taper vs accuracy

cakgor

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Jan 28, 2014
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What effect does barrel taper have on accuracy. Building a Mauser 98/.308....buying blank,have full machine shop.
 
Generally speaking, the more mass your barrel has, the less susceptible it is to harmonics (whip). Also, the larger the cartridge, the more mass you want in your barrel... again, a harmonics thing. Sendero and Palma contours seem to usually produce very good accuracy.
 
There is another affect of contouring barrels; bore dimension changes.
With button rifled barrels, you need the lapping done -after contouring. This because bores grow with contouring them.
Little to no affect to cut rifled barrels -once up to stable shooting temps.
Hammer forged barrel bores actually shrink with contouring. This can work to provide choking toward the muzzle(taper bore), which can be beneficial.
 
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