Thread: X-TREME 223 55gr FMJ. Anyone tried these?

Originally Posted by Simon

Hi Greenie.
Make sure you do work your loads up with the RG brass as the capacity of this brass does make a big difference to pressures.
How much you ask.

Today I shot some 55g X-treme's from some FC brass with 26.5 g of CFE 223 powder. Velocity was 2850 fps from a 14.5" barrel.
I shot some 55g Hornady's that I loaded some time back in RG brass with a load of 26g of CFE 223 powder. From a 14.5" barrel they were going 3050 fps. This is a HOT load.
Even though it was 0.5g less powder, velocity was 200fps faster and pressure was a lot higher.
Primers had a little flow around the hit so they were warm.
With a muzzle brake on my 14.5" upper, it was very loud and the muzzle blast was impressive.

I have just grabbed some of the 55g X-treme projectiles and want to load them into RG brass firing from a 16" 1:7 barrel...go for 25.5g of CFE223 do you think?

Also, I nee to find a cheap (NEW) cronograph..any recommendations?

Cheers

Hey Greenie, with the RG brass just make sure you start a bit lower as it definitely has reduced capacity. I did some starting loads from the ADI manual using AR2206H with a 65gr Gameking think it was 23.0gr and I got instant cratered primers. Never used CFE223 but make sure you are about 5% below book min to start.

K

Cheers

Hi Greenie.
I have used not loaded CFE223 in RG brass as yet but have loaded it using FNB which is similar.
55 X-treme
26.5gn CFE223
56.6mm Over All Length
CCI 400 Small rifle Primers.

Out of a 14.5" barrel got the following velocities
2773, 2824, 2802, 2800, 2780, 2825, 2798, 2801, 2821.

A load of 25.5gn should be ok but check the primers.
You need to get a chrony.
I use one of these.
Gunsmithing &Reloading Tools - Shooting Chrony - Beta, Chronographs

Originally Posted by Simon

Hi Greenie.
I have used not loaded CFE223 in RG brass as yet but have loaded it using FNB which is similar.
55 X-treme
26.5gn CFE223
56.6mm Over All Length
CCI 400 Small rifle Primers.

Out of a 14.5" barrel got the following velocities
2773, 2824, 2802, 2800, 2780, 2825, 2798, 2801, 2821.

A load of 25.5gn should be ok but check the primers.
You need to get a chrony.
I use one of these.
Gunsmithing &Reloading Tools - Shooting Chrony - Beta, Chronographs

Cheers...Yeah, just grabbed one off of Julian today funnily enough. Re the load, that sounds ok..doesn't sound hot, I'll be using Remmington 7 1/2 primers which should work well.

I'll let you know.


Cheers