Ishapore Enfield 2A and 2A #1 barrel twist rate

[civilian75]

What is the twist rate of the 308 caliber Enfield? I want to build a mostly-sub-sonic 308 rifle on the cheap and though of the Ishapore, but I need the 1 in 10 fast twist for the heavy & long slugs I have in mind. I suspect it is 1 in 12 since most 7.62 NATO is light ball. Can anyone confirm?

 

[Candiru]

I measured my Ishapore's twist today. It's 1:12.

For those who don't know and are interested, there's an easy way to figure out the twist: Push a bore brush on a swiveling rod all the way through, then start pulling it back. Make a mark on top of the rod at some reference point, then continue pulling back until the mark rotates around to the top again. Measure the mark's distance from the reference point, and that's your twist rate.