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Rear bag setup.

Guys, I have a Protektor #13A rear bag.
This one...
https://protektormodel.com/collections/standard-rear-bags/products/13a-rabbit-ear-rear-bag
I use it for my indoor benchrest (rimfire) shooting at 25 yards, and my rifle setup is a CZ457 varmint in an Oryx stock. Sightron Sll 36x scope.
Have a bag slider fitted too. I needed more rear elevation and tried a spacer under the rear bag, but thought the slider was easier (one less thing to add on when I'm setting up on the bench).
Slider is 20mm diameter stainless bar mounted to 9mm alloy plate.
Front rest is an alloy Bald Eagle that even when right down didn't allow me to sight the bottom line of the target so I needed to lift the rear of the rifle upwards...and all is good now.
I have packed the rear bag quite full...not rock hard but firm for sure. Ears are packed 'not quite' firm (but not soft).
My slider sits right down into the 'V' between the ears and runs on the top of the bag (not held up by the ears).
I do get the odd shot (usually a tad low) where I think "Eek...that's bad. How did I do that"?
Is that because my bag slider is sitting right down hard at the bottom of the 'V'?
I notice the #13A bag has a slight 'rock' to it. The hard bottom doesn't really do me any favours (but the perceived wisdom of the club where I shoot said get the hard bottomed bag).
I could buy a 'doughnut' sand bag to fit under the #13A, or buy a 'normal' #13 bag (soft bottom).
Currently have used the bag with the slope (Protektor 'Eagle' logo) facing forward. Will try later this week with the 'Eagle' (sloped surface) facing rearwards towards the shooter.
So...is the slider running at the 'V' bottom cause for concern? If so, what to do? Pack ears harder to stop the butt/slider going too deep into the 'V'? Put a soft (foam) spacer down in there so slider isn't sitting hard onto the leather?
Is the hard bottom of the #13A bag a problem (yeah, it's hard leather and certainly not flat. Thump it hard onto bench to try to make it sit flat but it still has a wee curve to it).
Buy a better and softer bag? Maybe the standard #13 bag?
I have a 'wrecked' neck from previous work injury so I can't sort of 'float' my head above the stock. I do need to actually hold the rifle and rest my cheek on the cheek rest to support my head. No freestyle shooting for me.
Thanks for your thoughts/comments.

Slider1.JPG
 
A different model Protector bag with a more solid handled base will help your bag be more
stable...I had lots of issues with the one your using.
I like the bumble bee bag.
Get the stitching between the ears to match your slider.
 
If you ever decide to try a different bag rider I have one of these on my CA MPR and they work great.Gives you about 1.5" of precise vertical adjustment using a thumb wheel and they make one for the Oryx chassis.


I've got this adjustable bag rider, as can be seen in my avatar. It works great and I love it.
 
Get the stitching between the ears to match your slider.
Thanks...so by that I take it that you mean it's OK if the slider runs down along the bag (right down at the bottom of the 'V' between the ears?).
I agree about this bag and 'issues'. May just get a new bag anyway.
Thanks guys re the adjustable slider (ABR) info.
It looks great, but as I only shoot (at the moment!) indoors 25 yards I have the rifle sitting where I need it now. But I will certainly check one out when I get around to being adventurous and trying (gasp) outdoors benchrest. That will be a whole new ball-game I'm sure.
 
SEB bag arrived today.
It's larger than the Protektor #13A bag, and man it takes some filling!
Good sized loading 'tubes' (and that's needed too)...bunged in about 4kg of Fine, washed aquarium gravel/grit (it's black, heavy, and not too coarse).
Certainly a step up from the old Protektor. Way more weight and a wider 'footprint'...I'm sure it will be more stable.
Happy camper so far.
 
I think your going to like it just fine...
You may need to take out some sand later ...or not.
Go put some miles on it...and see how she does.
 
First test today...love this bag.
A tad higher than the Protektor, but oh so stable and also quite grippy underneath.
CZ performed well, and shot some nice wee groups while also playing with my new Lowey barrel tuner.
Have just recently fitted a Sightron Sll 36x42 scope and Burris Signature rimfire rings too.
The entire package is shooting how I want it too.
So yeah, the SEB bag is a winner.
All up I'm now a very happy camper.
Thanks for your help guys.
 

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