I have used Shilen barrels for a couple builds and though the guns shot well I found that they don't last nearly as long , they are softer than alot of other barrels that I have cut on for sure. I like mike Rocks barrels but have heard some things about his delievery times altely , also Kreiger , Hart and Lilja all make awsome barrels , Supposedly Lawton makes a good one but I haven't talked to anybody thats used one , a couple folks whos oppinion I value alot prefer Broughton barrels.
My next two guns will be built with Bartlein barrels as they are cut rifled , available with the 5R rifleing opption and the guys that make them worked for Kreiger and carry the same customer values.
I have a 3 groove Lilja on my 260 and it shoots awsome , their was no differance in fouling from when I shot the first round to the last here lately , meaning none. I clean it after every 15-20 shots just because , I have never shot it till the accuracy fell of but with the amout of fouling after shooting 20 shots I'd say i could probably get 40 rounds through it without cleaning and keep the accuracy.
As for the rate of twist the 1-10 for both should be fine.
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