6.5 PRC Dies not sizing enough

Ladd

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I guess I should have stated my question better and forgive me if its a stupid question. First firing was on virgin adg brass. If my brass wasn't fully expanded to the chamber and I full length size bumping the shoulder .002 for the second firing, will that measurement change again on the third firing once the brass fully expands to the chamber? If I neck size only for the second firing letting the brass fully expand, then full lengh size on the following reloads... would my .002 bump remain the same from that point forward? I guess I'm just tryng not to adjust my dies every reload cycle to get the appropriate bump. Maybe I'm overthinking the whole thing.
I always full length size brass every time I size it but I don't shoulder bump until necessary. For my 300 PRC that was 3x brass. Checking 3x brass yesterday, the bolt would close but only with resistance and that was with the firing pin and ejector plunger removed.

Shoulder bump should not be a concern until the bolt tells you.

 

Choovhntr

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Ok thanks Ladd. That answers my question. Might be worth buying a fl bushing die now instead of using the separate body and neck dies that I have now.
 

Ladd

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Ok thanks Ladd. That answers my question. Might be worth buying a fl bushing die now instead of using the separate body and neck dies that I have now.
You don’t need to.
 

Choovhntr

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I apologize for all the questions through this process but I’m still pretty green to the whole reloading game and am stumped again. So I fl sized 10 pieces of 1x fired brass with a body die not bumping the shoulder. I also neck sized everything. Went to check the headspace with the firing pin and plunger removed. I placed the case so it was supported by the extractor and there is resistance the last 1/8” or so when chambering the round. The bolt had little to no resistance closing down. Same thing on extraction. The case seems to have slight resistance the first 1/8” coming out of the chamber. I chambered a factory round and that resistance wasn’t there. I took one of the cases and bumped the shoulder back another .002 using the next size shell holder. Same thing. Is this normal? It seems like the case is tight in the chamber close to the head, but isn’t that what the new reamer was supposed to fix? Any help would be greatly appreciated.
 

parshal

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That spot is exactly where most PRC don’t size enough.
 

Choovhntr

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I just had it reamed out with the aw-2 reamer though. Haven’t put a round through it yet since I got it back from the smith. I’m completely stumped and frustrated. I guess I could load these up starting with a few grains lighter charge and see what happens, but am worried I may get stuck cases.
 

parshal

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I’d say you need to size the body further down. Try a lighter charge like you said on a couple of the tighter fitting ones. You’ll probably be just fine.
 

Ladd

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I apologize for all the questions through this process but I’m still pretty green to the whole reloading game and am stumped again. So I fl sized 10 pieces of 1x fired brass with a body die not bumping the shoulder. I also neck sized everything. Went to check the headspace with the firing pin and plunger removed. I placed the case so it was supported by the extractor and there is resistance the last 1/8” or so when chambering the round. The bolt had little to no resistance closing down. Same thing on extraction. The case seems to have slight resistance the first 1/8” coming out of the chamber. I chambered a factory round and that resistance wasn’t there. I took one of the cases and bumped the shoulder back another .002 using the next size shell holder. Same thing. Is this normal? It seems like the case is tight in the chamber close to the head, but isn’t that what the new reamer was supposed to fix? Any help would be greatly appreciated.
The shoulder has not stretched enough in 1X brass to warrant sizing it back any. Clean your chamber really good. Make sure the lug area of the action is clean. Often times gunk settles in there and you don’t know it. Apply gun grease to the back side of the bolt lugs after cleaning.

Your comments makes me believe you are using the Redding competition die set and shell holder set. Please confirm if this is true. Sounds like you are so the below will make sense.

When you size brass in the body die using the .010 competition shell holder, make sure the press has a firm closure on the bottom of the die. Leave the press handle at the bottom of the stroke for a few seconds to reduce spring back. Run the brass up into the die one or two more times as well.

What powder and bullet are you loading and what is the charge weight you have been using?
 
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Choovhntr

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Yes that is correct. I am using the Redding comp dies set with the shell holders. I set the dies up just as suggested to get cam over. Load consisted of 59.1 gr N565 with the 156 Berger’s in ADG brass and fed 210 primers. Velocity is 2990-3007. Pressure was at 59.7 gr.
 

Ladd

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Yes that is correct. I am using the Redding comp dies set with the shell holders. I set the dies up just as suggested to get cam over. Load consisted of 59.1 gr N565 with the 156 Berger’s in ADG brass and fed 210 primers. Velocity is 2990-3007. Pressure was at 59.7 gr.
Are you happy with that load? It is where you want it? It is close to pressure still and you may need to back it down some.
 

