Does anyone have a recommendation for gas port hole size for 6 creedmoor? I'm curious if anyone has played with different sized gas port holes and if it made a difference or what size everyone seems to be using for adj gas block for the 6 creed.
Gunsmithing Gas Port hole size
- Thread starter RTO
- Start date
Re: Gas Port hole size
Gas port size depends on the lenght of the barrel relative to the gas port location, as well as caliber.
Since this is a 6.5 Creedmore, I am assuming you are running a rifle length gas tube and at least a 20" barrel?
I would go with a .093 to start, which is pretty standard for .308 and .260.
As a maximum you can go up to a .098, which is an option since you will be using an adjustable gas block.
Gas port size depends on the lenght of the barrel relative to the gas port location, as well as caliber.
Since this is a 6.5 Creedmore, I am assuming you are running a rifle length gas tube and at least a 20" barrel?
I would go with a .093 to start, which is pretty standard for .308 and .260.
As a maximum you can go up to a .098, which is an option since you will be using an adjustable gas block.
Re: Gas Port hole size
Its actually a 6mm creedmoor, rifle length gas, barrel length is 22" and adj gas block. Would you still start at .093?
Its actually a 6mm creedmoor, rifle length gas, barrel length is 22" and adj gas block. Would you still start at .093?
Re: Gas Port hole size
The last 6.5 Creedmore I built started at .087 and went to .089 runs great there. YMMV
The last 6.5 Creedmore I built started at .087 and went to .089 runs great there. YMMV
Re: Gas Port hole size
RTO,
.099" is standard with a selective (adjustable) gas system. If you are installing an adjustable system go that route. If you are not going to install an adjustable system, start small and you can always work up. .084" is what you should start with doing it that way. Open up the port as required only enough to make the rifle work with the load(s) intended.
Obviously, the adjustable method will give you more flexibility, but sometimes adjustable systems come 'un-adjusted' and therefore are a bit frustrating to maintain. A good system won't do that.
RTO,
.099" is standard with a selective (adjustable) gas system. If you are installing an adjustable system go that route. If you are not going to install an adjustable system, start small and you can always work up. .084" is what you should start with doing it that way. Open up the port as required only enough to make the rifle work with the load(s) intended.
Obviously, the adjustable method will give you more flexibility, but sometimes adjustable systems come 'un-adjusted' and therefore are a bit frustrating to maintain. A good system won't do that.
Re: Gas Port hole size
Thanks guys, Im building my own adjustable gas block so I just needed the hole size so I wasnt to small to be able to regulate properly. Thanks for all the input.
Thanks guys, Im building my own adjustable gas block so I just needed the hole size so I wasnt to small to be able to regulate properly. Thanks for all the input.
