interarms barrel twist rate?

[DSMITH]

I have had an Interarms Mark X in .22-250 since the '70's. I would like to know what rate of twist is in a factory barrel. Have had best luck with 52 grain sierras but would like to play with some different weight bullets and just wondered what twist these barrels came with.

[John Traveler1]

Interarms had various sources for their mauser-type rifles, including the former Yugoslavia and Spain.  They may have used different standard twist rates.

It's easy enough to verify the twist rate for yourself:

Use a cleaning rod with a tight patch on a slotted tip (to prevent slipping) and insert into the more.  Mark the rod with a felt-tip pen.

Use a piece of masking tape to mark your cleaning rod, and push (or pull it out enough for one complete revolution.  The distance between your starting and stopping points on the rod is your twist rate.

[DSMITH]

thanks John, I hadn't thought about it enough to consider checking my own.