Actually I use the same style rest ( until 2 weeks ago My wife bought me a Caldwell Rock BR) but it is the Lyman and My rear bag is similar it is a caldwell You really need to shoot off a table to enjoy your hobby more You groups will be tighter
I went thru my 243 target file ( I save every target I shoot good or bad) It tells me a lot when I refer back to the data.
I knew I had some good shot groups with Bullshop's RCBS 95 Gr cast bullets I bought from him
This is one of the better if not best 10 shot groups I shot at 100 yards
Also They were copper gas checked Lubed with Ben's Red and a BLL overcoat
( Seems I shot a lot of 100 yard targets with the 243! with speedy loads back then ....now I only shoot 50 yds most times)