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

[Alex Wheeler]

So does the current FCP reamer have this Bore Rider freebore lead angle.

I have been studying some pt&g reamers with it, particularly the pt&g 7-6.5 PRCW bore Rider print.

The freebore lead angle length looks huge on it, like doubtful you'd ever have bullet touching lands. Maybe I'm reading it wrong.

PRCW is a 1 degree lead angle. It is not a bore rider throat. Totally different things.

 

[Sandstorm]

If Im not mistaken you can only get the 7FCP Reamer form Bryan Blake at F-Class products,
The 7-6.5PRC Reamer is made by many manufacturers to many different specs.
Alex,s design is the Oiginal 7PRCW and the others merely copies or variations of the Original.
Im thinking some folks are getting these mixed up...and please correct me if im wrong here Alex.

 

[rsp111]

PRCW is a 1 degree lead angle. It is not a bore rider throat. Totally different things.

Sorry guys, here is the link to the PT&G reamer that has references to PRCW and the bore rider feature, it does have some wheeler specs I guess.

7 - 6.5 Precision Rifle Cartridge (PRCW) Bore Rider Finish C

www.pacifictoolandgauge.com

Yes I know the 7PRCW well, I have one. I have been happy with it, but it does start to show issues after 3 firings that fellow FCP shooters are not having.

Anyway curious about this Bore Rider feature and if it's part of the current FCP reamer.

Would be interesting to see the FCP with the wheeler 1 degree angle.

 

[Alex Wheeler]

That is a bore rider/step throat/+p but its not my design.

 

[WSnyder]

Would be interesting to see the FCP with the wheeler 1 degree angle.

You do realize that the 1° was setup for a specific bullet and any other bullet used might not be optimal?

 

[rsp111]

You do realize that the 1° was setup for a specific bullet and any other bullet used might not be optimal?

Yes I know this, do you have any evidence it doesn't work with other bullets, also maybe I like the bullet it was setup for, maybe I want to shoot that specific bullet out of the FCP cartridge.

What else would you like to add?

 

[rsp111]

That is a bore rider/step throat/+p but its not my design.

I didn't think it was Alex. My questions have nothing to do with your design, it was more about this Bore Rider thing, I just happened to find it on this particular drawing.

 

[WSnyder]

What else would you like to add?

Nothing, sounds like you've got it all figured out.

 

[Sandstorm]

What else would you like to add?

Here we are trying to help..no need to get rude Sir.

 

[323]

Sorry guys, here is the link to the PT&G reamer that has references to PRCW and the bore rider feature, it does have some wheeler specs I guess.

7 - 6.5 Precision Rifle Cartridge (PRCW) Bore Rider Finish C

www.pacifictoolandgauge.com

Yes I know the 7PRCW well, I have one. I have been happy with it, but it does start to show issues after 3 firings that fellow FCP shooters are not having.

Anyway curious about this Bore Rider feature and if it's part of the current FCP reamer.

Would be interesting to see the FCP with the wheeler 1 degree angle.

Sorry guys, here is the link to the PT&G reamer that has references to PRCW and the bore rider feature, it does have some wheeler specs I guess.

7 - 6.5 Precision Rifle Cartridge (PRCW) Bore Rider Finish C

www.pacifictoolandgauge.com

Yes I know the 7PRCW well, I have one. I have been happy with it, but it does start to show issues after 3 firings that fellow FCP shooters are not having.

Anyway curious about this Bore Rider feature and if it's part of the current FCP reamer.

Would be interesting to see the FCP with the wheeler 1 degree angle.

What issues are you having after 3 firings? Clickers? What’s your load? I’m no gunsmith but the 7-6.5 prc-w I know of being used up here 5 of them have had all the chambers cut with a JGS reamer. Anyhow good luck, If you fcp route let us know how it shoots. Me I don’t want anything to do with fire forming cases ever again

 

[Bryan Blake]

2.420 with a Hornady comparator is touching with 180 hybrids. There is still plenty of bearing surface in the case. I shoot it only .003" off and have shipped ammo for matches and never had any move with only .001" tension on the neck.

Also for the guys commenting on fireforming, there has been scores shot up to 600-52x at 600 yards while fire forming the 7 FCP, so cant be too bad...

We created the 7 BSM, so no fire forming needed, uses Lapua brass and can run up to 3070 FPS with 180's also...

 

[rsp111]

What issues are you having after 3 firings? Clickers? What’s your load? I’m no gunsmith but the 7-6.5 prc-w I know of being used up here 5 of them have had all the chambers cut with a JGS reamer. Anyhow good luck, If you fcp route let us know how it shoots. Me I don’t want anything to do with fire forming cases ever again

I did start to have mild clickers, but that may have been due to the sizing die, my main issue now is with expanding, I get a good headspace sizing, then once I expand, it seems to create a false shoulder. I have tried pushing the shoulder back 10 thou but once it's expanded, will not fit in chamber. It's a no turn reamer.
I think the 30 degree shoulder seems to create a donut very fast and then expanding pushes it out and creates a false shoulder.
Anyway my buddy with the FCP does not have this issue or clickers. Yes the fire forming may suck, but like Blake says it's competitive while doing it. I use 565 which doesn't produce much pressure. I really committed to this cartridge and have over 2000 pieces, PRCW is out for me, so FCP it is.

 

[JLT]

I did start to have mild clickers, but that may have been due to the sizing die, my main issue now is with expanding, I get a good headspace sizing, then once I expand, it seems to create a false shoulder. I have tried pushing the shoulder back 10 thou but once it's expanded, will not fit in chamber. It's a no turn reamer.
I think the 30 degree shoulder seems to create a donut very fast and then expanding pushes it out and creates a false shoulder.
Anyway my buddy with the FCP does not have this issue or clickers. Yes the fire forming may suck, but like Blake says it's competitive while doing it. I use 565 which doesn't produce much pressure. I really committed to this cartridge and have over 2000 pieces, PRCW is out for me, so FCP it is.

Take a few cases and turn off the false shoulder. See if that resolves your chambering issue.

 

[rsp111]

Take a few cases and turn off the false shoulder. See if that resolves your chambering issue.

Yep it will, but I went no turn for a reason.

 

[JLT]

Yep it will, but I went no turn for a reason.

I get that, but turning the base of the neck may be one of only two solutions to your problem. The other is to stop using expander mandrels.

 

[Bryan Blake]

If you IDOD/AUTODOD the brass, even for the PRC brass, this will nearly eliminate all donuts from forming.

 

[rsp111]

Yes I could go the turn route, I get it. Currently don't want to go that route. I also believe that using a mandrel is the best way to control neck tension.
I never had these issues with my 284 Winchester, and my friend does not have these issues with the FCP, which I believe is due to the higher angle shoulder.
I do somewhat regret going down this PRC cartridge path, but I feel committed now, so I will try the no turn FCP, and if it sucks then maybe the 7LBB will be available, and if I still have issues maybe I'll give in and get them turned.

 

[Sandstorm]

other is to stop using expander mandrels.

Good plan in my book...but hey ya dont have to take my advise either.

 

[rsp111]

I sort of don't understand you fellas trying to steer me away from the FCP cartridge in a FCP Forum, do you have something against the 7 FCP?

 

[JLT]

I sort of don't understand you fellas trying to steer me away from the FCP cartridge in a FCP Forum, do you have something against the 7 FCP?

I don't see it that way. I see a number of folks trying to help you solve your problem.

The FCP, BBM and the SAUM are all peas in a pod from a case capacity standpoint. You may want to consider straight 7 SAUM. No forming-related donut issues there.

Let me know if you want to off-load some of the 7-6.5 brass.