22 creed new build

[jareese]

Finally getting the barrel broke in.
22 Creedmoor
Aero Precision Solus action
Preferred Barrel Blanks 24" Rem Varmint/Sendero contour 1:7 twist
Little B@st*rd Gen 1 brake profiled
KRG Bravo (still waiting on AG composite stock)
Built by me - JR Precision LLC.


74 grain tipped hammer hunter (all copper)
Average 3570 FPS (didn't note ES and SD, but single digit SD)
This is with RL-17 - I need to retest with a powder that I have more of and get more of.
All shot at 100 yards
Becoming promising, hopefully it gets a smidge better.

EDIT after looking at shooting log: group 1 ES/SD: 24.9/10.2 - group 2 ES/SD: 9.8/4.2 on Garmin
These are NOT the first 2 groups, rather the last 2 groups in this string. I'd say close to the ragged edge and at listed max from Hammer Hunter
reloading data, around 3570+/-fps.

I'm one of the few that has been having a hard time getting the Hammers to do well. This one seems to be coming around.

 

[Uh60]

Finally getting the barrel broke in.
22 Creedmoor
Aero Precision Solus action
Preferred Barrel Blanks 24" Rem Varmint/Sendero contour 1:7 twist
Little B@st*rd Gen 1 brake profiled
KRG Bravo (still waiting on AG composite stock)
Built by me - JR Precision LLC.


74 grain tipped hammer hunter (all copper)
Average 3570 FPS (didn't note ES and SD, but single digit SD)
This is with RL-17 - I need to retest with a powder that I have more of and get more of.
All shot at 100 yards
Becoming promising, hopefully it gets a smidge better.

EDIT after looking at shooting log: group 1 ES/SD: 24.9/10.2 - group 2 ES/SD: 9.8/4.2 on Garmin
These are NOT the first 2 groups, rather the last 2 groups in this string. I'd say close to the ragged edge and at listed max from Hammer Hunter
reloading data, around 3570+/-fps.

I'm one of the few that has been having a hard time getting the Hammers to do well. This one seems to be coming around.

hey,
Nice build you have, how do you like your KRG Bravo? I’m getting ready for a 700 REM and AR10 build. I see you went with a 1-7 twist, my current research says 1-7 handles the heavies, 90 and 95 grain bullets and 1-7.7/1-8 is better for 80gr and below. Would like your thoughts on 1-7 and what bullets are working with it. Thanks again for you post and good luck with your journey.

 

[oldrifleman]

In my 223s I run 1-7 for anything over 69gr. I had had a 1-7.5 on one and it was good for the 77s I ran though it. My latest is a long freebore 223 targeted at 80.5/85 gr Berger hoping for high 2900’s.

 

[Uh60]

In my 223s I run 1-7 for anything over 69gr. I had had a 1-7.5 on one and it was good for the 77s I ran though it. My latest is a long freebore 223 targeted at 80.5/85 gr Berger hoping for high 2900’s.

Thanks, I’m building a 22 Creedmoor and learning that high velocities achieved with the 22 CM are changing the rules used for twist rate used in the 223. What works for an 80 grain in a 223 is overkill in a 22 CM. I’m reaching out to the 22 CR community to lean all I can about their real world experience sending 80-90-95 down range and what twist is working for them. I don’t want to spend big $$ only to find I made the wrong choice.

 

[Taylorbok]

Thanks, I’m building a 22 Creedmoor and learning that high velocities achieved with the 22 CM are changing the rules used for twist rate used in the 223. What works for an 80 grain in a 223 is overkill in a 22 CM. I’m reaching out to the 22 CR community to lean all I can about their real world experience sending 80-90-95 down range and what twist is working for them. I don’t want to spend big $$ only to find I made the wrong choice.

The 90 gr Bergers tear apart really easily in a 7 twist 22 Creedmoor. FYI.

 

[Uh60]

The 90 gr Bergers tear apart really easily in a 7 twist 22 Creedmoor. FYI.

I compete in 1000yd PRC (currently running a 260 REM), I like the idea of switching to 22 CM to consolidate PRC and high power and reduce components necessary to have on hand. I won’t be hunting with the 22CM so I’ll be using match bullets exclusively. Do you have experience out to 1000yds with the 22 CM and what twist rate and weight bullet are working for you?

 

[Taylorbok]

@Uh60 Maybe edit ur post so it doesn't look like I said both those things.

Either way, I shoot 90 gr Berger VLD's from a 7 twist and it absolutely shoots dots. But barrels go quick. I think I had about 600 rounds on the first one before it was toast. What is 1000yd PRC competition? I've never heard of that. What does a match consist of?

22CM does well at 1000 but I don't think it's really the answer for any competitive shooting where you'll be shooting a decent volume.

 

[Uh60]

Thanks for the reply, sorry about the reply…I’m on a tablet and still learning the ropes on the web site. (My bad, it’s PPRC) and stands for Practical Precision Rifle Competition. The last match I was in started at 200 yards with a 1” inner circle surrounded by a 2” circle 2 shots from a cold bore. The remainder of the match is multiple 3 round strings at 300, 400,600,800,900, and 1000. Mostly from prone but some events throw in 200 off hand and over barricade.

 

[oldrifleman]

The creedmores do like to eat barrel throat. Barrel life goes down as the bore decreases. My 6 Creed gets about 1200-1400 shooting 105s. my 6.5 creed gets about 2200 shooting 140s. As far as stability is concerned I checked the Berger stability calculator. if I choose their 90 gr bullet at 3300 ft/sec the stability goes down as you slow the twist. It says that for this combination you would need a 6.5 twist barrel to become stable.

 

[Taylorbok]

The creedmores do like to eat barrel throat. Barrel life goes down as the bore decreases. My 6 Creed gets about 1200-1400 shooting 105s. my 6.5 creed gets about 2200 shooting 140s. As far as stability is concerned I checked the Berger stability calculator. if I choose their 90 gr bullet at 3300 ft/sec the stability goes down as you slow the twist. It says that for this combination you would need a 6.5 twist barrel to become stable.

that's zero elevation @ 59*, not that many people with those conditions.
I will about guarantee that bullet won't hold up to a 6.5 twist, not at that velocity anyway.

Even if the bullet is marginally stable it still works you'll just sacrifice some BC, it's not like it instantly starts tumbling.

 

[oldrifleman]

that's zero elevation @ 59*, not that many people with those conditions.
I will about guarantee that bullet won't hold up to a 6.5 twist, not at that velocity anyway.

Even if the bullet is marginally stable it still works you'll just sacrifice some BC, it's not like it instantly starts tumbling.

Hey, that could be true, Never pushed one that fast. I was just quoting the calculator. The only thing I was trying to point out was the stability is totally out the window at 1/8. But going back to the OP the calculator would say an 8 might work but so would a 7.

 

[Taylorbok]

Hey, that could be true, Never pushed one that fast. I was just quoting the calculator. The only thing I was trying to point out was the stability is totally out the window at 1/8. But going back to the OP the calculator would say an 8 might work but so would a 7.

Ya I run that bullet in a 7 and it works really well, until it doesn't and they start blowing up lol.

 

[oldrifleman]

Excellent, that is what he wants to know