25 prc issue

[Jakeweb09]

Did you check twist rate?

Just checked it. Advertised as 7 twist. Actual is 7 1/8"

 

[Seabeeken]

I have several pbb barrels and they all shoot .5 or better. Getting ready to order a 6AI from them. I assume you have checked the bedding for an issue. I had an issue once where a redding die set was inducing .010 runout And rifle wouldnt shoot better than 1". They had to rework the seating die neck area and replaced the seating stem. The rifle then would shoot .5 but runout was still .0015-.002.

 

[Jakeweb09]

I have several pbb barrels and they all shoot .5 or better. Getting ready to order a 6AI from them. I assume you have checked the bedding for an issue. I had an issue once where a redding die set was inducing .010 runout And rifle wouldnt shoot better than 1". They had to rework the seating die neck area and replaced the seating stem. The rifle then would shoot .5 but runout was still .0015-.002.

It's in an xlr element 4.0. I've got a TS customs 6.5 prc bartlein for it and that thing shoots .2-.5 regularly using the same dies and a different bushing obviously

 

[lancetkenyon]

Try swapping to a known good scope?

 

[Jakeweb09]

Try swapping to a known good scope?

Oh yeah. I've swapped from a zco 527 to a zco 420. Same results

 

[lancetkenyon]

Check the muzzle/crown for a ding?

 

[lancetkenyon]

Maybe your rifle just doesn't like the 135. Try the 133. Or the new Black Hole 130 ULD or 145 ULD?

 

[Jakeweb09]

Maybe your rifle just doesn't like the 135. Try the 133. Or the new Black Hole 145 ULD?

B lot is sending me some 133s and 131s. Hopefully it doesn't prefer 131s lol.
I was just looking at the 145s, any experience?

 

[lancetkenyon]

B lot is sending me some 133s and 131s. Hopefully it doesn't prefer 131s lol.
I was just looking at the 145s, any experience?

No, not yet.

 

[skipglo]

As stated above...choose two or even three different bullets first.....I don't see many people these days looking for costly solutions after just trying 1 bullet.......and there's that saying again....( and it's best if you kinda say it with a whine.) "My Gun Doesn't like that bullet"

 

[med358-boise]

I would stop looking at little things and start looking at big things. In my experience little things will shrink groups by 1/2" maybe a little more and give consistency. You seem to have a "big thing" problem.

1) Are the stock screws torqued down (as in tight, I don't mean are they 5 lbs off from what you thought they were), you said you changed scope did you check that the base screws are tight.
2) Is there a crown problem
3) Did you have some type of "bedding/fit" problem occur
4) Try a different bullet, significantly different in weight, like in the 115 to 125 range
5) Use the OCW load devlopment method

 

[John215]

Just my 2 cents brother, I've never seen that kind of variance in a custom barrel that was from anything other than the barrel itself. Good luck getting it figured out and dialed in.

 

[spladi]

I'd turn the necks on your FF brass to get something around .002/.003-inch NK. tension or less if you like it minimal.

 

[LAGS1573]

Hmmm? While you are spinning your 135s around 308,000 rpm, they are in a comfortable range for stabilizing that bullet.
Have you cleaned and broken in the barrel properly...I don't mean some exhaustive 100 round break-in procedure, but those first 10 to 20 rounds down your tube will deposit a lot of carbon that needs to be removed.
If cleaning isn't the issue and everything is right and tight on your rifle, you might consider slowing the velocity down to maybe 2800 fps and work up from there. Is this the first barrel you have had on the action?