Moving the bullet out does two things, drops peak pressure and velocity. Dropping peak pressure, increases port pressure for cycling.jakeAMP wrote: ↑Sat Oct 10, 2020 4:54 pmI backed them out to a COAL of 2.23, no notable changes.dellet wrote: ↑Sun Oct 04, 2020 8:30 pmIf you have room move the bullet out .020”jakeAMP wrote: ↑Sun Oct 04, 2020 5:16 pm Hey folks, been a minute. I FINALLY got a chance to work up a load with N110 and test it.
I used the same brass, primers, and bullets as my H110 load, but I used 9.8gr of N110 and seated to a COAL of 2.21.
You guys were totally right about N110, it’s completely hearing safe, not nearly as blasty as the H110. It cycles both suppressed and unsuppressed. It does NOT lock my Rattler’s bolt back unsuppressed, and it seems to be a 50/50 shot whether it’ll lock back suppressed. Not sure what to do about that, I don’t want to increase pressures any further because the velocity is right where I want it. Not a huge deal for me though, I’m thinking I’ll probably still use H110 for the “business” loads, if you will, or I might work up a super load with N110 later. In fact, I think I might try that next weekend.
But I digress. Again, refer to my last H110 load for cases, primers, bullets, but with 9.8gr of N110 and a COAL of 2.21, I was getting between 1030-1060fps, with a three inch group at 50 yards with no signs of instability. STD DEV was 13~
Cheers, folks, stay safe.
You can try moving the bullet out a bit more, as velocity drops add a bit of powder to get it back. The combination and possibly playing with a crimp is generally enough to push reliability over the edge on a load that is almost there.
Also check for leaks in the gas system.