well this was odd, maybe I _don't_ need an adjustable gas block?

[evtSmtx]

I did a test series with nosler custom competion 140 grain match bullets from 37 - 41 grains per nosler's website and the gun ate all of them like a champ.

Next weekend I'll try a similar series with the ELD match.

Does anyone know where to find official hornady data? My book doesn't have this bullet

 

[jgh4445]

I wanted a free floating handguard so I had to remove my railed, stock gas block to install the handguard. It had to be a low profile gas block. I got an adjustable one just because I was changing the stock one out and thought that I "might as well" go adjustable. It will probably be useful if I go with a can someday. I tuned this one per the instructions and it works fine but I don't really notice any difference in recoil or performance between the adjustable one and the stock one. BTW, I did replace the stock one at first with a cheap low profile gas block, made in China, and the gas hole was improperly cut or placed and it wouldn't allow enough gas to operate with some types of some ammo and it wouldn't allow the bolt to lock back. When I ordered a new one, I went with adjustable "just because" as I said above.

 

[Kaldor]

I did a test series with nosler custom competion 140 grain match bullets from 37 - 41 grains per nosler's website and the gun ate all of them like a champ.

Next weekend I'll try a similar series with the ELD match.

Does anyone know where to find official hornady data? My book doesn't have this bullet

Use the AMAX data and work your way up. Im assuming 6.5 CM or?

 

[ewlyon]

I find the big advantage of adjustable gas blocks for reloaders is that when the gas system is properly tuned the brass all goes into a very neat pile to the right and behind the gun and does not show some of the damage and wear that you might see from an overgassed gun.

 

[Kaldor]

I find the big advantage of adjustable gas blocks for reloaders is that when the gas system is properly tuned the brass all goes into a very neat pile to the right and behind the gun and does not show some of the damage and wear that you might see from an overgassed gun.

Yes and no. Piling up the brass is nice I guess. AR10's without the correct springs and an adjustable gas block are really hard on brass because they are heavily overgassed. To the point where the extractor will near rip the rim of the case off. Thats why reloaders like adjustable gas blocks on the AR10 platform. In fact, thats the first thing I helped my buddy with on his new DPMS.