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Jack D: I have read the history, whats twisted is maybe the 174 (I think that right) was good for 3000 yards.

150 grain, a mere 2400 (all theoretically) So what range did they overshoot?...

If its 3/4 MOA at 100, technically its 1 1/2 at 200 and 2 1/4 at 300.

One you get out into the 600 yard area then its wind and sight picture that drives the results.

The gun will maintain...

The front sight have various heights installed to adjust the gun. Anything close to the WWI 150 gr loading is fine. Pretty course.

Worst case you can fill in the peep and adjust the hole up...