About 20 years ago I bought a 25 caliber octagon barrel from Green Mtn.  They billed it as being for a small lever action,  but Charlie Dell and I decided it would be just right for a smooth side low wall and we chambered it for 25-20 SS.  Weeks turned into decades and now, for reasons I explained elsewhere, I’m bringing that project off the back burner and trying to finish it.

So, the reason for this post;  I went to the GM web site to check about its twist rate etc, but it’s apparently been discontinued. Does anyone here have that info?  I hate measuring twist rate by hand as I usually get it wrong anyway, so I’m hoping one of my fellow pack rats may have some old GM paperwork stashed away.  Thanks in advance for any help!

Froggie

They missold those as 14 twist; so they were slow sellers. I doubted it and had them check, and they were 10 twist. I subsequently negotiated a deal and bought their entire inventory of about 35 pieces, and they never made more.  

I built a featherweight bolt gun 257 Robert's for myself with one and it is an excellent shooter.

Thanks Dave for that info on the GM .25 barrel . Like Froggy I purchased one of these years ago to go on a LW to make up a .25/20 SS. Back then it was so much easier to import a barrel or liner from the USA to OZ before our respective govts. changed the regulations & made life difficult . It has been sitting out in the shed and I had always assumed that it had a 14 inch twist. I will now have to measure it as a 10 inch twist would be so much better for a HW in .25/35 WCF. 
Spud