difference in nose profile/base length for seating depth that requires shorter OAL

index.php
I would like to get my hands on a couple boxes of 124 & 125 gr GDs to compare.

Here are some other bullets for comparison.
20221008_092322.jpg
These were measured with cheap calipers. My final measurements were with micrometers.
 
Was looking for more load data for the RMR bullets and discovered that Ramshot Ed. 8 manual lists many loads for the RMR 124 grain JHP nukes.........old version.

https://ramshot.com/wp-content/uploads/2020/08/WesternPowdersHandloadingGuide8.0_WEB.pdf

Handgun data starts around page 24.

I assume all of that would be still be valid, except for COAL part of 1.120? If using the new version of the nukes, if those were shortened up to COAL of 1.040 or 1.050.......good to go?
 
Was looking for more load data for the RMR bullets and discovered that Ramshot Ed. 8 manual lists many loads for the RMR 124 grain JHP nukes.........old version.

https://ramshot.com/wp-content/uploads/2020/08/WesternPowdersHandloadingGuide8.0_WEB.pdf

Handgun data starts around page 24.

I assume all of that would be still be valid, except for COAL part of 1.120? If using the new version of the nukes, if those were shortened up to COAL of 1.040 or 1.050.......good to go?
You would be looking at .070"-.080" shorter cartridge. And the seating depth would be .052"-.062" deeper with your COAL compared to Western's load data. Too risky in my opinion.

That is why I went with Hornady's load data. In the picture I posted in post #13, the far right bullet, 124 gr. P.D. (Precision Delta) is a near clone for Hornady's 124 gr. XTP. They're within .003" OAL of each other. And they're truncated angle (included angle) is 2 degrees of each other. Hornady's OAL for the 124 gr. XTP is 1.060" or 1.065". I'd would have to go out and look. So you would still have some wiggle room with the COAL that you are looking to shorten them to, and going by Hornady's load data.
 
Was looking for more load data for the RMR bullets and discovered that Ramshot Ed. 8 manual lists many loads for the RMR 124 grain JHP nukes.........old version.

https://ramshot.com/wp-content/uploads/2020/08/WesternPowdersHandloadingGuide8.0_WEB.pdf

Handgun data starts around page 24.

I assume all of that would be still be valid, except for COAL part of 1.120? If using the new version of the nukes, if those were shortened up to COAL of 1.040 or 1.050.......good to go?
I load all my RMR 124gr "nukes" at 1.120. They feed fine in all my 9mm's. I actually just received 2k yesterday. I came home and loaded 300 more up after work. I love these bullets and the price. Screenshot_20230624_010123_Gallery.jpg Screenshot_20230624_010054_Gallery.jpg
 
RMR Bullets is the only store where I buy jacketed bullets. If their bullets are good enough for Eley they are for sure good enough for me. (although I was a customer before that contract)
Missouri Bullets is my Cast bullets source.

Both establishments are run by top shelf people who respect their customers and themselves.
These are the people I want to, and do support.

If it ain't broke, don't fix it lol...
 
Was looking for more load data for the RMR bullets and discovered that Ramshot Ed. 8 manual lists many loads for the RMR 124 grain JHP nukes.........old version.

https://ramshot.com/wp-content/uploads/2020/08/WesternPowdersHandloadingGuide8.0_WEB.pdf

Handgun data starts around page 24.

I assume all of that would be still be valid, except for COAL part of 1.120? If using the new version of the nukes, if those were shortened up to COAL of 1.040 or 1.050.......good to go?

Did some testing with the 124 Nuke because I have to load them pretty short for a Canik Mete. I compared the Nuke to some 124 Fiocci JHP and 124 HDY XTPs using 3 diff guns. All loads wer 4.0gr 231 in Starline cases, Ginex spp and loaded on a Dillon 550. Nuke oal - 1.050. Hdy XTP oal 1.060. Temo 67 deg, 7 shot strings. The Fiocci is advertised at 1100fps.
Canik Mete SFT 4.46" Barrel: Fiocci-1140fps/11sd -- XTP-1069fps/5sd -- NUKE-1060fps/4sd
SA Ronin 5" Barrel: Fiocci-1136fps/12sd -- XTP-1035fps/9sd -- NUKE-1029fps/8sd
Canik TP9SFX 5.2" Barrel: Fiocci-1194fps/11sd -- XTP-1085fps/7sd -- NUKE-1078fps/9sd

I also tested 3 diff primers in the METE. Same load, different day.
CCI spp-1055fps -- Ginex spp-1056fps -- Fed srp-1063fps

I agree with the above comments on RMR bullets. It is really all I use in 9mm. I got the XTPs so I had actual book data with an exact bullet and powder match for comparison purposes.
 
