Home Forums Reloading Big Game Rifles Magnetospeed chrongraph question

Thank you for reposting the pics.

I think a c-clamp or two and some plywood and I could do that at the range where I shoot. I like it!

You'll need to be able to adjust the MS to align with the bore. I find that guns sit differently in the rest and thus have different positions regarding the MS.

So design flexibility in your free standing device so that you can move the unit to suit the situation.

A bench clamp would have the advantage of not needing a mega long shooting bench like my set up.

Post photos when you get it worked out.

DF

Will do.

I may have to fabricate something to go on a tripod, just to get a good, stable foundation under the MS unit, but your pics definitely showed me a better way to skin the cat as far as a mount system for the unit itself.

My first thought was a piece of 1/2" plywood with some stout c-clamps to give me more bench real estate at the range, but I'm thinking that anything resting on plywood that doesn't have bench surface under it will be susceptible to vibration, which may be an issue. Maybe not, but I'd imagine it's a possible problem.

A tripod setup will put the unit precisely where it has to be and put a solid base under it.

Honestly, I may or may not shoot tons of groups over this, I'm more looking to find ways to accommodate firearms the Sporter doesn't readily accommodate, such as a Glock handgun or possibly my flintlocks (full stock custom long rifles) if the Sporter won't secure to the muzzles.

If shooting my load dev. groups over it is feasible, bonus points.

I'll update as I get myself rigged up and running with it.

One of those car window camera/binoc/spotting scope holders may be a good start.

It's adjustable and could clamp on a 2" wide piece of 1/4" plywood attached to a base, "C" clamped to the bench.

You could actually mount the MS at 3:00 or 9:00 so the clamped unit could be moved up and down the vertical plywood piece, all other adjustments made with the holder unit.

I don't see why the MS has to be under the barrel. Mounted to the side would be great for lever guns with full length tube mags. It would probably work better for your ML.

Side or bottom mount, the bayonet to bore relationship would remain the same. 9:00 would be handier for a right handed shooter.

DF

I'd like to build it so I could attach it to the swivel stud the way a Harris bi-pod attaches. Run a very stiff rod forward to attach the MS. It would need to have an adjustment system to move it fore an aft on the rod and up and down to obtain the correct position relative to the bullet path. This may impact POI some, but if using a forend grip anyway, I don't think it would change much. Certainly less than attaching to the barrel. If the rod was very light, like carbon fiber, it may further reduce any POI change.

And, with the MS side mounted, it would be easier to watch where the bayonet was so it was close enough to not miss a shot, far enough to not get blasted.

DF

I'm trying to get the MS off the gun completely, so guns can be swapped out on the bench to let hot ones cool.

DF

That's a good idea to make it a side mount, so to speak. Only issue there is running a Glock for speeds, but I guess that's not impossible, and it's not like I need to hundreds of rounds. My big thing there is watching speeds when I start handloading, as that's my pressure check...what speed I'm seeing.

I'm waiting for Cabelas to update my points on my Visa card. Once the points are showing I'm getting a Magnetospeed chrony.

I like what I've seen and hear so far on the LabRadar chrono. It cost a few bucks and I already have two chronos. Maybe one of these days I'll pull the trigger on one.

DF

I ran my MS for the first time yesterday.

The good- it reads well on my 35 Whelen and 270 Winchester rifles. Only problem is that it wants to walk forward under recoil, so I have to keep an eye on that.

The bad- I couldn't get it to read a 22LR. My 22 has a heavy barrel, so maybe that was it, but no matter which spacer I used, where I positioned it, etc, it would NOT read the 22. I set it to high sensitivity, fiddled with position, etc. No go. Best I could get was an Err2, and the reference chart with the unit basically says "that's a glitch". Awesome.

But otherwise, it seems to work well.

I've started to work on the "flat spot" load development, and if that comes together, it would negate the need to run groups over the MS completely, which would be the best outcome.

I ordered a Magnetospeed V3 today from Cabelas. I'm looking forward to using it. I went with the V3 because the reviews said the unit is better made than the base model. I was holding off to let my points build up with some large home improvements on my card. Thanks again for the input!!