What velocity do you get with a 16n barrel with the 147s?? Would hot loads get supersonic or no?I went with 50 yards for my Sub2K but I’m shooting 147 grain XTPs so they have the trajectory of a thrown rock.
Hmm ok we need to do some testing on 147gr stuff as well but we don't have any 16in barrel guns in 9mm. Just handguns and AR pistols (SBRs I guess now lol)I haven’t Chronographed it but the charge shows 900 fps based on Hornady’s data. I use 4.1 grains of CFE pistol. Out of a 16” barrel I’d guess 1000 fps?
I generally do something similar. I don’t know enough about the load in the Sub2K and the sights are persnickety, so I haven’t done it. Usually I run a 6” diameter Maximum Point Blank Range whatever that might be.14m/80m zero with a prism optic.
I allow zero distance to be completely arbitrary, but set it so that maximum trajectory over POA = Height over bore. This provides the mathematically maximum possible distance where point of impact is within HOB distance of POA.
Around 90m with 147s and a prism optic is where drop = HOB = apex over POA, therefore the system is point-and-shoot within 5.5cm(HOB) out to 90m.
I always forget the term. Yes, MPBR, where deviation = scope height.I generally do something similar. I don’t know enough about the load in the Sub2K and the sights are persnickety, so I haven’t done it. Usually I run a 6” diameter Maximum Point Blank Range whatever that might be.
That's basically what I do with my centerfire rifles too. I zero them 3" high at 150 yards, which is about 2.5" high at 100 yards. Calibers like 30-30 get zeroed 3" high at 100 yards. Generically, 22s and 9mm PCC's get 50-yard zeroes unless there is a reason to do it different. Now I have a project for next range trip. Pull the red dot sight off my 22 pistol and mount it on the Sub2K, then zero for 6" MPBR. My eyes and general face shape don't play well with the Sub2K factory sight set-up, and I sort of want to go back to irons on the 22 pistol. It will be a good experiment in any case. I'm not convinced I shoot that pistol better with the RDS.I always forget the term. Yes, MPBR, where deviation = scope height.
Then just write up DOPE for range higher than MPBR.
It results in a number of weird zero distances, especially if done for subsonic rounds, but it's idiot proof for anything below MPBR.