From the perspective of a 9mm reloading newb looking at this from a distance, it seems to me the only way to compare these various bullets of same weight is for the base of the bullet to be seated to same depth. That way, internal case volume is the same so pressure ought to be the same. Working off the nose is a problem since all of them have different shapes and projections, yet that is what we have to measure, so COAL it is. The question then becomes what COAL is needed for each bullet to get base the same.

Only way I can see to do that is to measure height of bullets themselves, then add or subtract difference to that when loaded, seated base of bullet is the same.

One other way I've though of would be to take a piece of wood dowel and work with it until a bullet seated to come to a full stop on the wood insert is seated to desired COAL. Then use that dowel to set up dies for unknown bullets and base will be where it needs to be and nose is what it is.

In the research I've done I've never seen jump to lands (as is considered in rifles) ever mentioned for pistol rounds.
 
Did a quick test and so far my theory is holding. Looking around for something to drop in an empty fired case to use as a spacer, first tried 0.330 #00 buckshot.......too large. Then tried #4 buckshot.....too small. Last thing I had to try was 1 1/2 buckshot, measuring 0.310. When a Hornaday 124 gr XTP bullet was inserted over that to hard stop, COAL became 1.080.......so .020 over published seating depth of 1.060. Tried same piece of .310 buck with a 125 gr Sierra JHP.......and it stopped showing COAL of 1.055, so also 0.020 over some published load data for that bullet. Sierra actually has it at 1.030, but 1.035 would work.

So if you want to seat all bullet bases to same depth, and use Hornaday 124 gr XTP as your baseline, and get it spot on, you need something to drop in the case as a spacer measuring (0.310 - 0.020 = .290). BPI sells a #1 buckshot that has diameter of .295. That would be the easy, off the shelf version. Or make something. #2 lead pencil fits the cases and would be easy to sand to length.
 
So if you want to seat all bullet bases to same depth
You're over thinking it.

1. Measure bullets lenghts
2. Adjust OAL to reflect difference
3. Same amount of bullet is seated in the case

The above is what I did when I switched from loading 124gr RN to loading 124gr FN (before the existence of Matchwinners)...the math is easy (subtraction) and adjustment is a breeze when you're seating with a Redding Competition Seating die (each mark/tick equals .001" delta in seating depth)
 
From the perspective of a 9mm reloading newb looking at this from a distance, it seems to me the only way to compare these various bullets of same weight is for the base of the bullet to be seated to same depth. That way, internal case volume is the same so pressure ought to be the same. Working off the nose is a problem since all of them have different shapes and projections, yet that is what we have to measure, so COAL it is. The question then becomes what COAL is needed for each bullet to get base the same.

The issue you will find loading auto's over say revolvers is setting the depth by the base depths will eventually cause a fail to feed or fire out of battery if the bolt doesn't close all the way.

As you mentioned, various shaped ogives and different diameter noses on FMJ FP or HP all will effect the feeding from the magazine to the chamber, and depending upon the dimensions of the chamber will effect proper functions of the slide and bolt. This is the main function of the plunk test, to ensure you get a fully chambered round. That said, just because it will drop evenly into the chamber doesn't necessarily mean it will feed properly from the magazine. You still may have to adjust a smidge deeper to get a proper feed.

With my pistols, I usually make up a dummy round, sans powder and primer, for each bullet I load. Then I take a ultra fine point sharpie and note it on the case, along with the OAL. On the 9's I just have too many options. Some of my cast are longer than some jacketed of the same weight so there is no one length fits all.

The above allows me to quickly back the seating stem out, raise the bullet into the die, and set the depth by running the stem back to the tip of the dummy.

If you are only loading for one pistol of a particular caliber, this is pretty easy, but throw in another, or several more of different makes and type then you'll find one size doesn't fit all.

The issues with capacity over powder becomes an issue with several different calibers. This is why when you change components you should back down and work back up.
 
I'm loading RMR "Nukes" with a COL of 1.06". That's pretty short, I know, but I'm loading for my shortest throated pistol, which is a Glock 48. I also have a carbine with a very short leade.
View attachment 1158470

1.06" is where im testing right now for shortest lead CZ. 1.08 and 1.07 gave inconsistent plunk test but fired and cycled fine, probably and most likely a pressure increase but I can't tell. Just plunking to be safe moving forward for this pistol.
 
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