This is the very reason why I encourage everyone who is getting into reloading or loading for a "new to them" caliber to buy a guage for thier rifle to measure thier chaber to determine the OAL that is best for that rifle. Saves time and in the end money as it will not take as many "chances" to figure out the best length.

All barnes bullets seems to be very sensative to OAL. I have gone from 2 inch groups to sub MOA just by adjusting OAL with Barnes x bullets. I have also had this happen with Winchester Failsafes as well. Seem like more "solid" bullets are more sensative to it.