6XC ground truth as of Jan 2020?

[TAJ45]

May I infer that Mr. TUBB'S reamer's spec is for the .465?

 

[tclaunch]

I would bet, thats the case.

 

[Boatschool02]

May I infer that Mr. TUBB'S reamer's spec is for the .465?

Hence why I started the thread.
Many thanks to @tclaunch.
Both Manson reamers (CIP and Tubb official are 0.4700 at the base)

Just trying to get ground truth on which brass and dies are new vs old. I can understand sunk cost and pride, etc. but am disappointed to hear that Peterson brass is not based on the 0.4714 spec shared across most other cases for this bolt face.

 

[tomswede]

Have to admit that I have not measured my Norma or Peterson brass, but both work in my chamber. Have shot some scores that I’m really happy with using new Peterson brass.

 

[Hoot]

Slight segue but related. Approximately a year and a half ago, I bought 300 of the (assumed) 1st generation Peterson 6XC SRP brass. Though it was reputed to have issues, at $30.00 per hundred, I couldn't resist. As predicted, I experienced stiff bolt lifts and swipes as soon as I got my Hornady 108 ELD-M bullets up to 2850 and beyond using H4350, but boy did they shoot nice. After struggling trying to tame the apparent pressure issue all last summer, last week I decided to shelve the remainders in advance of the 2020 shooting season up here and order some (assumed) latest generation ones from Tubbs. They arrived this afternoon. I just got done A/B'ing them against the problematic (assumed) 1st gen ones I got. Same average weight (168.7 with a dead primer in them), same neck thickness (.015) same shoulder datum location (1.506), slightly different average case length (1st=1.893 Avg, New =1.900 Avg untrimmed), same web diameter .468-.4685 but most importantly same case capacity of H2O (48.4 @ 20C). I haven't contacted SSS yet to inquire as to this new brass' pedigree, but either I didn't get 1st gen for $30/100 a year and a half ago or SSS is still selling it for $69/100. Doesn't make sense, given their reputation. Of greater concern is I doubt that I will improve my stiff bolt lift / swipes by simply changing to the (assumed) new brass.

For point of reference, fired brass datum grows to 1.509 = +.003 so I doubt my pressure is due to a short chamber.

Any members who shoot the latest iteration of Peterson SRP brass and have measured their unfired H2O capacity?

Thanks,

Hoot

 

[tclaunch]

Lets add dies to the conversation. Can anyone tell me the sized case at the .200" using various brand dies. I would especially like to know about the Redding FL S-Type 6XC die, not the XC II. I had JGS send over some reamer prints, and the .200" line is as mentioned .470". My hopes are the Redding dies are close to .467" .468". Sized case should be .468" to .4695". I`ll not travel this road again without die numbers. I called Redding yesterday, and their new policy of not giving out internal dimensions about pissed me off. as they always have in the past.

 

[J.d. Popkes]

Slight segue but related. Approximately a year and a half ago, I bought 300 of the (assumed) 1st generation Peterson 6XC SRP brass. Though it was reputed to have issues, at $30.00 per hundred, I couldn't resist. As predicted, I experienced stiff bolt lifts and swipes as soon as I got my Hornady 108 ELD-M bullets up to 2850 and beyond using H4350, but boy did they shoot nice. After struggling trying to tame the apparent pressure issue all last summer, last week I decided to shelve the remainders in advance of the 2020 shooting season up here and order some (assumed) latest generation ones from Tubbs. They arrived this afternoon. I just got done A/B'ing them against the problematic (assumed) 1st gen ones I got. Same average weight (168.7 with a dead primer in them), same neck thickness (.015) same shoulder datum location (1.506), slightly different average case length (1st=1.893 Avg, New =1.900 Avg untrimmed), same web diameter .468-.4685 but most importantly same case capacity of H2O (48.4 @ 20C). I haven't contacted SSS yet to inquire as to this new brass' pedigree, but either I didn't get 1st gen for $30/100 a year and a half ago or SSS is still selling it for $69/100. Doesn't make sense, given their reputation. Of greater concern is I doubt that I will improve my stiff bolt lift / swipes by simply changing to the (assumed) new brass.

For point of reference, fired brass datum grows to 1.509 = +.003 so I doubt my pressure is due to a short chamber.

Any members who shoot the latest iteration of Peterson SRP brass and have measured their unfired H2O capacity?

Thanks,

Hoot

What reamer was used on your chamber? I bought my Peterson srp from sss spring of 19, and more recently. Never experienced this. Did you experience the pressure on new brass as well as multiple fired? Reason I ask is I’m curious if you are seated in the donut. I never have poured water in my brass so I don’t know how much they hold. I know that velocity is perfectly consistent and no vertical at 600 yds. No pressure signs. I’m not gonna break any speed record but I just assume it’s a slow bbl. maybe because it’s a 7 twist.236?? Who knows but I’d take another hundred of my experiences with the xc. Like I said earlier in this thread, it’s been “BR easy”.

 

[tclaunch]

I went ahead and ordered 100 of the Peterson brass. My reamer is the XCII version, but have not bought a FL die yet.

