Originally Posted by Mabia
I purchased a Magneto Speed to test the difference in the powder lots. Should I adjust powder loads to keep the same muzzle velocity or adjust the scope to compensate for for the difference?
My current load is 3 MOA lower than my buddy's 338 Edge shooting Retumbo. I would like to get the speed up to close to his velocity but don't want to trash brass.
Most of the time, I feel unworthy to udder a sound around such paragons of wisdom- but I do have a big mouth and an additude
I know not of your MV variations, but when I read that you were using a Magneto Speed to record your velocities, a bell knocked me off the couch. I use a MS pretty exclusively now until I can get my CED M2
working like its supposed to. What I have noticed is that my POI moves 1-2 moa north when I strap the MS on. Just a guess- the MS effects barrel harmonics. Not to worry though- All the groups on all my Bolt Guns and Battle Guns are repeatable strapped on vs. off. I shoot for groups w/ the MS strapped on, and zero with it off. I will not zero w/ MS attached. I have not used the MS for OCW studies or laddering, but intend to very shortly. After I've shot for OCW and/or laddering with MS attached, I'll confirm with it off- hope it works..
As a wise old Bear once told me, " Measure twice, cut once!"
Note- My McMillan TAC 300win mag w/22in bbl eats that H1000 like it's candy- 74.5gr's behind a 208gr. Amax @2830fps- 3.43OAL (depending on meplates) I'm interested to see how the H1000 works in a McM-338LM- this one still has the 26" barrel.