model 70 winchester 22-250 bull barrel


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robs257
April 27, 2007, 08:30 AM
trying to find out the barrel twist, the rifle was made in 1977 , want to reload some 63 gr. boat tails , i was told being an older model rifle the heavier grain bullet might not perform as well.

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JesseL
April 27, 2007, 11:59 AM
Even if you find what the twist is, the only way to know for sure if your rifle likes the 63 gr bullets is to try them.

robs257
May 5, 2007, 06:53 AM
thanks for your input.

Chawbaccer
May 5, 2007, 08:57 AM
Lyman 46 setting right here says you have a 1 in 14.

jlmurphy
May 5, 2007, 11:56 AM
You can check the rifling rate by using a tight fitting patch on a jag, make a flag from tape on the rod, simply push/pull until the tape rotates once and measure how many inches the rod has traveled.

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