Loading the RMR 124gr FMJ

[Jonesy814]

A couple weeks ago I ordered 1000 of the RMR 124gr FMJ bullets. I ordered on a Wednesday night and had my bullets on Saturday. That's pretty darn good service considering they ship from Idaho and I am in PA. I loaded a small batch with 5.3gr of BE-86 and used an OAL of 1.135. 5.3gr fills the case enough that a double charge would overflow the case. This turned out to be a fantastic load. Accuracy was excellent and recoil was like factory ammo. From my SR9c the brass ejected about 6 feet. Liked the way they shot well enough that I loaded another 150 on Saturday. I noticed these bullets are quite a bit longer than the plated bullets I have been using. Even though 5.3gr is only slightly above the minimum recommended charge for BE-86, since I loaded them to my normal OAL and they are a long bullet, they felt like a midrange load.

 

[bullseye308]

I went through a thousand of those at 5.2 and 1.12 and they were amazing. Great bullets, great company, and great groups. Love RMR.

 

[egd]

I'm on my 2nd K.

 

[35 Whelen]

Where are you fellas finding information on the o.a.l. of this bullet? I bought 500 of these and used the Hornady manual for reference, seating to 1.15".
My favorite loads so far have been 5.4 grs. of Power Pistol (1135 fps) and 5.0 grs. of 20/28 (1125 fps).

35W

 

[Walkalong]

Where are you fellas finding information on the o.a.l. of this bullet?

and used an OAL of 1.135

This is where I would start. In general, I load 9MM RN to fall between 1.130 and 1.135. That one looks a tad blunt, but should be fine in most, if not all, pistols. Do the plunk test to be sure. If you have to load it shorter than the OAL used in whatever data you are using, be very careful approaching max.

 

[35 Whelen]

This is where I would start. In general, I load 9MM RN to fall between 1.130 and 1.135. That one looks a tad blunt, but should be fine in most, if not all, pistols. Do the plunk test to be sure. If you have to load it shorter than the OAL used in whatever data you are using, be very careful approaching max.

This is my second batch of 500 of these bullets, so I've already fired over 500 @ 1.15" and everything was fine. I was just curious about the o.a.l. The RMR bullets looked very similar in profile to Hornady which is why I went with their o.a.l.
I may experiment a little with o.a.l. where it pertains to velocity, using some of my lighter loads.
Off the subject, I did find that with "Lead Free" Tula primers velocities dropped a full 60 fps slower than with Federal 100's. This happened with two different powders; Clays and AA#7.

35W

 

[Louca]

RMR is my go-to bullet company, that's for sure. My 124 RNP round data is 4.6 gn W231 and OAL of 1.110. I based my OAL on the length of other commercial round-nose cartridges of the same bullet weight.

 

[bantam9]

I'm at 5.1-5.3gr WSF with the RMR 124 hardcore match RN--oal 1.150.
Accurate, easy to load, and consistent oal/crimp numbers. Perform well across all my 9mm platforms.
Oh yeah--I love those guys at RMR--excellent guys to deal with. My go to place! Did I mention my mail carrier dislikes me..

 

[egd]

Louca, what is the P of RNP for? I use 4.2 of 231 at ~1.130 so we're probably about the same velocity I'd guess.

Bantam9, I'm at 4.5 of WFS at ~1.130. Even though you're at a longer oal that seems like a pretty good difference in powder. Are yours pretty stout?

 

[bantam9]

Louca, what is the P of RNP for? I use 4.2 of 231 at ~1.130 so we're probably about the same velocity I'd guess.

Bantam9, I'm at 4.5 of WFS at ~1.130. Even though you're at a longer oal that seems like a pretty good difference in powder. Are yours pretty stout?

I needed 5.3 WSF to get good feed/ejection from one piece i have. Lesser was giving FTF/FTE. An old Winchester load book has that at max. It is a bit stout, but not bad. It is pretty accurate, and it feeds reliably so it's my go to load for that one. The 5.1 gr is an accurate/reliable load for a different gun. This summer gonna try to get to one load for all 9mm platforms.

 

[Louca]

what is the P of RNP for?

Since a round nose bullet is most often a full metal jacket, I add that letter to indicate "plated", since RMR has both available.

 

[longdayjake]

You put our bullets in an Xtreme box? Dangit. I gotta fix that. RMR labelled boxes coming soon!

Also, I get asked the OAL question ALL THE TIME! Problem is, every gun is different. So far, unless the barrel has no leade, 1.135 is what works in almost every gun. I've got several guns that we loaded to 1.16 with good results too. It doesn't really matter. Using regular 9mm data you aren't going to create enough pressure to do anything except maybe go into +p data no matter how deep you seat it.

 

[sellersm]

You put our bullets in an Xtreme box? Dangit. I gotta fix that. RMR labelled boxes coming soon!

That's exactly what I thought when I saw the pic!! I saw the Xtreme box, and thought "blasphemy!!"

Jake, don't worry about the boxes, just keep the prices low and we'll keep buying and putting them in our own containers!

I too have to 'compromise' when loading 9mm for all my various handguns, as they're all different! I can't imagine getting into any real trouble with overpressure from seating too low in a 9mm case, but we do need to be careful.

 

[Jonesy814]

You put our bullets in an Xtreme box? Dangit. I gotta fix that. RMR labelled boxes coming soon!

Also, I get asked the OAL question ALL THE TIME! Problem is, every gun is different. So far, unless the barrel has no leade, 1.135 is what works in almost every gun. I've got several guns that we loaded to 1.16 with good results too. It doesn't really matter. Using regular 9mm data you aren't going to create enough pressure to do anything except maybe go into +p data no matter how deep you seat it.

Since the box was open you couldn't see the top, so here it is. I scanned one of your stickers and made my own RMR box covers

 

[egd]

Yeah, I don't care about fancy boxes, just great bullets at a good price, which is what you give us Jake. Thanks

 

[bbqreloader]

Yeah, guilty as charged. Got all my RMR 40's 9's and 223's in the "other company's" boxes, just easier to store the extras. Perfect size and strength. Let us know when you come out with some, be more than happy to replace the other ones

 

[rocirish]

Here's how I do it