Sabot Shield For Chronograph

[northny]

I held off using my Chronograph with my ML II until I built a shield to protect it from the impact of sabots (and a large THANK YOU to those here who shared your designs in the past...I would not have thought to build one until after I broke something).

First picture is of my set up.


Second picture is the impact of the sabot from only the fourth shot over the chony from the ML II. Sabot left a great impression showing all four petals that were still intact at impact. Load was 43 grains of N110 under 250g XTP which gave 2312 fps



Chrony is from CED. I made shield from scrap I had kicking around. 2 pieces of Aluminum angle iron hold the wood shields in place, two al cross braces rest on chrony and c lamp holds it in place.

[chuck41]

Nice! Just in time too.

[ET]

Northny

This is a nicely conceived simple approach for a Chronograph shield.
It’s not cumbersome or heavy and simply made.
My Tinkers heart is elated when I see something like this constructed from what may be considered scrap components.


Ed

[craigf]

That is really a nice set up. I have the same chrony and used sheetmetal, but yours would stand up better. I don't know how long you have had your chrony, but you will really like it. I especially like being able to send all of the data to my computer when I get home.

[DBinNY]

North, you appear to have wooden dowels in the holes designed for the diffuser supports. I used some soft solid wire (like electric fence wire) for the same purpose and also put flags on top for alignment. I invested heavily in a couple of inches of masking tape and some sharpie ink to color them. When the sabot hits the soft wire it simply lifts it out of its hole, breaks nothing and then you look around to see if you can find it. Works great and is cheap and easy.

[foxgrape]

dougsmessageboards.proboards.com/index.cgi?action=display&board=smokeless&thread=3982&page=1
...an old post, but another way to do it...there are some other "stick" ideas down in the body of this old post...

[northny]

DBinNY
What looks like wood dowels are the thin pointed sticks for shiskabobs. Pretty thin, and I hope they will break off if hit. (they were cheap also-- about $1 for a package of 100?). The wire is a better idea...I have some of that in the shed too.