Reloading Data Needed .45 230 Gr. RMR Hardcore Match Round Nose Plated

[Bigboss1911]

I recently purchased some bullets from Rocky Mountain Reloading & I could use some help figuring out a Bullseye or Red Dot load for .45 230 Gr. RMR Hardcore Match Round Nose Plated .452


I noticed I needed to OAL them around 1.230 which passed my plunk test they chamber and extract well at this length.

as to the loading data I'm still trying to find a good load before I try shooting them. A friend of mine recommended around 5.2 to 5.5 Bullseye any help or suggestions would be appreciated ty.

 

[larryh1108]

My go to is 5.0 Bullseye for 230gr plated. Always cycle my slides and is soft shooting. However, my OAL is 1.267. Since 5.0gr is mid-range going 1.23 OAL should be ok but, as always, start low and work up.

 

[Bigboss1911]

Ty for your reply do you happen to know the fps for the 5.0 load?

 

[LiveLife]

Welcome to THR.

With RMR HM 230 gr RN, 1.230" worked well for SA/Citadel 1911 but I needed to use 1.200" for my Sig 1911 - http://www.thehighroad.org/showthread.php?t=761471

Alliant lists 5.1 gr as max charge for 230 gr lead RN and I have used lead load data for plated bullets with good results. I have used 4.0 gr of Red Dot/Promo for 200/230 gr lead/plated bullets with good results. Since you are using shorter than published 1.270" OAL, how about trying 4.0 gr and incrementally work up from there?

Here's Alliant load data - http://www.alliantpowder.com/reload...owderlist.aspx&type=1&powderid=4&cartridge=35

45 Auto 230 gr Speer LRN Red Dot OAL 1.270" Max 5.1 gr (841 fps)

BTW, here's chrono data for 4.2/4.4/4.6/4.8/5.0 gr Red Dot with 230 gr RN plated bullet @ 1.265" for reference (using shorter OAL will produce higher velocities) - http://www.brianenos.com/forums/index.php?showtopic=195257&p=2244488

 

[Bigboss1911]

Thanks for your reply I appreciate the fps stats as well =) do you have any information as to how I can determine the use of a shorter OAL around 1.230 and how much higher velocities it will produce

 

[LiveLife]

We could only make an educated guess as different bullets, barrel lengths, etc. will affect muzzle velocities.

You would need to use a chrono to be sure.

 

[Rule3]

The standard "Military" load for the 45 Auto and 230 gr ball ammo has been 4.6-5.0 gr of BE from the beginning of time

COL depends on your bullet/barrel fit. Your plunk test determines that.

http://www.thehighroad.org/showthread.php?t=502154

 

[1KPerDay]

I agree with bds. Since you're quite a bit shorter than recommended start with 4.0 red dot and work up. I wouldn't go over 5, personally. I generally load 4.7ish at 1.260". But plunk and feeding tests will differ for you of course.

 

[just for fun]

My go to is 5.0 Bullseye for 230gr plated. Always cycle my slides and is soft shooting. However, my OAL is 1.267. Since 5.0gr is mid-range going 1.23 OAL should be ok but, as always, start low and work up.

Same here 5.0 Bullseye (back in the day when I had some on hand!) Got good groups and never saw a reason to go beyond that. Seated mine a pinch longer at 1.275

 

[Bigboss1911]

Well I decided to grow a pair and try the rounds at 5.2 Bullseye at a col of 1.225-1.230 with a very light factory crimp my barrel size in my 1911 is 5" the rounds shot pretty well it didn't seem like it was over charged but I didn't compare any factory loads with them at the time I will do that in a few days and let you guys know what I discover. I'd also like to say TY again to everyone who has helped in figuring this out and sharing your load data this really is a great community of Reloaders. Please feel free to keep adding more information on this if you wish all information is useful.

 

[Dudedog]

I, like BDS have had good luck with 4 gr of Promo. (Red Dot). I have also used 4.1 and 4.4 of Bullseye. Tough call but 4.4 seemed to shoot a little better for me.

 

[Toprudder]

My data, from my loads, on my equipment, and my gun. YMMV. Start low and work up.

Here are the loads I tried with Red Dot and the RMR Hardcore Match 230gn (formerly known as "Thick Plated").

Winchester large pistol primer, COL 1.200". Shot from a 4.5" barrel.

4.5gn, 769.0fps, 13.2sd, 35spread. 1.5" @ 10 yards, offhand
4.7gn, 800.4fps, 8.3sd, 22spread. 1.2" @ 10 yards, offhand

I had two more higher charges to test, but 800fps was my velocity limit.

I was VERY pleased with the accuracy of this load. At some point I may go back and start at a lower charge and try again.

 

[RainDodger]

for bds: I had the same problem with a Sig 1911. Very short chambers... I'm having a gunsmith friend increase the leade a bit so I can chamber longer rounds without whacking into the rifling.

 

[LiveLife]

Like Missouri 9mm 124 gr RN (SmallBall), I don't see it as a "problem" but a bullet with greater accuracy potential due to longer bullet base/bearing surface.

Yes the almost no leade and quick start of rifling with tight chamber forces you to be more consistent with your reloads but sometimes "tight" is good.

 

[Bigboss1911]

updated result

Well I had a chance to compare my 5.2 bullseye rounds at 1.225ish rmr hardmatch round nose 230s to some factory winchester rounds my reloads feel very close but maybe just a little stronger so I'm going to knock it down to 5.0 bullseye and try that.

 

[drband]

.45acp 230gr RMR Match plated RN
Red Dot 1.264 OAL
Remington 1-1/2 LPPs
also used CCI 300 LPPs, no difference.
4.0gr soft shooting revolver loads
4.6 medium all-around works in all my semiautomatic pistols
5.2 feels like commercial SD loads (worked up to this--no issues)
The above are for info only--use at your own risk.
I highly recommend Red Dot.