dwell is not the only factor. gas port size is directly relational as well. all things being equal, using mil pressure ammo, GP of .060-.070, dwell of app. 20MS works best. this is reflected in 20"/rifle gas, 16’/midlength, and 14.5"/carbine.
my V5LW has a 16" barrel. my V1 has had the barrel shortened to 14.5…
Just in case anyone is still in the same boat I went with the V5 for my first rifle. I’ve pretty much shot just about all sorts of ammo to include wolf, tula, herters plus the good stuff and it’s been flawless through it’s first 1000 rounds so far. Granted that’s not much in the grand scheme of things when it comes to determining reliability but it’s been good to me.
I agree.the midlength just feels better but to each is own
Correct, but it’s a huge factor and one that should still be considered. Of course using mil pressure it’ll work. I was only stating my experience with less than ideal ammo and or conditions.
Same here. I went v5.
I also felt the with the supressor, the carbine was over gassed and beating the crap out of itself. Brass was flying 50 or 60 feet.
I don’t have a V5 but I have a V1 and V7 and I love my V1… I can tell no perceivable difference in recoil and since both are irons only guns, I prefer a FSB.
First off both are great choices and you can’t go wrong with either. For me the decision would largely boil down to my optic selection. If I was running an aimpoint on the rifle and setting up more towards home defense I would probably go with the V1 due to my preference for a fixed FSB and a fixed BUIS. If I was planning to use a magnified optic such as a 1x4 variable, I would definitely go with the V5.
I own a couple V5 one a LW the other standard. Both are great rifles it just comes down to if you want a FSB or not. I do not like the FSB as I run an Aimpoint and do not like th cluttered field of view I get with a standard FSB. On the LW V5 I have a set of Magpul MBUS and on the standard V5 I have a set of Troy flip ups. The V5 will give you more options especially if you decide to change rails down the road but at the end of the day both are great, top of the line options it just comes down to personal preference.
My personal deciding factor was the ability to change out rails. I went with the V5 and have since installed a NSR 15. That would have also been possible with a V1 however much more labor intensive and then im left with a cutout rail. ??? Not much to do with a specific cutout rail except sell it.
of course dwell should be considered. but dwell and GP are both factors on the same side of the equation affecting pressure and cyclic rate. changing one should require changes to the other but they’re both relatively permanent factors - once you choose a gun, these are decided.
you can destructively adjust this by cutting down the barrel if overgassed, or drilling the gasport if undergassed, but these are not reversible. what is reversible or adjustable, to some extent, is matching the buffer weight and spring rate to the pressure of ammo you’re shooting. but this won’t cure all ills. in all things it makes sense to start with specs in the sweet spot I mentioned before.
this thread is about two uppers - midlength vs carbine with different dwell time from the same manufacturer. my statement was pointing out the differences other than rail and front sight configuration. if you want a gun that will shoot commercial grade ammo more reliably, I would choose the 16" carbine rather than the midlength, or a 14.5" of any configuration…