22-250 1:16 twist

[danyboy]

Hi everybody, new member here. I picked up this 22-250 and realized afterwards it had a 1:16 twist in a 1 1/2" O.D. barrel mounted on a Mauser 98K action. I tried Vmax 55gr. Nosler Varmageddon 40gr. and 35 gr. bullets. Have a hard time grouping with 55grainers and 40 gr ones aren't stable in the wind. Since 1:16 twist is more common with 22 Hornet, I can't really find any load data for such a twist in any of my loading books and neither on the net. Any help would be appreciated.
Thanks.

 

[mikecr]

Horrible twist for a 22-250

 

[gambleone]

Are you sure it is 1:16 twist??

 

[Zero333]

A nylon bristle brush on a cleaning rod will tell you the true twist.

If you have a powder and bullet in mind let us know, maybe one of us will run the numbers in Quickload for you. COAL and bbl length are also useful.

 

[danyboy]

Horrible twist for a 22-250

That's what I thought

 

[danyboy]

Are you sure it is 1:16 twist??

Positive. I get 1.5 turns in 24" of rifling.

 

[danyboy]

A nylon bristle brush on a cleaning rod will tell you the true twist.

If you have a powder and bullet in mind let us know, maybe one of us will run the numbers in Quickload for you. COAL and bbl length are also useful.

A nylon bristle brush on a cleaning rod will tell you the true twist.

If you have a powder and bullet in mind let us know, maybe one of us will run the numbers in Quickload for you. COAL and bbl length are also useful.

Barrel is 26" long. Nosler Varmageddon 40 gr. IMR4895.

 

[mikecr]

Does your rod make a full turn at 16" pull?

 

[danyboy]

Does your rod make a full turn at 16" pull?

Yes it does. I measured twist rates before. I couldn't believe it either. I doubled checked 5 times and asked some shooting buddies to check it and they both came to the same conclusion.

 

[danyboy]

A nylon bristle brush on a cleaning rod will tell you the true twist.

If you have a powder and bullet in mind let us know, maybe one of us will run the numbers in Quickload for you. COAL and bbl length are also useful.

Imr4895, 4064, varget, 3031, Vmax 55gr, Bowler varmageddon FB tipped 40 and 35 gr.

 

[danyboy]

Imr4895, 4064, varget, 3031, Vmax 55gr, Bowler varmageddon FB tipped 40 and 35 gr.

Nosler varmageddon

 

[danyboy]

A nylon bristle brush on a cleaning rod will tell you the true twist.

If you have a powder and bullet in mind let us know, maybe one of us will run the numbers in Quickload for you. COAL and bbl length are also useful.

Imr 4895, vmax 55gr. Nosler varmageddon 35 & 40gr.fb tipped. 26" barrel.

 

[danyboy]

A nylon bristle brush on a cleaning rod will tell you the true twist.

If you have a powder and bullet in mind let us know, maybe one of us will run the numbers in Quickload for you. COAL and bbl length are also useful.

Imr 4895, vmax 55gr. Nosler varmageddon 35 & 40gr.fb tipped. 26" barrel.

 

[Zero333]

I have a older version of QL and don't have the 35 & 40gr Nos Var Metal tip listed, but a similar bullet should suffice...

22-250
26" bbl
-----------------------------
35gr Nos. BT Var.
2.350" coal

Varget - 39.5 gr, 59,664 psi, 4,353 fps.
IMR-3031 - 37.8 gr, 59,436 psi, 4,502 fps.
IMR-4064 - 39 gr, 59,986 psi, 4,363 fps.
IMR-4895 - 39.8 gr, 59,543 psi, 4,445 fps.

-------------------------------------------
40gr Nos. Bal.Tip
2.350" coal

Varget - 38.8 gr, 59,442 psi, 4,175 fps.
IMR-3031 - 37 gr, 59,511 psi, 4,298 fps.
IMR-4064 - 38.3 gr, 59,832 psi, 4,184 fps.
IMR-4895 - 39 gr, 59,283 psi, 4,258 fps.

----------------------------------------

55gr V-max
2.350" coal

Varget - 35.8 gr. 59,258 psi, 3,715 fps.
IMR-3031 - 33.8 gr, 59,236 psi, 3,774 fps.
IMR-4064 - 35.3 gr, 59,656 psi, 3,718 fps.
IMR-4895 - 35.9 gr, 59,494 psi, 3,789 fps.

-------------------------------------

Reduce & work up. Watch for signs of pressure etc... QL is a guide just like all other reloading manuals.
Good Luck !

 

[danyboy]

I have a older version of QL and don't have the 35 & 40gr Nos Var Metal tip listed, but a similar bullet should suffice...

22-250
26" bbl
-----------------------------
35gr Nos. BT Var.
2.350" coal

Varget - 39.5 gr, 59,664 psi, 4,353 fps.
IMR-3031 - 37.8 gr, 59,436 psi, 4,502 fps.
IMR-4064 - 39 gr, 59,986 psi, 4,363 fps.
IMR-4895 - 39.8 gr, 59,543 psi, 4,445 fps.

-------------------------------------------
40gr Nos. Bal.Tip
2.350" coal

Varget - 38.8 gr, 59,442 psi, 4,175 fps.
IMR-3031 - 37 gr, 59,511 psi, 4,298 fps.
IMR-4064 - 38.3 gr, 59,832 psi, 4,184 fps.
IMR-4895 - 39 gr, 59,283 psi, 4,258 fps.

----------------------------------------

55gr V-max
2.350" coal

Varget - 35.8 gr. 59,258 psi, 3,715 fps.
IMR-3031 - 33.8 gr, 59,236 psi, 3,774 fps.
IMR-4064 - 35.3 gr, 59,656 psi, 3,718 fps.
IMR-4895 - 35.9 gr, 59,494 psi, 3,789 fps.

-------------------------------------

Reduce & work up. Watch for signs of pressure etc... QL is a guide just like all other reloading manuals.
Good Luck !

THANKS A LOT ZEro333 . I'll give these loads a try, reducing and work up . This QL is news to me. I'll come back with news about how it went. I appreciate the help.

 

[mikecr]

The 55 Vmax will likely tumble through your chronograph..

 

[bsekf]

Light bullet, slow powder and lower velocity. Now you know why it was such a deal

 

['Freak]

Try Sierra’s good ol’ Varmint Master 40gr. HP. It’s great stuff in 1 in 16 twist rimfire barrels that have been re-chambered to either 22 Hornet or 22 K-Hornet.

 

[Zero333]

Light bullet, slow powder and lower velocity. Now you know why it was such a deal

I gave him quickload predited da. ta up to 59,000 psi and there is a good chance he'll be able to safely exceed those predicions at least 100fps faster if he desires.

Modern actions can handle the 22-250 with 65,000 psi. His action being a Mauser k98 might or might not handle more than 60,000psi.

 

[danyboy]

The 55 Vmax will likely tumble through your chronograph..

55Vmax never tumbled with any of my loads