Dr. Tad Hussein Winslow
member
- Joined
- Nov 14, 2007
- Messages
- 13,146
Can anyone tell me off the cuff, the answer to this (before I head to the range to test it myself next chance I get):
I have one of the gas tubes with the adjustment screw installed on my AR10 type (DPMS). Suppose I have it adjusted where it cycles fine, as I do.
Now, if I were to tighten the adjustment screw all the way down, turning it into a single shot / manual repeater:
1. Approximately how much velocity gain would I get (from say, a 120 grain .260 rem full load)?
2. Accordingly, how much POI shift would I experience, do you think, approximately?
3. What portion of that POI shift would be attributable solely to velocity (higher POI), and what portion attributable to changed barrel harmonics (random vector POI shift)? 50% / 50% or what?
4. Would the recoil increase be noticeable from a 10 lb rifle? My guess is yes.
I have one of the gas tubes with the adjustment screw installed on my AR10 type (DPMS). Suppose I have it adjusted where it cycles fine, as I do.
Now, if I were to tighten the adjustment screw all the way down, turning it into a single shot / manual repeater:
1. Approximately how much velocity gain would I get (from say, a 120 grain .260 rem full load)?
2. Accordingly, how much POI shift would I experience, do you think, approximately?
3. What portion of that POI shift would be attributable solely to velocity (higher POI), and what portion attributable to changed barrel harmonics (random vector POI shift)? 50% / 50% or what?
4. Would the recoil increase be noticeable from a 10 lb rifle? My guess is yes.