Originally Posted by jwp475
Originally Posted by XL5


The critical element in loading for long range accuracy is standard deviation of muzzle velocity. If you roll your own, the easiest way to monitor SD -- and the best way to QC your loads -- is to chronograph them. So owning a chrono is about accuracy. And success, provided you define 'success' as small groups at long range. I shoot over a chrono almost every time I shoot at paper, not out of curiosity, but to QC my work by monitoring my loads' SDs.


Exactly......


THANKS JWP for going to the trouble of limiting XLs quote......

so I didn't have to...... whistle grin

I do agree in GENERAl. However I've observed 'exceptions to the rule' a little more often than I expected.

I look for low SD and ES BUT I've also had 'better than average' groups from loads with higher SD-ES. Curious to me, but have been unable to explain to my own satisfaction how that happens.

I would be surprised it you or others have not experienced the same.

OTOH I have no place to hunt extreme ranges. 400yds is about maximum area for seeing and shooting. Therefore I've been satisfied with loads from 1/2-1" groups (outside-outside) not center-center. I'm sure y'all understand that diff.

On another subject, I rarely find myself on the same page as Mr Redgwell.


jwall- *** 3100 guy***

A Flat Trajectory is Never a Handicap

Speed is Trajectory's Friend !!