Archangel(pro-mag) stock Mosin

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skizzums

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hey guys, I don't think a lot folks on here own this stock, but I am going to ask anyways. the stock is really nice, locks up super tight, I don't believe it needs any bedding. I am working up loads and have had some really great days and some pretty awful days like yesterday. my question is, the barrel tensioner, why? I immediately tossed it in the toolbox when I got the stock because it goes against about everything I have ever learned about rifles. I have always earned I need to be able to slide I dollar bill from front of stock to the lug to have the rifle perform it's best. but I went and googling, and found gunboards.com, I registered to hopefully get some insight from those that have used it. that site and many other have lots of posters and youtubers stating how much their groups have shrank adjusting the barrel tensioner to such and such height. here is a pic of the tensioner so you can understand what I am talking about....

full extended

free float

so, your tightening the gun into the stock really snug, and then added upward leverage about 5" up the barrel. can anyone explain why this would be beneficial for some? I am sure they didn't engineer and make the part for nothing(well, could be a gimmick). but I do hear positive results. you can't help but notice accuracy degrades as rifle gets hot, I was thinking maybe this would keep it more consistent during periods like that, but would it, could it, actually improve accuracy and why?
thanks
 
Technically, that doesn't appear to be a "tensioner", since that implies a device that puts pressure end-to-end, so as to stretch the barrel between two points, similar to the Dan Wesson revolver design

What Archangel is calling a tensioner appears to be a "pressure point", which is simply changing the harmonics of the barrel by applying upward pressure.

It can make things better or worse, so it won't hurt to experiment
 
What Archangel is calling a tensioner appears to be a "pressure point", which is simply changing the harmonics of the barrel by applying upward pressure.
Click to expand...

This ^^

Traditionally, cork has been used to create these contact points between the barrel and the lower stock.

Just Google "corking Mosin-Nagant barrel"...
Mixed results. Sometimes it may help, sometimes it will make harmonics worse.
The rule still holds for the MN just like every other rifle- every barrel is different.

As I've mentioned before, the long- and thin profile of the military barrels sometimes have "issues" with harmonics. IMO, not unlike the "pencil-barrel" Mini-14's of old.
 
Pressure points under the barrels of factory rifles can often help a rifle with poor bedding be more accurate, but good bedding and a floated barrel will almost always shoot better.

Exceptions could be if a barrel hasn't been properly stress-relieved, or if you have a design like the 10/22 with only one screw to anchor the receiver and you put a heavy barrel on it.

When a barrel heats up after several rounds, if it has pressure points under it, it will tend to "walk", moving the point-of-impact higher and higher (or whatever direction the barrel is being pushed) as the barrel gets hotter.

Just experiment with the little pressure point thingy and see what happens, you've got nothing to lose.
 
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