magnetoSpeed

[Kevin Stenberg]

A question for anyone who has used the MagnetoSpeed Cronograph.
I just got mine today in the mail. Naturally i had to read through the instructions and try in on several of my guns. To get a good level from front to back on the bayonet to the bore axis. I used paper and cardboard as an added shim on top of the rubber shims you get with the unit. Does anyone else do the same with there unit?
I only shot it in the 223 tonight. The retention strap never slipped and the unit read all 19 rounds i put over it.
It gives me the hebe jebies everytime i thought about the Bayonet being only an 1/8th of an inch under the bore line.

 

[fiver]

at least it's under the bore line.

 

[waco]

Yeah. It sits close. It works very well though. We have had no problems with my brothers. No shims needed.

 

[Ian]

I guess your kit is the "sportsman" one and it doesn't come with an alignment rod?

The clearance between edge of bore and edge of the bayonet is supposed to be 1/8 to 1/4", closer to 1/4" works fine for most things. I only needed to get creative with shims when there's a weird taper or step, or I'm doing something weird like mounting it on a revolver.

 

[Ian]

I just looked and the sportsman kit doesn't come with the wide selection of spacers that my v3 kit did, so yes, you might need to fabricate some shims.

 

[Brad]

Did they lead you to believe they included the needed shims?

Yes, it may have been a shim sham.

 

[waco]

Did they lead you to believe they included the needed shims?

Yes, it may have been a shim sham.

Classic....

 

[Kevin Stenberg]

I knew there was only 2 shims that came with my package.
And wouldn't you know my 223 handi has a tapered exterior just before the muzzle. I didn't need any of their shims but i had to add 2 cardboard shims in front of the strap.

 

[Ian]

Well, that's why God invented the raisin bran box. Works for starters, too, and gaskets. The recycled stuff of today isn't quite as good, so use soda cartons if you need a harder, tougher gasket or shim.

Use a cleaning rod to make sure your bayonet table is parallel to the bore, and spaced correctly, and you're gtg.

 

[Kevin Stenberg]

Ian i am on the same page as you. The first thing i made were 2 rods (22 and 30 cal) that were close but smaller than bore dia. Shimmed them larger (tape wraped around the rod) to fit snugly in the barrel. To use as bore off set rods.
I made the rods the length of the bayonet + 6" that is in the barrel.
For now being new to me. I have the offset rod on the shooting bench. An check the offset about every 3rd shot.