XP-100 Tuning

[Mark Chesebro]

Anyone have any tips on how to accurize an original xp in 221 fireball? Mine strings shots vertically.

 

[Woodchk]

Best bet is you would have to put on a
new barrel . I just helped and older friend out . Until he did that was having same problem as you .

 

[Mark Chesebro]

Best bet is you would have to put on a
new barrel . I just helped and older friend out . Until he did that was having same problem as you .

Before I rebarrel, I did notice that the forend is not putting pressure on the barrel but it's touching in some places and not others.
Did your friend try free floating his barrel completely?

 

[Woodchk]

He tried several things but I think this is a common problem from what I have read . He was a benchrest shooter and he was getting groups like you .

 

[LCazador]

I tried free floating it made it worst. What worked in my old fireball was removing all contact and then putting upward pressure on the last two inches of the fore end. Also seating bullets as close to the lands as possible helps. Keep it original! Mine is a 1963 original.

 

[K9TXS]

If it has the original plastic stock, I would start there. You can purchase a good stock from Ernie. Bed it and then give it another try. Ernie's the man when it comes to the XP's.

 

[Mark Chesebro]

I tried free floating it made it worst. What worked in my old fireball was removing all contact and then putting upward pressure on the last two inches of the fore end. Also seating bullets as close to the lands as possible helps. Keep it original! Mine is a 1963 original.

I'll give it a try.

 

[Mark Chesebro]

If it has the original plastic stock, I would start there. You can purchase a good stock from Ernie. Bed it and then give it another try. Ernie's the man when it comes to the XP's.

Ernie's contact info? You can put it in a direct message.

 

[dhagerty40]

I would also check the stock first. The plastic stocks are notorious in cracking or splitting right down the middle of the stock where they get bonded when first made. this causes all types of accuracy problems.

 

[Mike Casselton]

Also, if you're using a rear bag (I hope so) make sure it's the flat type of bag, and don't let the butt slam into it.

Another type that works well for me is the Gamechanger schmedium size. With some fill removed, you can rest the butt in the center and the side of your hand on the ear. It's super stable.

 

[Mark Chesebro]

As long as I've got you all here,
Looks like in the "Show me your XP-100 " thread some xp's have regular rifle scopes, not long eye relief. How does that work?