New RMR 9mm MPR Nuke

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Someone recently did a gel penetration / weight retention test on the standard 124gr MPR; sadly I lost the thread. I'd be very interested to see how this new one performs compared to the standard.
 
These are basically an improvement of the MPR in every way. My biggest gripe about the MPR was how fast you had to shoot them to get them to reliably expand. Most short barrelled carry pistols just couldn't get there. Now, it's pretty easy to get to 1000 fps. I would personally try for 1050-1100 just to get the most expansion and ideal penetration but at 1000 they still expand and they penetrate about 16-18"

I called it the nuke because when expanded they basically look like a radiation symbol.

All we changed about them is we pre-cut the lead core and we changed the angle of the HP entry and increased the hole diameter about 10 thou. Meplat diameter is nearly identical to the original so it should feed the exact same with the exception of no more lead protruding from the tip. We had an issue with the lead protruding just a little from the originals and depending on how rough the post office was on them, they got discolored by lead rubbing on the bullets. This should solve that issue. Not that color affects accuracy or performance, but nobody wants to buy new bullets that look like they were tumbled in lead.
 
Very nice Jake and the team! I guess I’ll have to buy a bunch of these and use the older MPR’s I have in my PCC’s.
 
Or .357 mag for a snubby...
125 gr. Jacketed HP (4" /Universal Receiver) [Lyman 48th]

Acc. No.5 - Start: 10.6 @ 1223fps / Max: 11.8 @ 1471fps
Al. Power Pistol - Start: 9.0 @ 1238fps / Max: 10.0 @ 1479fps
VV N340 - Start: 8.1 @ 1147fps / Max: 9.0 @ 1366fps

I have never noticed .355" being a problem in a .357" revolver and I have loaded both Fiocchi 142gr. TCJ and Remington GS 125gr. .355" for .357 Magnum revolvers. The GS has a stepped driving band which measures .3565" and the Fiocchi has an engraved cannelure; the bullet's driving band measures .3555" Both work fine and are very accurate from my 4" .357's. I think I see an RMR order and some field testing with No.5 in my future. :)
 
Dang it! I have about 500 of the RMR MPR in my cabinet and 400-500 loaded up for my JIC handloads. No room. (maybe I'll move the "old style" into the house and store them under my bed). I'm thinking this may be a good bullet for my 2" 905...

Oh well, I guess I can find room for 500 more...
 
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longdayjake said:
Yes. In 115 and 124 grain. We are working on converting the older MPR machine to make a 135 and maybe a 147 grain bullet.
Click to expand...

Very nice! It's going to be a one stop shop for good HP offerings in 9mm!

Jake, please send out an email or post here when your 147gr HP's come out. I need a good economical HP for subsonic PCC use. It would be nice to have some 155gr+ offerings as there is room in the 9mm to push the grain weight up on subsonics and stay right under super speeds. This would allow more kinetic energy on target but still be subsonic.
 
I ordered 500 right after my last post, last Thursday. They arrived yesterday morning. Excellent looking bullets. Didn't have time to measure and weigh, but I'm confident they will all be right on...

Now if Jake would design a 124 gr and a 158 gr JHP at .357" with a cannelure, I would probably get some for my 38 Specials and 357 Magnums.(working up loads for my Taurus 605).
 
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Does anyone have the OAL for the hornady xtp bullet? I’d like to compare OAL of RMR’s for comparison using the Hodgdon data. OAL of the cartridge is listed at 1.06 on hodgdon’s website for xtp bullet. I can load RMR’s to 1.068 (will probably use 1.065 so I can remember it easier). I plan on using CFE pistol to get a little higher velocity than hp-38.
 
mdi said:
I ordered 500 right after my last post, last Thursday. They arrived yesterday morning. Excellent looking bullets. Didn't have time to measure and weigh, but I'm confident they will all be right on...

Now if Jake would design a 124 gr and a 158 gr JHP at .357" with a cannelure, I would probably get some for my 38 Specials and 357 Magnums.(working up loads for my Taurus 605).
Click to expand...
I would happily choose rmr over everglades should he start putting out 158s with a canalure
 
blackd24 said:
Does anyone have the OAL for the hornady xtp bullet? I’d like to compare OAL of RMR’s for comparison using the Hodgdon data. OAL of the cartridge is listed at 1.06 on hodgdon’s website for xtp bullet. I can load RMR’s to 1.068 (will probably use 1.065 so I can remember it easier). I plan on using CFE pistol to get a little higher velocity than hp-38.
Click to expand...
My notes say 124 gr. XTP is .578".
 
I measure .548 for the RMR bullet. So if my math is correct, I have more “room” in the case using the RMR bullet compared to XTP, if loaded to the same OAL. Should be safe to use hodgdon’s data starting at min and working up to desired velocity.
 
blackd24 said:
I measure .548 for the RMR bullet. So if my math is correct, I have more “room” in the case using the RMR bullet compared to XTP, if loaded to the same OAL. Should be safe to use hodgdon’s data starting at min and working up to desired velocity.
Click to expand...
I would just double check the plunk test. The bearing surfaces between the XTP and RMRs bullet are about .010" length of inch other.
 
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