Home Forums Hunting & Shooting Ask The Gunwriters Weighing CCI SV 22lr ammo for accuracy?

Good info on the chambers, parallax, and wind. Thanks for the posts, John!

A local gunsmith sets back the factory barrels on the 10/22 to achieve a bit less freebore, but does nothing else to the chamber. Claims the Ruger chamber is actually tapered. Does seem to improve accuracy. Of course any form of tight chamber in a .22 must take into account extraction. I've had problems with manual extraction in a 10/22 so modified, a loaded round sticking in the chamber when the extractor lets go before the round is extracted. It's a delicate balance.

Yep - I had seen that so when I rebarreled my 10/22 I chose one with a Bentz chamber. Those are dimensioned between the match and sporting chamberings specifically for autoloaders to avoid that problem. My Cooper and Anschutz .22's are match chambers and include a note not to shoot CCI stingers that are a little longer cased.

I knew a guy who would carry a micrometer with him when shopping for .22 ammo to feed his Model 52's. Whenever he found bullets that mic'ed .225" (which happened more often than you'd think) he would buy all they had. His theory was that a fat oversize bullet cut across the spectrum of brands/types/velocity cartridges to a large degree. It was hard to argue with his success on the targets.