Open top vs tube type chassis for field use

358Rooster

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For the guys with extensive PRS type or other rigorous field use application, what do you see as the pros and cons for each? I've been considering chassis such as Cadex, AI AX, or XLR with the tube forend. I've only ever used open top traditional and my AICS. The thing is, when a guy has to lash to a tree (or pole or whatever's at hand) or bang around through a barricade, with an open top, I tend to contemplate the position and setup enough that it detracts somewhat from the mental part (thinking about range, wind, next shot, time, etc.). Not that lashing around the stocks / barrels of my current rifles has a lot of effect at the ranges I've shot from positions like that (they are heavy), but a lighter barrel and / or longer ranges would have noticeable effects.

As I said, pros and cons? I like traditional and vertical gripped like the A3 & A5 and I like my AICS but have been wondering if others with a tubed forend may be worthwhile to eliminate fussing about certain setups. Thanks guys.

Rooster
 
You see mostly open top chassis and traditional fiberglass stocks (McM A5 & Manners mostly). You do see the odd tube chassis, but not as common.

Most importantly is how the rifle fits you. Also, a flat surface on the bottom is a huge plus for shooting barricades. One of the more popular chassis is the MPA chassis, which has moveable and removable barricade stops on the bottom of the stock, and multiple mounting points for barricade stops, bipods, tripod mounts, etc.

In my PRS experience, I have never seen a rifle "lashed up" for a stage. Unless a stage is designed by a match director to be "lashed up" I highly doubt you will ever see a competitor do it, due to the time it would take to do so. PRS is a game of building a position quickly.

A flat fore end will be much more beneficial than the ability to "lash up". I really can't think of any particular advantage that a tube chassis would provide over an "open top" chassis for PRS type work.

And if you are worried about scratching up your rifle - well you will need to get over that pretty quick for this sport. Scratches are definitely going to happen, but I think it just adds character to the rifle ;)
 
Not sure what you mean by lashing... but, one thing some people do is install a night vision mount. This lets you put downwards pressure on the front of the stock without touching the barrel. The MPA comes with one of these. But, you can get them for McMillan and Manners fiberglass stocks as well.

PRS is definitely not for safe queen rifles. This was my chassis after owning it for 1 month:

 
Here is a pic of the night vision mount:

fon341.jpg


Some guys install them just to that they can wrap their thumb over top or attache a bag without it pressing on the barrel.
 
If you like the traditional style of stocks, such as the McM A5, get one with an Anschutz rail and NV mount. The Anschutz rail creates a lot of mounting options for tripods, bipods, barricade stops, sling mounts, etc. Honestly, I'm surprised they are not utilized more often on fiberglass stocks.

I have two rifles with McMillan A5's, one has an Anschutz rail and I really wish the other one did. I'm planning on getting a 6xc built for my next match rifle, and it will definitely include an Anschutz rail and NV mount.
 
Yeah, poor explanation, I suppose. By lashing, I mean wrapping a sling from the front sling mount around a tree (or...) and back around the barrel / stock or using a rope or strap. I don't compete. If I ever find the time, I'd like to but it's not likely to happen for a while. I do this kind of stuff with a small group of local guys for sh!ts and giggles and we've set up my range to support this (complete with trees to lash to ;)). I very much dislike static shooting disciplines.

And no, I'm not a rifle 'collector' - mine are tools just like my trucks. They get used....hard.

Thanks guys, good points about the flat forend and the NV mounts.

Rooster
 
Here is a pic of the night vision mount:

fon341.jpg


Some guys install them just to that they can wrap their thumb over top or attache a bag without it pressing on the barrel.

Any idea which mount that is, komboyach? Wrapping the thumb is most often what I've been doing when needed but just experimenting is where the 'lashing' comes from.

If a fella was tooled up a bit, the Anschutz would probably be pretty good with the MPA barricade stop idea. Bit of a modified mounting method and you'd be off to the races. Although a T-nut wouldn't be nearly as convenient as MPA's detent. Is the Anschutz rail strong enough for that, though? I haven't had any use with them. I have an A3, some HS Precisions and the AICS which already has a bottom slot (though I don't know much about options for use of it).
 
Accurate Ordnance. The ones PGW makes should also work. They make one for the McMillan A5 for thier rifles.

I think the Anschutz rail itself is pretty strong, but it needs to have enough anchors if you want to use it for anything that is going to see a lot of torque. Some smiths just put one at the front and one at the back since it normally doesn't see much torque.
 
For the guys with extensive PRS type or other rigorous field use application, what do you see as the pros and cons for each? I've been considering chassis such as Cadex, AI AX, or XLR with the tube forend. I've only ever used open top traditional and my AICS. The thing is, when a guy has to lash to a tree (or pole or whatever's at hand) or bang around through a barricade, with an open top, I tend to contemplate the position and setup enough that it detracts somewhat from the mental part (thinking about range, wind, next shot, time, etc.). Not that lashing around the stocks / barrels of my current rifles has a lot of effect at the ranges I've shot from positions like that (they are heavy), but a lighter barrel and / or longer ranges would have noticeable effects.

As I said, pros and cons? I like traditional and vertical gripped like the A3 & A5 and I like my AICS but have been wondering if others with a tubed forend may be worthwhile to eliminate fussing about certain setups. Thanks guys.

Rooster

I find round forends like say on an AR is great for moving around and shooting but really is a pain if you are trying to rest on stuff. Of course, you can have rails and attachment points but then you end up "squaring" the forend.

I would not want a tube forend on a PRS type rifle. I do like the front NV rail though... often, I want to grab around the front of the stock and having a cover there would be very useful.

I thought covering the barrel would be important when bags are strapped on but I am finding that strapping over the scope actually works better so nothing is touching the barrel. So open top stocks for me.

I am dabbling in mag fed bolt rifles again and like you, much prefer the traditional stock layout ala A5. My current stocks are the Boyds pro varmint. Didn't take long before the rounded forend got milled flat on the bottom and flats on the front of the forend sides.

15156970_340980409610327_339283973025108854_o.jpg


Various T slot (Anschutz dimensioned) rails added for stops, clamps, bipod and tripod mounts. Fun making up stuff to slide on for various tasks. Some ideas have been total duds but some are helping me with positional shooting.

If you visit my facebook page (mystic precision inc), I have pictures of the mods I have done so far and will keep adding them there.

15577915_353775678330800_5245949690256196497_o.jpg


Came up with a barricade clamp system. Holds the rifle in place and so far pretty quick to use... but unsure how well it will work under match conditions.

15129682_340979926277042_6476326848861217268_o.jpg


The rail makes it easy to move stuff around so you can find the right balance point for whatever "stop" you dream up. And the flats make it far easier to have stable rests on barricades or on bags.

Been alot of fun and there are certainly very stable ways to support a rifle without having to strap it to something.

Next up will be bags of various shapes, sizes and fills.

Jerry
 
Lots of AI AXs and AI AX chassis get run in PRS circles. I think whatever you practice with can be used just fine.

I do think someone mentioned earlier most are not truly round and more octogon or hexagon shaped so they normally have a good flat spot
 
Lots of AI AXs and AI AX chassis get run in PRS circles. I think whatever you practice with can be used just fine.

I do think someone mentioned earlier most are not truly round and more octogon or hexagon shaped so they normally have a good flat spot

Just because some people run it, doesn't mean it's the best tool for the job. Sure it will work, but there are products that are more purpose built for PRS type shooting. A wide flat forend will be a lot more stabile than a forend that is round or hexagonal in shape.

Can you make it work? Certainly. Is there products better suited for this application? Absolutely.
 
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