I've shot them and no issue then reloaded them and had 2 open hard. Posted on other forum last night I took that ring down on a couple cases and headspaced measured. 001 to .0005 difference so not sure it's a huge thing. I don't like it but they work if have to use them. I separated all mine and will keep them separate and run some tests with same handloads to see if it effects anything performance wise
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Wonder if its just Sako/Tikka production capacity being tied up like Lapua in .Mil ?
IIRC Hornday is loading at 2,950 for 175s based on current spec
CIP spec is most likely going to be the same as SAAMI.
Posted on rokslide as well, but anybody else seeing pressure issues on the factory eldx? On my once fired brass I’m seeing a ring that looks like the beginning of case head separation. I can’t feel anything inside the case that would indicate an issue. Is this the ring you mentioned @Schw15 ? Also seeing ejector marks on several pieces. None of these pieces have been run through a sizing die, only a decapping die. Is this a chamber issue or overpressured factory ammo?
No it's not the ring I was talking about. It was on the bottom of the case and it was on outter part on brass but doesn't seem to effect anything and hornady said that is there new brass making process. As far as the 175 eldx I never shot any and unfortunately i actually just sold out of the 7 prc stuff to free up some cash for the nightforce challenge. But the 7 prc has great promise specially with handloads. The ammo looks a little hot but those rings on the cases usually show up after you full length resize the brass shows where the die stops on case
Yeah if these had been resized then I wouldn’t be questioning it. These haven’t been run through the die yet though. This is how they came out of the rifle
.534 at the ring, .530 just below it, right before the case head. Same locations on unfired brass is .527 and .529 respectively
ETA: measurement at the shoulder/body junction is .518 on fired and .514 on unfired
Carbonsix Tikka prefit
ETA: and the ring is right around the .26 mark. So pretty close to where you mentioned
Maybe so. Not sure which reamer Carbonsix uses
6.5 PRC Dies not sizing enough
Hey guys, My 6.5 PRC dies are not sizing the base enough. The issue became noticeable on the third firing with ADG brass. My 3x fired cases measure .53415 near the .200 line. My Hornady die sizes down to .53240, and Hornady claims their spec is .532 which I think is chamber spec? I talked with...
www.longrangeonly.com
Read that thread
Posting the SAAMi spec pdf for 7MM PRC
Helluva thread but it sounds very similar to what I’m seeing. Out of curiosity I ran 2 pieces through the FL Hornady sizer and bumped the shoulders back .002. The ring on both is measuring .531 and the shoulder/body junction is showing .516
Could it possibly be where solid case head transitions to the case walls? You get some flex there at the "web" upon firing. I doubt it's over expanding in saami chamber. Virgin brass should measure 529, fired 530-531 max, sized should get you to 530 or less for chamber clearance. This is typical of soft Hdy brass. Been experienced in 65 and 300prc.
that’s where it appears to be. I’m getting .534 and the Hornady sizer brings it to .531. Unfired brass is measuring .529.
So first time reloading for the PRC... what are 'clicker' issues, and are you saying I will have them with those measurements?
What is your fired brass vs sized brass. Clickers are a huge plague for any caliber now with thicker brass. But basically the die doesn't size the fired case enough and then when opening bolt at the top your primary exacting kicks In and pops open with a click. My prc was .5305 fired and .529 sized
Clickers are where the base is too big and swells in the chamber and when the actions primary extraction frees it the bolt handle clicks up instead of going smoothly.
the clickers video is down the page a bit, the chamber and die fit video is a good one that sorta addresses it as well
Videos | wheeleraccuracy
www.wheeleraccuracy.com
Thanks guys, I will take a look at the video. Learn something new everyday. So is this a brass issue, a chamber issue, or a sizer issue?
OK, that video was a good explanation.
I could tell I was going to have it with the barrel not on the action. This is an AXSR and I had the barrel off. The brass has already been sized and bumped back 2 thou. Brass sticks in the chamber and requires just a bit of effort to pull out. With the barrel on, feeding the brass into the chamber requires more effort than usual.
Barrel was chambered by Blue Mountain Precision.
So AW's explanation in the video made it sound like it is usually a sizing die issue. Assuming the AW2 reamer addresses this?
I could tell I was going to have it with the barrel not on the action. This is an AXSR and I had the barrel off. The brass has already been sized and bumped back 2 thou. Brass sticks in the chamber and requires just a bit of effort to pull out. With the barrel on, feeding the brass into the chamber requires more effort than usual.
Barrel was chambered by Blue Mountain Precision.
So AW's explanation in the video made it sound like it is usually a sizing die issue. Assuming the AW2 reamer addresses this?
And another stupid question I guess... are the rings a visible indicator of where the brass has swelled? Save to use or no?
The Hornady dies I used resized enough for no clickers but the 7 prc aw reamer would be an easy for sure fix. Short action customs makes a die to prevent clickers but not sure if it works. Might try another die or send it off specially if your taking it to nightforce challenge.
If fired is 534, chamber is likely 535 with the spring back. 531 sized should be good to go. If your chamber is saami spec, its way oversized at 535. Call barrel manufacturer and ask for reamer print and maker. Jgs makes in spec reamers 99% of time, everyone else is hit and miss. Or the barrel was dialed in poorly, or they had a bad reamer fixture causing it to walk. Lot of things.......or its AW2 spec with 535 as previously mentioned and all is well.
I had a 6.5x55 improved chamber that was giving me clickers after a couple reloads. I had a set of custom whidden dies made after the clickers showed up and sent in 4x fired brass. The new custom dies still didn't help. Would still get clickers. My opinion its a chamber issue. Just too tight in the case head/web area. Looking at the original reamer print and compared it to other 6.5x55AI, the chamber was definitely too tight in the web area compared to other AI reamer prints I researched for the swede. Looking at reamer prints of the 6.5 prc, 300, prc and 7 prc, and seems like Hornady went a little tight on the chamber measurements in the web. It's probably fine for hornady brass. But I can see why Alex Wheeler made an updated AW2 reamer to solve these clicker issues with Lapua brass. It doesn't need much. The sammi reamer only probably nees another 1.5 thousands of diameter in the rear of the chamber. OP, when peterson starts offering 7 prc brass, you may see the ring go away with their brass, since their brass runs a little thicker like lapua. Your measurements still seem a little on the big side but sounds like it's still with in sammi spec.
Thanks everyone, I have an email into Alex Wheeler to see if his reamer can help my situation out.
FYI, I sent an email to Forster asking when they'd have dies in 7mm PRC. They wrote back and said they expect to have them by April of this year.
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