6UM Stock Help

treillw

WKR
Joined
Mar 31, 2017
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MT
Have some questions on stock geometry for building a 6 UM (recoil to be on par with a 6.5 Creedmoor shooting heavies). Rifle to be used from the prone shooting position predominately and never shot from a bench - field use only in the mountains hunting.

I have a relatively lightweight 300 win (cooper model 92) with a traditional shape sporter stock that I'm currently shooting from the prone position - the bottom of the rear of the stock (toe, I'll call it) has a pretty decent slope to it. If I change between modest preload and a very relaxed preload, I typically see around 1 moa shift in vertical at 100 yards.

I have another rifle (RPR) and the stock toe has no slope to it. I find that when shooting prone, minor crosshair elevation adjustment tweaks are difficult, seemingly due to the lack of slope. As I think about it more, it might be because I was using a leather rear bag and heavy sand during much of this time of frustration - difficult to squeeze to tweak elevation. I was fussing with the bipod height constantly and it's far from ideal for hunting situations, where time and stealth are of the essence. I have since swapped out the flat bottom factory stock to a magpul PRS light, which has a modest toe slope - probably along the lines of an EH1, or similar.

Hopefully that conveys my experiences and sets up my questions. I want a stock that will eliminate the vertical shifting I'm seeing with my 300 as much as possible (caused by sloped stock movement on the rear bag), but also still be practical for quick vertical adjustments in the field. I guess it boils down to are you able to easily make elevation tweaks to rifles with flat stock toe slopes and what rear bag would you use to do it? Keep in mind that the rear bag shouldn't be a boat anchor, as it will be carried hundreds of miles through the mountains over it's lifetime.

I'm also seeing new style stocks with "reversed" cheek combs, like the McMillan Mountain Tracker LR and Rokstock. For these stocks, the cheek comb is higher in the rear than in the front and they generally have a very flat toe slope. I think I'd like the flatter toe slope, but having the cheek comb reversed or not level seems odd to me. Thoughts on this? I don't feel like I've ever had issues with a stock punching me in the face under recoil with any gun.

Stocks I'm considering: MDT HNT26 chassis, adjustable McMillan ELR Hunter, McMillan Mountain Tracker LR, Manners EH1, Manners pro hunter adjustable folder, Manners long range hunter, etc. The folding option would come in handy at times, but don't absolutely need it. The folder HNT26 seems to weigh as much as some of the traditional stock models, or only saves a couple ounces - don't know if I would like its geometry as much as a traditional stock. I definitely think the short toe length of the HNT26 could be a pain for rear bag placement. Thoughts?

I suppose any of these options would work. Trying to make it as foolproof as possible for me and kids shooting the rifle. Ultimately I don't have a strong preference shooting my Model 92 or the RPR prone. Standing, I'd probably prefer the Model 92 for quick shots. Sometimes typing all this stuff up helps me come up with answers myself, as I'm forced to think through it all. How is the HNT26 shooting freehand? My RPR is a boat anchor and I've never attempted to shoot it freehand - trainer rifle or truck gun.

I have an NX8 4-32x50 that will live on the rifle. Think I need an adjustable cheek riser?

I appreciate any help. Thanks!
 
I’m trying mine in a wooden rok stock. That being said I’m going to have manners pro hunter at my house as a back up plan and maybe do some unscientific testing between the 2.
I have a rok stock on my 22 trainer getting the feel for it as well.
 
I prefer the flat rokstock over the hnt26 for prone shooting for the reason you stated. It is much easier/quicker the manipulate the rear bag to where I need it. Compared to stocks with sloped toe, I’m still giving a slight edge to the rokstock.

I will also say that since getting the rokstock I have had a lot of different people shoot it (women children men) and no one has issues finding the target, getting stable, and making a good shot (distances they have never attempted before). Everyone has said it’s the “best” gun they have ever shot.

The HTN26 is a great stock and obviously packs nice with the folding stock. I will continue to use both depending on the type of hunt I’m on.
 
As I think about it more, it might be because I was using a leather rear bag and heavy sand during much of this time of frustration - difficult to squeeze to tweak elevation.
After reading all of that my takeaway is you need a different bag. Not too squishy not too firm, easily squeezed for elevation adjustments. There’s tons of threads about which bag. You might have to try one or two or three to find what works for you. The right bag will work across a variety of stock designs.
 
After reading all of that my takeaway is you need a different bag. Not too squishy not too firm, easily squeezed for elevation adjustments. There’s tons of threads about which bag. You might have to try one or two or three to find what works for you. The right bag will work across a variety of stock designs.
I have three bags - leather bench rest style bag I use mostly for load development and checking zeros, a LRO hunters wedge or whatever it's called, and a red tac gear bag about the size of a soda can.

I liked the red tac gear bag, other than it being relatively heavy. I lost it in the mountains chasing a muley buck a few years ago. The bead shape in the bag fill allowed for pretty much vertical movement with a squeeze. Maybe I need to go back to that.

I'm pretty sure I was annoyed checking the zero with the flat stock rpr and leather bag. Not much you can do besides tweak the front legs. It's been a few years since I got rid of the factory RPR stock.
 
There is a reason you rarely see a rokstok come up in the classifieds
How can I say this nicely.... Haha

The rokstock reminds me of an ugly semi-deformed canoe paddle. 😬

I'm sure they are good to work with once you get used to them. I don't know how I feel about the reverse cheek comb slope.
 
How can I say this nicely.... Haha

The rokstock reminds me of an ugly semi-deformed canoe paddle. 😬

I'm sure they are good to work with once you get used to them. I don't know how I feel about the reverse cheek comb slope.
I leave form over function to interior decorators. I have 2 Rokstoks and my next stock will be one also.
 
I have three bags - leather bench rest style bag I use mostly for load development and checking zeros, a LRO hunters wedge or whatever it's called, and a red tac gear bag about the size of a soda can.

I liked the red tac gear bag, other than it being relatively heavy. I lost it in the mountains chasing a muley buck a few years ago. The bead shape in the bag fill allowed for pretty much vertical movement with a squeeze. Maybe I need to go back to that.

I'm pretty sure I was annoyed checking the zero with the flat stock rpr and leather bag. Not much you can do besides tweak the front legs. It's been a few years since I got rid of the factory RPR stock.


It’s $500 that you could resell nearly instantly.

You want a 6UM, get the stock designed by the same people for pure shooting performance. Or, get a ROKStok lite that are coming- cause it looks better.

If you get either one of those and legitimately shoot it in field positions- several hundred rounds, and you don’t like it; I’ll get shoot2hunt to give your money back.

And get a better rear bag- all of yours suck for field shooting. The shoot2hunt Jellyfish is the way.
 
Yeah wait for a Rokstok.
Shot my 223 with a factory stock today. She shot good. But damn. The Rokstok is like a fine black woman. Can't go back to anything else!
 
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