CaptainMal
Silver $$ Contributor
Been shooting those BOSS tuner brakes on three rifles for a couple decades. They work for me and I have three great hunting rifles because of them. Never messed with something like that for target until recently.
Bought a RAS tuner/brake for my Dasher a few months ago. At the same time I had major issues with carbon fouling and serious pressure problems. Isso, C-4 and a bore scope seems to have corrected the problem but I also picked up a PTG Savage bolt head. Off went the dished factory bolt head, on went the PTG and OOPS ... .007" less headspace.
Eric Bostrom (Bostrom Gunsmithing) turned the barrel out and set the headspace for the new bolt head. He told me I would have to re-sight the Nightforce as the barrel was in another position. At the range today I also found out the tuner I had put on was all out of calibration from the place where it was, along with the index mark I had scribed into the barrel. Earlier I just stuck it on, moved it one time and it worked. This time was going to be a real tuning problem.
Now you pros should have stopped reading this long ago. For any of you, like me, who think this tuner stuff is all hokum, read and look on.
I found the new "tight" position for the brake and moved out two main notches. Starting there I took two shots and looked at 100 yards. After each two I would move the tuner out a tiny 1/2 notch. Marked the "two-out" line with a double dot, then a triple dot, then 4 dots in a row. Later I will make them with an electric scribe and line the top of the barrel so I can duplicate the setting.
Groups were all under .5" but that's awful for this Dasher. AS I moved the tuner to the three dot + mark it still showed nothing special, next move said "maybe to me". That was right on the 4 dot line. I shot a third shot into .132 in strong crosswinds. Next 4.5 mark put two into a hole. I did a third and saw that hole get larger. Next line would be a five dot line and it was a "maybe" group in the .3's.
Moved the tuner back to the line before and stuck two more into that same hole for a 5 shot group of .095. That tuner worked like I was told it would.
Next step is to go to 600 and 1,000 yards and see more. This was a start and just a start. Just impressed that this RAS Tuner thing I got from Bostrom gunsmithing. Seems to work. I'll be darned.
Bought a RAS tuner/brake for my Dasher a few months ago. At the same time I had major issues with carbon fouling and serious pressure problems. Isso, C-4 and a bore scope seems to have corrected the problem but I also picked up a PTG Savage bolt head. Off went the dished factory bolt head, on went the PTG and OOPS ... .007" less headspace.
Eric Bostrom (Bostrom Gunsmithing) turned the barrel out and set the headspace for the new bolt head. He told me I would have to re-sight the Nightforce as the barrel was in another position. At the range today I also found out the tuner I had put on was all out of calibration from the place where it was, along with the index mark I had scribed into the barrel. Earlier I just stuck it on, moved it one time and it worked. This time was going to be a real tuning problem.
Now you pros should have stopped reading this long ago. For any of you, like me, who think this tuner stuff is all hokum, read and look on.
I found the new "tight" position for the brake and moved out two main notches. Starting there I took two shots and looked at 100 yards. After each two I would move the tuner out a tiny 1/2 notch. Marked the "two-out" line with a double dot, then a triple dot, then 4 dots in a row. Later I will make them with an electric scribe and line the top of the barrel so I can duplicate the setting.
Groups were all under .5" but that's awful for this Dasher. AS I moved the tuner to the three dot + mark it still showed nothing special, next move said "maybe to me". That was right on the 4 dot line. I shot a third shot into .132 in strong crosswinds. Next 4.5 mark put two into a hole. I did a third and saw that hole get larger. Next line would be a five dot line and it was a "maybe" group in the .3's.
Moved the tuner back to the line before and stuck two more into that same hole for a 5 shot group of .095. That tuner worked like I was told it would.
Next step is to go to 600 and 1,000 yards and see more. This was a start and just a start. Just impressed that this RAS Tuner thing I got from Bostrom gunsmithing. Seems to work. I'll be darned.
