Bolt lug contact questions

Update: so seems it’s more of a bullet issue. 52/53gr are 1moa at best, 40gr are better and just found some flat base to try in place of the v-max I’ve been shooting. 50gr v-max are producing consistently the .5”moa groups I’ve been hoping for with N130. On close inspection the lugs seem to be making even contact which shows in the picture as a thin line on each lug. Not perfect but even. Thanks for the tips, happy shooting:)
 
Peecos said:
Update: so seems it’s more of a bullet issue. 52/53gr are 1moa at best, 40gr are better and just found some flat base to try in place of the v-max I’ve been shooting. 50gr v-max are producing consistently the .5”moa groups I’ve been hoping for with N130. On close inspection the lugs seem to be making even contact which shows in the picture as a thin line on each lug. Not perfect but even. Thanks for the tips, happy shooting:)
Click to expand...

With that slow twist lighter flat base will probably shoot better than the long V-Max bullets... My favourite was a custom made (McCracken) 51 grain flat base...
 
Another thing you might try is replace the firing pin spring with a new spring at about 24 pounds at cocked length. If the old original spring took a set and lost 6 pounds it could give inconsistent ignition and accuracy problems. Big Horn sells good springs.
 
Peecos said:
Update: so seems it’s more of a bullet issue. 52/53gr are 1moa at best, 40gr are better and just found some flat base to try in place of the v-max I’ve been shooting. 50gr v-max are producing consistently the .5”moa groups I’ve been hoping for with N130. On close inspection the lugs seem to be making even contact which shows in the picture as a thin line on each lug. Not perfect but even. Thanks for the tips, happy shooting:)
Click to expand...

Has it been established that the barrel is free floated, the action correctly bedded and the crown freshened up?
 
bearhunter was correct, definitely doesn’t like bt bullets as well as fb. Found some 50gr Barnes Varminator and 52gr Barnes Match Burners, both are Flat Base. Instantly more consistent grouping through the whole charge range. Here’s the final results. Cheers
 
You must log in or register to reply here.
Back
Top Bottom