7 FCP, a cartridge developed specifically for the F Class Scene...

[antunRC]

All N555 powder
CCI200
No turn neck reamer

Fireforming 184gr
54.8gr - 2802fps
56gr - 2855fps

2nd firing 180gr
57.6gr - 2931fps

 

[ARIVERAT]

Here is fire forming for me. This is with brass right out of the Lapua box, necked up and loaded to .003" off the lands. This isn't a 5 shot group, the 20 shot groups show the whole picture in my opinion...





View attachment 1461422

Bryan, Are you shooting a turn neck? Simply turning necks, expanding and then fire forming?

 

[Bryan Blake]

I fire form, then I turn. So to start I just expand to 7mm, then 30 cal, then FL size to make a false shoulder. I only do a false shoulder if I am ff in a competition. If I am FF just to FF, then I just expand to 7mm and leave the bullet long to jam the bullet for a headspace. You can turn first but anytime you turn prior to shooting any brass in any chamber, the brass will flow and create thick and thin spots in unpredicted places. Yes it can work, but turning after FF pushes and flows that brass to where it is going to naturally go, then you can turn and have the brass last longer and basically eliminate any donut if you ID and OD turn for the life of the brass.

 

[CA_Shooter]

56.5 of 4831 ff shoots good for fire forming

54 works good for 4350

55 works good with n555

I have tested these at 1000 yards fire forming and it will shoot half moa doing it.

Hi @Bryan Blake - which bullet are these fireform charges with?

I'm looking to fireform with 180 berger hybrids.

Thanks

 

[antunRC]

This is for 180gr hybrid.
I was using N555 55gr

 

[antunRC]

I'm not sure if this is a good barrel or reloading process, but I went through 86 rounds in one day, and my ES was 15, SD 3.64.

Never had that good numbers.
Rifle was shooting great! 57.6gr N555 180gr hybrid

 

[Sandstorm]

I think its a bit of both...Looks good from here antunRC

 

[Bryan Blake]

I'm not sure if this is a good barrel or reloading process, but I went through 86 rounds in one day, and my ES was 15, SD 3.64.

Never had that good numbers.
Rifle was shooting great! 57.6gr N555 180gr hybrid

Looks good!

 

[Airborne-350G]

I fire form, then I turn. So to start I just expand to 7mm, then 30 cal, then FL size to make a false shoulder. I only do a false shoulder if I am ff in a competition. If I am FF just to FF, then I just expand to 7mm and leave the bullet long to jam the bullet for a headspace. You can turn first but anytime you turn prior to shooting any brass in any chamber, the brass will flow and create thick and thin spots in unpredicted places. Yes it can work, but turning after FF pushes and flows that brass to where it is going to naturally go, then you can turn and have the brass last longer and basically eliminate any donut if you ID and OD turn for the life of the brass.

Do you use a different barrel to FF when you turn after FF?

 

[CA_Shooter]

What kind of barrel life are you guys seeing at your given velocity?

 

[EEP]

I’ve got some Reloder 17 I’m thinking of using for fire forming. Anybody tried any R17 in the FCP?

 

[G7BC]

Granted , this is not the same cartridge but maybe similar enough that some folks will find it interesting or helpful when it comes to the FCP . Here are some results of a 7-6.5 PRCW pressure test that was done by Frank at Bartlien with the help of the fellas at Hornady...

7/6.5PRC Pressure and Velocity ammo test

So it should go without saying but I will say it anyways. Lot of powder variances, bullet lot variances from lot to lot and not to mention bullet diameters, primers, brass lot etc... all can change the pressure and velocities. Be careful with what you do! Don't forget.... temperature, humidity...

forum.accurateshooter.com

 

[Titan]

I’ve got some Reloder 17 I’m thinking of using for fire forming. Anybody tried any R17 in the FCP?

52 2888
51 2850
50 2779
49 2756
48 2700

I used 50.2 in a old used 30 inch brux re chambered for fire forming, this produced 2810 avg over strings of 30 single digit SDs. Go slowly with RL 17 and it is okay, if you push it it will go from mild to wild quickly. Accuracy was not acceptable for match use, but the load produced enough pressure to form the case.

 

[Sandstorm]

Go slowly with RL 17

I would not be using this in the heat of summer in Competition. Actually I would not be using
it at all when there are many fine and accurate powders for this round. Like the N555 that shoots incredibly well. ( I understand your only fireforming )

 

[EEP]

Glad to see some life to this thread. I don’t have FB and feel like I’m missing out on the 7FCP news and updates.

I can hardly wait to get mine finished.

 

[Bc'z]

Glad to see some life to this thread. I don’t have FB and feel like I’m missing out on the 7FCP news and updates.

I can hardly wait to get mine finished.

Is this for your Cerus rifle being built?

 

[EEP]

Is this for your Cerus rifle being built?

Yes sir!

 

[Fire Dog]

Yes sir!

How did you ever get a response from CERUS...??
Just gave up on them {as a number off other folks that I know and some former customers} due lack of any response to email inquiry. Even Bryan Blake said that he was difficult to deal with... {:~/
I began to think that that the site had become a Zombie due to a C-19 death.. or some sort of personal disaster.
Went for a McMillan Kestros ZR which they were more than happy to build for me and deliver within 4 months...
As much as I would love to own one of the beautiful stocks that come from CERUS and even be willing to wait a year {or more} for delivery and bare the cost {about 2-3 times the cost of the ZR} the inability to get any response, Yes/No from them just put me off!

 

[EEP]

How did you ever get a response from CERUS...??
Just gave up on them {as a number off other folks that I know and some former customers} due lack of any response to email inquiry. Even Bryan Blake said that he was difficult to deal with... {:~/
I began to think that that the site had become a Zombie due to a C-19 death.. or some sort of personal disaster.
Went for a McMillan Kestros ZR which they were more than happy to build for me and deliver within 4 months...
As much as I would love to own one of the beautiful stocks that come from CERUS and even be willing to wait a year {or more} for delivery and bare the cost {about 2-3 times the cost of the ZR} the inability to get any response, Yes/No from them just put me off!

I actually saw an ad here in the classifieds with one for sale from Will McClosky that someone ordered but didn’t take. It wasn’t exactly what I wanted but is a really nice looking stock so I grabbed it within 20 minutes of being posted. Just luck I guess. This is my 2nd Cerus stock and hope it’s as good as the first one.

 

[antunRC]

Did anyone tried N565 in 7FCP? Thanks!