Sako 22ppc neck diameter

[20 TAC]

Hello all. Long time lurker on this forum but figured this would be a good source to get my question answered.
Can anyone tell me what neck diameter Sako used on their factory 22ppc chambers? I plan on using Lapua 220 Russian brass with this rifle and believe necks will have to be turned slightly to allow proper clearance. Before having a chamber cast made I was hoping someone here will know.
Any help offered here is greatly appreciated. Thank you in advance.

 

[20 TAC]

Nobody?? Any help is appreciated.

 

[JohnHenry]

FYI, http://benchrest.com/showthread.php?88962-Sako-22PPC-neck-sizing

 

[20 TAC]

Thank you for your help John. Sounds like probably a .252".

 

[JohnHenry]

20 TAC, Agree, .252 chamber neck diameter would be my best estimate also. The 3rd. edition(2000) of the VihtaVuori reloading manual indicates a max. loaded neck diameter for the 22PPC-USA of .250. Their loaded max neck diameter is usually .002 less than the chamber neck diameter.

 

[20 TAC]

Thank you for your help sir. I will turn one piece of brass to a loaded diameter of .249" and then fireform and measure the results. Just didn't want to turn off too much or too little to begin with. Thank you again!

 

[FredV]

Thank you accurateshooter.com for keeping all these archived threads around. I recently got a Sako L461 in 22ppc. I initally picked up some Norma brass and loaded them up. They functioned great and regularly shoot 1/2 MOA in our local 300 yard varmint matches. I have some unused Lapua 220 Russian brass that I wanted to convert, and "ASSUMED" that a factory rifle would not have a tight neck. Wrong! I was very happy to find this thread that backed up my measurements. My Norma brass measured an average neck thickness of 0.0116 while the Lapua brass measured 0.0150. I now turn my lapua brass down to 0.012, going for a loaded outside neck diameter of 0.248 to 0.249. Excellent info! Thanks again

 

[Bill K]

I know my 22 PPC loaded neck is .249, so you should be good to with your set up and plan. That is with Lapua brass, by the way.

 

[Dusty Stevens]

.252nk