Magneto Speed Chronograph.

[jackieschmidt]

I am contemplating sorting my 6PPC and 30BR brass by velocity. Fireform them, then use the second firing as the sorting Shot.

I have an Oehler 35, but it seems the Magneto Speed might be more accurate over changing light conditions.

Any thoughts On this.

I know Bart stated he uses this only on his 6BRA, but since you have to fire a 6 PPC twice anyway before it is ready to go to the line, why not garner some info.

 

[Straightshooter1]

I am contemplating sorting my 6PPC and 30BR brass by velocity. Fireform them, then use the second firing as the sorting Shot.

I have an Oehler 35, but it seems the Magneto Speed might be more accurate over changing light conditions.

Any thoughts On this.

I know Bart stated he uses this only on his 6BRA, but since you have to fire a 6 PPC twice anyway before it is ready to go to the line, why not garner some info.

Instead of using sun screens, can't you use a lamp lighting system like you would indoors to remove that lighting variation?

Otherwise, it sounds like an MS would be your best solution for your objective.

 

[D-4297]

I use my Magneto Speed for load development and checking velocities when changing Powder Lots . Have compared it side by side to several Lab units , and the difference isn't enough to argue about .

 

[jackieschmidt]

I use my Magneto Speed for load development and checking velocities when changing Powder Lots . Have compared it side by side to several Lab units , and the difference isn't enough to argue about .

My idea is it is a lot easier to use In this scenario.

 

[Eric Leonard]

I use my Magneto Speed for load development and checking velocities when changing Powder Lots . Have compared it side by side to several Lab units , and the difference isn't enough to argue about .

I have a MS and LR , the MS checks velocities as good as anything but I tried working up loads with mine and then when I would take it off the rifle the loads wouldn’t shoot the same, poi shifts and group sizes changed. The LR doesn’t have those problems

 

[D-4297]

Of course the MS will change POI , but I have no idea why it would change a "group size". I get very consistent "group sizes" with the MS attached . My normal POI is about 1 1/2" higher , and 3/4" left without the MS . The LR isn't connected physically to your barrel . The MS is , and it will change your barrel harmonics . If you are only checking velocities what is the issue ? You seem to be trying to accomplish several things at once , and I tried to respond to your initial question regarding velocity checking .

 

[BartsBullets]

Use both. But when you use the MS put a piece of duct tape over the strap to help hold it in place. Otherwise it can slip and give you an occasional bad reading.

Couple of suggestions: don’t shoot just any load. Shoot one that the rifle is tuned for. That will give you tighter numbers. Remember as the day heats up the bullets will go faster.

Bart

 

[Tesoro]

my advice is buy the cheapest version and $10 extra for the heat shield and a few bucks for the plug to go wireless to your phone app. had both.