Tuning Barrel liner sleeve and indexing on M3

[F-classmike]

Added a carbon fiber liner sleeve and then did some indexing on the barrel. Shot target on the right first at 50 yards. Made some miner sight adjustment then tested 6 o’clock and 12 o’clock position on left target. Shot with 25.39 JSB pellets unsorted.

Stuck with the 12 o’clock position.

 

[HW97.22Sniper]

Looks great on the 12 o'clock position. Which carbon fiber sleeve did you choose? Did you glue it on or just slip over?

 

[F-classmike]

I epoxied the liner on. Purchased on ebay. Was a perfect fit for 600 mm .25 cal barrel,

 

[biohazardman]

Were it me I would adjust it slightly so that the group was directly over the point of aim. That would make it a little better for longer shots.

 

[F-classmike]

One step at a time. Find best barrel position then zero scope again. I did my test in the calm before a storm came in. Finished last group at the 12 o’clock position when a heavy downpour came in. Never had a chance to zero the scope afterwards. Conditions were very calm when I did the test.