- Jul 29, 2014
- 50,146
Will this gauge work on bolt and AR style rifles?
Yes.
Will this gauge work on bolt and AR style rifles?
Did you do this after cleaning or at least dry patching the bore?OP Update...
I bought a drill rod (.21875") and a .223 "cartridge" laser bore sighter- Yes, I'm an Amazon Prime junkie.
The bore sighter and scotch tape on the suppressor effluent method showed that I was not perfectly centered at the endcap, but well within tolerance for the newly bored out endcap.
The drill rod demonstrated the exact same thing; only problem being that after ~.5" into the barrel, I met resistance from the barrel and didn't want to force the drill rod.
I'm guessing I need to find a machinist who can turn 20" of the rod down by ~.003" so I can have the drill rod fully pass through the barrel before making a conclusion. It is probably cheaper to buy a new, narrower, drill rod.
Thoughts?
As always, Chad delivers. Ordering both shortly. Thanks for the tip!Cnc warrior makes a cheaper alignment gauge.
Its $15.
Did you do this after cleaning or at least dry patching the bore?
Are you inserting it from the breech/chamber?
.21875 may be a little too close to bore diameter. Geissele uses .002" under bore diameter to allow for variations in bores (both diameter and straightness).
That is quite possible, especially if it was the first time shooting it after building it. Many suppressors will easily become misaligned if they are not tight up against the shoulder of the barrel (or muzzle device on a qd), or if there is any 'settling' of the internals when first shot on a form 1 suppressor.Cleaned and lubed the bore (only 25rds fired since last cleaning) and was able to get the drill rod down without a struggle. It was tight, but I used "oversized cleaning patch pressure). The drill rod is clear of all baffles and the end cap is almost perfectly centered.
I'm really starting to think the issue-as pointed out previously- was that my threads loosed while shooting. I shot 20rds suppressed without tightening and the can rattled when it was removed.
Agree and also ensure the rounds you are firing are shooting well and not keyholing first!FWIW, I have NEVER shot through a can until I've checked alignment with a bore gauge, even waiting months after receiving my stamp.
Agree and also ensure the rounds you are firing are shooting well and not keyholing first!
Cnc warrior makes a cheaper alignment gauge.
Its $15
Thank you Chad!
I wanted to pick some up, but the Geiselle ones are so expensive. These work as well, you think?
I shot 5 rounds un-suppressed and confirmed the holes were perfect circles.
I then removed the upper, attached the can and visually looked through (not ideal- I know that now). Looking from the can to the breech gives a much better picture than looking from the breech to the can. I was able to clearly see baffles, spacers, muzzle, then lands and grooves clearly. The barrel actually gave the illusion of being polygonal when looking at it that way.
Thanks everyone for the help. As stated previously, this was my first Form 1 build and I'm a complete newbie to suppressors.
Tomorrow, I will give it another try (confirming alignment with the drill rod first) and post back with what happened.
The .223 one works great. The .308 one is too large to fit through most .308 suppressors.
I shot 5 rounds un-suppressed and confirmed the holes were perfect circles.
I then removed the upper, attached the can and visually looked through (not ideal- I know that now). Looking from the can to the breech gives a much better picture than looking from the breech to the can. I was able to clearly see baffles, spacers, muzzle, then lands and grooves clearly. The barrel actually gave the illusion of being polygonal when looking at it that way.
Thanks everyone for the help. As stated previously, this was my first Form 1 build and I'm a complete newbie to suppressors.
Tomorrow, I will give it another try (confirming alignment with the drill rod first) and post back with what happened.
Ok cool.
One other question: with these, or the Geiselle rods, or others like them, how do you store them? I imagine that you've got to be careful about leaning them against stuff at an angle long term or whatever in case they take a set.
Everyone makes mistakes... never assume.Some of the alignment issues mentioned in this thread are why I plunked down the extra $$ for a suppressor built by the same man who built the rifle it's mounted on. I screwed it on and pulled the trigger with no worries in the world. Damned tube even has my birthday as the serial number.