RL15 With 55gr FBHP

[Robert]

Any one have some data for RL15 With 55gr FBHP (Midway Dogtown Bullets)?

 

[Robert]

I found this posted on the interwebs, can anyone confirm?

Modern Reloading- Second Edition, by Richard Lee.

Projectile - 55 Grain Jacketed Bullet
OAL - 2.215"

Powder Reloder15

Start Grains - 25.3 NEVER EXCEED - 28.0 Velocity FPS - 3081 NEVER EXCEED - 3390 Press Units - 53,600 PSI Min.

 

[fnfalsar48]

What cartridge are you trying to obtain data for?

 

[Robert]

Opps .223

 

[fnfalsar48]

You have the correct data as published by Alliant powder with these notes

USE THIS DATA WITH ALLIANT BRAND POWDERS ONLY.
REDUCE LOADING DATA 10% TO START AND WORK-UP.
DO NOT EXCEED THE ABOVE LOAD.

 

[Robert]

Thanks!

 

[Jolt]

My old MCR 3rd edition for RL-15 55 grain lists
Start 25.0 gn at 3040 fps
Max 26.5 at 3342 fps

 

[Robert]

My old MCR 3rd edition for RL-15 55 grain lists
Start 25.0 gn at 3040 fps
Max 26.5 at 3342 fps

Hmmm that is a lot different...

 

[Pinecone]

This is why you start low and work up the load.

And .223/5.56 especially. 5.56 is loaded to higher pressures. And ammunition for bolt actions tend to allow higher charges.

Just because it is in a manual, doesn't mean it is safe for YOUR gun.

 

[Franklin]

My old MCR 3rd edition for RL-15 55 grain lists
Start 25.0 gn at 3040 fps
Max 26.5 at 3342 fps

could be a different bullet or redesigned. ogive could be shapped differently changing the seating depth and length therefore changing cartrige pressures.

 

[Pinecone]

It also seems to me, that later manuals have gotten a bit more conservative in their Max loads.

 

[spank308]

If you pull a post from the past I asked for the same reload question. I believe i tried 24 grains and had high pressure signs in my 16 in barrel ar. I would start at 23 grains and start there.

 

[Robert]

If you pull a post from the past I asked for the same reload question. I believe i tried 24 grains and had high pressure signs in my 16 in barrel ar. I would start at 23 grains and start there.

Yep, I'm going to start @ 23 should be a ~10% reduction for the lowest load, and will work up from that.

Thanks Guys!