My question: No.4 rifle barrel where are barrel knots? How did Britishicon engenner to calculate barrel harmonics to estabilish 3-7 pounds upward pressure in order to get tight groups?

Jay Sweet wrote in 1954 that an engeneer calculated in the early '50 knots and anti-knots of No.1 Mk3 bull barrel. Knots are barrel points where barrel itself remains still during the time bullet will exit the muzzle. Knowing those points we coul try a specific barrel bedding while the receiver in still bedded for military handbook.

Yuryev , a russian who wrote about Mosin Nagant and their thin barrels told to cover barrel surface with chalk or other light powder and shoot a few rounds. The place of the barrel where chalk/other powder still remains , those are barrel knots. Those places we could create a contact between barrel and fore end in order to avoid extremely thin barrrel consequenceses. What do you think?
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