Bag front rest

I have two metal adjustable front rests for bench shooting but I still get a little wobble with the rifle. So, I bought a Caldwell Tactdriver bag rest. Iv'e never used this type of rest, but it looks like it might stop the wobble problem. Anybody tried one of these rests yet? Are they steady or have I made a mistake? I think i'm going to fill it with long grain rice , instead of heavy sand. It looks to be big in the pictures, so the sand might make it to heavy. Any suggestion would be appreciated.
 
They are nice bags, but they are "large". I filled mine with dry oil absorbent. Just a little lighter than sand, but still a bit heavy, just depends on how far you are going to haul it? Keep in mind if you fill with rice, you might attract vermin. If they find it, they will chew a hole into the canvas material. I would recommend filling with plastic pellets, you can get many kinds and sizes at your local crafting hobby stores. If you want to keep it real light, you might try poly-fil bean bag filler. I even used biodegradable airsoft BB's that I got on sale at Wal-mart to fill one of my bags. Nice and light, but the pellets are a little larger, but work fine.

Here are a couple of ideas you can use:

https://www.pinterest.com/pin/24488391695524427/

https://www.joann.com/poly-fil-biggie-16-oz.-bean-bag-filler/14311716.html



https://www.joann.com/poly-pellets-96-oz.-weighted-stuffing-beads-bag/15532179.html?utm_source=google&utm_medium=cpc&gclid=EAIaIQobChMI2sK54tqb3gIV27XACh3gVA5CEAQYASABEgIpAfD_BwE
 
I'll be able to get involved in my colleague's theme ... I bought two bags - front and back "rabbit ears" from AliExpress.

I filled them with plastic granules - somewhere about 6 pounds went ...

But I do not know if I'm suggesting it, but it seems to me that shooting with Hatsan 125 TH Vortex 22 on my throat worsens the accuracy for them - I think that because the stuffing is getting down, it's just like shooting on a stiff footing?

In this connection, I want to use some rest that can fix the rifle fixed in the front and part? Any suggestions for such a rest?

I was wondering about Vanguard Porta-Aim, but it seems to me that this Velcro tape will not fix the rifle firmly enough and make it difficult for me not to shake too much?

I also watched these bag rest where my colleague thinks - where the rifle lies on a rest in a bigger part and so maybe it will have a better fix? What do you think?

Greetings.