thinking

J

j mckinnie

Guest
hurts.there are beleifs that a barrel should be cut where it is determined the tight spot at the muzzle is felt after slugging to find such a point,could the gain twist be making this tight spot continuously thus any length is said tight spot.
before you burn think it hurts
are we really tuning vibration only or are we actually finding are neutral tourque balance in the deal im no engineer so the big words arent going to work for me.
remember a theory is a accepted idea not a concrete fact so in theory??:confused::confused::eek:
this might even make the original list of wierd questions
 
Mckinnie

The idea behind the gain twist, (supposedly), is that the bullet does indeed remain "in tension" in the barrel for the entire length.. I have seen gain twist that shoot really great, and some that are no better than the average good barrel.

But gain twist is not the same as slugging. A barrel can be a gain twist and still be perfectly straight from end to end. It's an entirely different concept.

There is a lot written about 'slugging' barrels, finding where to cut it, indexing, and all sorts of other things. Sounds good on paper, looks good in theory, I do know one shooter who does it. Ralph Stewart. His Rifles shoot pretty darned good.

All of this probably has a lot more merit in Rimfire, where the pressures are miniscule compared to Centerfire. Remember, when a barrel is hit with 70,000 psi, it is not dimensionally the same at the breach end as it is when laying on a table in a static state. This is what barrel makers such as Krieger keep telling everybody, and is one reason they strive to keep thier barrels as straight in the groove diameter as possible.

But what do they know...........jackie
 
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the thought

was that the gain twist could be crowned at any point and still be the tight spot i too shoot Kreiger barrels and find them good but am willing to shoot ot
hers like Bartlein if the chance arrises.
the tourque thing is the one that i find intresting because as the barrel is following its figure 8 pattern tuning out the tourque would theoretically squeeze the sides of the 8 shape narrower theoretically speaking:eek:
 
IMO the idea that the gain keeps the bullet "in tension" better is flawed. There are two ways to "keep tension on the leading edge" of the bullet, acceleration and gain. Of the two acceleration FAR overrides any (theoretical) gains to be had from the weinie liddle gain twist.




??

al
 
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