Dtech suggested a +2 on my 6mm creedmoor with 22 inch barrel.
Dtech suggested a +2 on my 6mm creedmoor with 22 inch barrel.
What weights are you shooting? What's the twist rate?
Hohn is right. It tears up your stuff less when you are running heavy bullet loads with slow powders.
The gas port pressure was never intended to be as high as it is with your Vargets and RE-15s, much less something like MR2000.
Some argue that reducing port size solves it, but thing is, the Venturi Principal isn’t a theory. Reducing the port size might relatively decrease the VOLUME of gas that gets into the tube before the bullet unseals the muzzle, but it will at the same time relatively increase the SPEED of that gas jet. No free lunch.
It was only intended for fast powders and light 55-60 grain bullets.
We have changed the barrel configurations significantly to enable stabilization of steel core ammunition, invented longer bullets to shoot well in those tight twist barrels, and then adapted our powder charges and formulations to perform better with the bigger bullets...
...but the port location didn’t change, did it?
In your opinion, what are the slowest powders that should be used with a 20" barrel and standard rifle length gas system?