AZHTR

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Leave the press handle at the bottom of the stroke for a few seconds to reduce spring back. Run the brass up into the die one or two more times as well.
What Ladd said ^^^^^^. This is what I did when reloading for a friend’s PRC and is now in my reloading process for his rifle. 👍
 

Choovhntr

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Yeah I’m very happy with it at .010 off lands. I was thinking that once the virgin brass formed I’d have to back off to 58.5 or so, which seems to be on par with what others are seeing. Although I’m quickly finding out that I don’t know as much as I thought I did hahaha. There is no chance I ruined the brass is there? I just find it strange that the brass fired from the original reamer is still tight near the case head after the chamber was opened up with the new reamer.
 

Ladd

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Yeah I’m very happy with it at .010 off lands. I was thinking that once the virgin brass formed I’d have to back off to 58.5 or so, which seems to be on par with what others are seeing. Although I’m quickly finding out that I don’t know as much as I thought I did hahaha. There is no chance I ruined the brass is there? I just find it strange that the brass fired from the original reamer is still tight near the case head after the chamber was opened up with the new reamer.
The first thing to go is the primer pocket. If they are good, the brass is. They will go fast with maxed or near max loads. There should be no other reason to get new brass at this point. Try pushing the bass through the die 2x or more and see how that goes.

Dropping your load will help if nothing else. I can get my 6.5 max shooting the 156 up to 3100 fps but I didn’t like the loose primer pockets nor the click so my load is in the low 2900s. Accurate, repeatable and with good brass life.
 

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I have one but it goes out today for a time. When it comes back you can borrow it.
@Ladd Do you have that reamer back yet? Looks like you're fresh off a trip to the dark continent...Let me know if you're still interested in loaning the reamer.

Thanks
 

Ladd

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@Ladd Do you have that reamer back yet? Looks like you're fresh off a trip to the dark continent...Let me know if you're still interested in loaning the reamer.

Thanks
I have both but I am out of the rental game. Sorry.
 

JBahr

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I have both but I am out of the rental game. Sorry.
Appreciate the quick response! Anyone else willing to loan/rent the 6.5 PRC AW2 reamer. I'm located in West Denver. Willing to put down a deposit to ensure return/replacement should damage or loss occur to the tool.

Thanks in advance!
 

Straightshooter1

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My 6.5 PRC Lapua brass measurement at the .200 spot:

New: .5295"

Fired (8x): .5325"

Sized (Forster FLS): .5320"

Barrel: 26" Preferred Barrel Blanks drop in

So, no problems with this brass after 8 firings and using loads that are stout.
 
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FURMAN

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I am just a small town redneck who relies on anecdotal evidence just as much as imperial, scientific data. The only cartridges I have consistently had clickers with, even at low charges, are the PRC cases. I don't care who is to blame but the facts are the facts. I love all three cases but they are not perfect. If building a rifle I will just use Alex's reamer for these cases.
 

Broz

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@Broz, I recommend we rewind this thread and delete posts #519 on.
I agree. This is a great thread and has helped countless people fix the issue with their PRC chambers. It deserves to stay on track to precisely the topic of how to fix the tight chamber issue.

Edit: Clean up in isle 6 complete. Thank you all for returning to the topic of how to fix the clickers and hard extraction of the PRC cartridges.
 
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moto450r

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Lots of great info in this thread. I believe my ridge line will need to getbfixed
 

Brendan

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I've got a new Ridgeline FFT in 6.5 PRC that just came in. Anyone have experience with the newer ridgelines if they need it?

Trying to debate if I just go ahead and order a reamer now, or try to find a smith who has one and will do it for me. I'm in the NorthEast, so probably not local to anyone here...
 

Broz

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I've got a new Ridgeline FFT in 6.5 PRC that just came in. Anyone have experience with the newer ridgelines if they need it?

Trying to debate if I just go ahead and order a reamer now, or try to find a smith who has one and will do it for me. I'm in the NorthEast, so probably not local to anyone here...
For legal reasons I assume their legal team has them bound to the SAAMI reamer. So you will likely need it no matter what factory rifle you would choose. Just know it will likely not show up until the 3rd or so loading. If you want, you could keep some fresh brass on hand incase you need to buy time to get a reamer. Or, take 3 to 5 pcs of brass and keep loading them to test. If the issue doesn't show by the 5th firing I say you are good.
 

Hiwayman92

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Do any of you guys have a reamer and T handle for rent? I don’t really want to buy one to use for 10 seconds.


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Broz

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Do any of you guys have a reamer and T handle for rent? I don’t really want to buy one to use for 10 seconds.


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Where are you located? I will not loan a reamer, but if you are close enough to drive here I would do it for you. I am assuming you are talking 6.5 PRC?
 

Hiwayman92

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I’m in Southwest Wyoming Jeff, quite a hike from you I’m afraid. However, yes I am talking about a 6.5 PRC reamer.


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