Home Forums Reloading Big Game Rifles Magnetospeed chrongraph question

Anyone here have experience with a Magnetospeed chronograph, specifically the sporter model?

I'm not sure which model I tried, but it definitely can affect POI.

Yep, a friend told me at lunch today only check speed when using.

I've got one and dig it.

What info you after?

I do as well.

Thanks for the replies. The ground slopes away from the shooting line at or club's rifle range and is a PITA to get my Chrony set up. If there are other's shooting I need a cease fire and time enough to set up. The Magnetospeed would make it far more simple to use.

After contemplating the Labradar I went with the Magneto Speed and I'm glad I did.

Easy to set up.

Easy to always have with my gear.

Easy on batteries.

It's been a great addition for me.

Dave,

While the Magnetospeed does affect POI and accuracy, separating accuracy and chronograph testing isn't that big a deal compared to the PITA it sounds like your confronted with.

Some people also make stands for the MS, keeping them off the muzzle. Dirtfarmer did one for his, and is very pleased with the results. You might ask him about it.

For the price, the MS Sporter solves a lot of problems for many handloaders.

Magnetospeed Sporter here. I'm 100% happy with it, after many years with a Chrony F1.

Easy to setup. No need for a tripod, or aligning to target. any light conditions, compact and light.

The only thing I can think of that it is not suited for is pistols with slides, or small handguns.

I found that poi shift was about 4" at 100 yards on a sporter 30-06. On a 20" Rem Varmint contour 308, it was not enough to see.

Every time that I see "Magnetospeed", I think that Vern Gagne ought to be its spokesman.

It was good for several inches of vertical shift at 100 yards on my 24" varmint contour.

I'm not doubting anybody else's results, but I'll share some pics of what I saw with the 20" Varmint barrel 308.

This target was shot right to left. Distance 100 yards.

First group (right) was with the magnetospeed attached, four shots.

Second group (center) was after adjusting the scope, five shots. First two shots with the magnetospeed attached, last three shots without the magnetospeed.

Last group (left) was fired without the magnetospeed attached, five shots.

Not doubting yours either MM, even before the pics. Just reporting mine for contrast. Braked 20" on a bipod vs regular 24" on bags. Maybe something there too.

I imagine the magnetospeed does unpredictable things to the harmonics. Results probably can vary widely even from similar barrels.

I like mine a lot. Been using it for about a year and a half. It will shift POI, but the way I do my load work it doesn't really matter. Just like the others have said,it works all the time and makes it easy to spot check your speeds.

I like mine. although it doesn't work with every type of firearm but the convenience makes it the one I use the most. i found the effects on pure accuracy, the group size, is minimal on most guns and the point of impact is of no concern of mine until I zero the gun after developing the load.

A few questions for you MS owners/users.

1. Does it typically affect group size as well as POI?
2. If load workup is done with the MS attached, will the most accurate load found be the same as if load workup was done without the MS attached?

I have one it works and proves to be accurate when checked against my buddy's Labradar.

That said I dislike having to load up extra rounds to get an idea of velocity when working up loads. On my pencil barrel Kimbers there is certainly a POI shift I experience. I can see the light magentospeed having minimal effect on a varmint barrel and such but it def drops the POI on my lightweight rifles.

I have the original Magnetospeed and the dial wheel control is broke and I am limping it along for a bit more....hoping it will make it till christmas when I ask for a Labradar for christmas. Labradar IMO is just as quick to setup. Also the Magnetospeed has a hard time staying put between shots on the pencil barrels. On my fatter barrel it does ok, but after a couple shots on my Kimbers I am stopping to redajust and retighten. It works and I certainly like it better than my beta chrony but there is enough about it that I don't like that my big Christmas present request is a Labradar.

1. It opened up the group considerably with the sporter 30-06. 1.5 moa to 4 moa.

2. I'd guess not necessarily.