Thread: My 260AI Load Development Begins

Originally Posted by Tikka7mm08

45.0gn RE17

Sent from my SM-G925I using Tapatalk

Sent from my SM-G925I using Tapatalk

45.5gn RE17 3007fps av and 10.7SD. Group opened a little but was most likely me rushing. No hard bolt lift, no difference from mild load. Thinking I will play with seating depth with 45.5gn...?

Sent from my SM-G925I using Tapatalk

Originally Posted by Tikka7mm08

45.5gn RE17 3007fps av and 10.7SD. Group opened a little but was most likely me rushing. No hard bolt lift, no difference from mild load. Thinking I will play with seating depth with 45.5gn...?

Sent from my SM-G925I using Tapatalk

You possibly won't get meaningful load development groups with the MS attached, hard to say if the Carbon barrel will be effected as much as a SS one or not ?

Originally Posted by Tikka7mm08

45.5gn RE17 3007fps av and 10.7SD. Group opened a little but was most likely me rushing. No hard bolt lift, no difference from mild load. Thinking I will play with seating depth with 45.5gn...?

Sent from my SM-G925I using Tapatalk

Is that with 140 grains?

Originally Posted by Danny

Is that with 140 grains?

142gn LRABs.

That's what I would be doing now too. Speed is there so adjust seating depth until you find accuracy your happy with.
The last few load developments that I have done, I have found where I wanted to be speed wise with acceptable pressure, then just played with seating depth to get the accuracy I wanted.
Has worked very well!

Also on mine it shoots a lot better once I take the magneto off

Sent from my SM-G900I using Tapatalk

Possibly less affected as stiffer...will find out when I shoot with it off as now playing with depth for accuracy so don't need it attached. 3000fps is more than hoped for so need to chase more pressure.

Having a play with this now...7mmSaum. Not so pleasant shoot with radial break. 66.5gn 2217 3020fps and 7.1SD.

Sent from my SM-G925I using Tapatalk

Originally Posted by Tikka7mm08

Having a play with this now...7mmSaum. Not so pleasant shoot with radial break. 66.5gn 2217 3020fps and 7.1SD.

Sent from my SM-G925I using Tapatalk

Easily addressed

My ears ringing with earmuffs on...but hard bolt lift at 67gn so will play with 66.5gn. Groups not great though.

Originally Posted by Tikka7mm08

My ears ringing with earmuffs on...but hard bolt lift at 67gn so will play with 66.5gn. Groups not great though.

Better muffs, earplugs as well, different brake, suppressor, a few options there

162 amaxs?

Yes. Got some 140ABs over 67.5gn to try too.

Originally Posted by Tikka7mm08

Yes. Got some 140ABs over 67.5gn to try too.

sweet. bloody nice scope too btw