 

[DTubb]

I typically shoot my 6XC's over 3150fps with 115 DTACs and reload the brass with snug primer pockets. ALL of the 6XC Peterson brass sold by SSS was never any part of the 1st batch that Peterson ran.
I told them to scrap the 1st batch.. and they sold it to grafs. What a f%$*mess they created IMO..

If you know anything about 6XC resize dies and peruse what is offered there is NO comparison between SSS 6XC S7 tool steel resize die with integral neck shoulder bushings. Every other 6XC resize die(s) are like comparing a "Volkswagon to a Ferrari" (Redding employee comparison years ago at the SHot SHow)
But what do I know..

 

[urbanrifleman]

Drops the mic... hahahaha

 

[Hoot]

What reamer was used on your chamber? I bought my Peterson srp from sss spring of 19, and more recently. Never experienced this. Did you experience the pressure on new brass as well as multiple fired? Reason I ask is I’m curious if you are seated in the donut. I never have poured water in my brass so I don’t know how much they hold. I know that velocity is perfectly consistent and no vertical at 600 yds. No pressure signs. I’m not gonna break any speed record but I just assume it’s a slow bbl. maybe because it’s a 7 twist.236?? Who knows but I’d take another hundred of my experiences with the xc. Like I said earlier in this thread, it’s been “BR easy”.

To be honest, I don't know. My barrel is a 26" Criterion Remage. Fired cases wind up with a .274 OD neck, so I'd guess its reamed to .275 FWIW (6XC-II?). I have never cast the chamber though I have the means. I experience what appears to be pressure issues with both new and resized brass, as soon as I hit moderate speeds or above. I have avoided seating into the donut but I can sure feel when I run into it.

Some of my issues with neck tension are my own doing from pin tumbling them spic-n-span. I have the means to shot plate my bullets using either Moly, WS2 or HBN. That was going to be the direction I headed off into once spring arrives in 4 months up here. Since my chamber neck is quite generous, I've been playing with different sizing bushings to get the perceived tension just right with a minimum dimensional change to reduce working them too much. Its a fine line with ultra clean necks and unplated bullets. During the long MN winter, I'm experimenting so I'll have some course of action to pursue come spring.

Dave, thanks for clarifying the brass pedigree. I guess those first three bags were after they improved the case dimensions. Given my struggles, I assumed (until yesterday) that they were the source of my troubles. Back to the drawing board...

Hoot

 

[J.d. Popkes]

Criterion will gladly send ya the reamer print. But I’m guessing that isn’t the problem.

 

[Hoot]

Criterion will gladly send ya the reamer print. But I’m guessing that isn’t the problem.

I emailed them almost a month ago for one. No acknowledgement that they even got the email.

Hoot

 

[ballisticxlr]

I have 3 of them. All done with a tubb spec reamer. They're all easy as hell to deal with. Did the norma brass but recently switched to peterson SRP. must use thick cup primers or they pierce at the drop of a hat, any hat. Otherwise, it's super efficient and easy to load for.

 

[J.d. Popkes]

I emailed them almost a month ago for one. No acknowledgement that they even got the email.

Hoot

I called. They instantly emailed several prints. They were all ptg reamers. Do then I called ptg. Dave Kiff answered and I spoke to him for an hour. Must have been my lucky day?? I got my questions answered.

 

[Hoot]

I called. They instantly emailed several prints. They were all ptg reamers. So then I called ptg. Dave Kiff answered and I spoke to him for an hour. Must have been my lucky day?? I got my questions answered.

When you say "several", I take it that there's no telling which PTG reamer mine was done with, save casting the chamber? I've got a few months to kill and some cerrosafe. I'll do a cast.

In the mean time, you wanna share any of those "answers"?

Hoot

 

[J.d. Popkes]

I got several different chamberings so I got those.

the “answers” I got were in the list I gave earlier in my post. That’s what we built and the components we used. I’d look at chambering specs and dies used.

Could be any number of little issues not specific to the 6xc. As far as why mine works, hell if I know. How’s a posi-track on a Plymouth work? It just does.

I have troubleshooting to do with several other rifles but it’s usually me.

good luck man!!

 

[tomswede]

I typically shoot my 6XC's over 3150fps with 115 DTACs and reload the brass with snug primer pockets. ALL of the 6XC Peterson brass sold by SSS was never any part of the 1st batch that Peterson ran.
I told them to scrap the 1st batch.. and they sold it to grafs. What a f%$*mess they created IMO..

If you know anything about 6XC resize dies and peruse what is offered there is NO comparison between SSS 6XC S7 tool steel resize die with integral neck shoulder bushings. Every other 6XC resize die(s) are like comparing a "Volkswagon to a Ferrari" (Redding employee comparison years ago at the SHot SHow)
But what do I know..

I have used the LRP brass from the 1st batch from Graf’s. My loads are mild and I have not had any issues. What is the problem? Seems to me that they are very similar to the Norma’s.

 

[spclark]

I have used the LRP brass from the 1st batch from Graf’s. My loads are mild and I have not had any issues.

I think you may have answered your own question there, friend....

All 6XC chambers are not created equal.

 

[tomswede]

I think you may have answered your own question there, friend....

All 6XC chambers are not created equal.

So they are soft like the Norma’s ( that seem to run a bit on the soft side, not like Federal but..). What I found was the bus brass was very uniform and for me yielded very good accuracy.