Figured that would happen. Imagine it's also a by-product of the fact that in trying to save weight, the TRS rail itself is not stiff enough and is flexing.
Bipods are designed with "free floating" barrel systems in mind. The barrel stiffner introduces the equivalent of a barrel touching the rifle stock on a traditional centerfire rifle and the user "loading" an Atlas, Harris or other styled bipod - flexing the stock and affecting barrel harmonics. The air tank is the best place for any 'external' stabilization attempt on the setup shown in the video because it seems optimal when the handguard and barrel are 'attached' with stiffner. The air tank/bottle is not 'connected' to the barrel in a manner that affects barrel harmonics so the bag should give best results without POI shifts.
I assumed this would happen but that is also why the barrel tensioning kit is a CRUCIAL piece of equipment. (Currently only available for sponsored shooters, lil suspect considering SOME people got to use all the upgrades at RMAC and others didn't....but) The TRS rail isn't made the way it should be in my opinion. The way the Backbone top rail goes the ENTIRE length of the gun and stiffens the whole gun is a much better design. Too bad it's ugly. These 2 pieces need to merge.
Good video mate , this confirms what I thought would be the case if I fitted one to my M3. On the face of it if you was just shooting benchrest or using the bipod all the time then it wouldn't be an issue but with my style of shooting I sometimes find It's much more convenient to use a bag instead of the bipod and having a POI shift isn't good enough when pest controlling.
Hi very good content... 👏👏👏👏👏I was advised some guys a few weeks, on one of my Air group about attach the TRS top rail the barrel clamp to stiff the barrel... It's just a cosmetic... I prefer backbone makes all gun stiff and solid and Hein Frommann system to stiff the barrel. I'm going to share it with them now...
Thanks, yes with the TRS the barrel is a lot more protected against bumps and scuffs if you do walk and stalk style shooting. Once I moved back to under bore bipod or bag rider with barrel clamp installed. My setup was perfect again. Will post 220m shots on my next video with my std M3.
I’m trying to make sense of your observations . Just about anything you place on the shroud that Carrie’s the barrel will show a different impact due to weight and droop . Also it would change harmonics . Try taking the barrel band off as well and see your results . My only concern with the Impact has always been the flimsy two Allen screws and larger front Allen screw holding the rail that holds the scope . You are now asking it to hold the scope, barrel and bipod . Just saying .
As cool as the overbore bipods look, I’ll continue using my underbore Accutac as I have the standard length TRS rail on its way to me now and felt it’ll support and not alter my current setup
Obviously that product is crap . I'm glad you made this video. ty I bet the AirMarksman don't do that. also I don't understand the draw to over the muzzle bipods. I understand the theory but in a flimsy gun i don't see that working. Accutac makes wide base arca bipods that are amazing. I think someone was just trying to reinvent the wheel. over the muzzle bipods don't look as cool either so that's a big minus to me.
You didn't do a shot with the rifle just sat on the bag with out the barrel band which will give you another impact point it obvious you will get different POI if you change the way how you support your rifle.
Actually i dont see a problem with the rail but by using the optional barrel band itself, you missed the group shooting without the barrel band using shooting bags and you would see that the point of impact is the same that using the bipod without the barrel band, i have always think that every rifle is for one purpose if youre using it for only bench rest maybe you can use it with the barrel band and bipod and it always going to shoot the same way, but if you are using it for prs that you shoot in different positions i wouldnt use the barrel band so that doesnt affect your poi
that's sounds like the way the FX is built with aftermarket rail not sturdy enough. not the bipod fault. Those half top rails seem to be issue now if built like a true are rail/handgaurd would be much more fidget and limit the twisting
The bore band shifts the barrels point of impact and the handrail mount shifts the scopes point of impact get a stiffer hand guard or mount bipod to the air tank
I shoot left handed and I was wondering your opinion on the magazine location and the left hand shooter's chin/cheek placement. I was considering the use of a Left Hand Cheek Support.
I don't see an issue here besides pushing your barrel around. Added weight or contact will cause this no matter what. Pick a set up and shoot it, switch and rezero by a few clicks.
I did that when i installed the rail. but my grouping was terrible, and i missed soooo many shots, thats when i started looking what was the cause of the problem. this video is the explained what i found...
lol top mounts bipod on freefloat barrel and expects no POI shift. OH LAWD that is rich. Easy fix here if you don't want to change where you mount the bi-pod. 3d print a piece that rund from the bottom rail and locks into the top rail around the air tank. this will change where the load is handled by the shroud. Ideally you woulld make it "V" shaped to really move the load off of the barrel.
