OK roper, please give us the whole shebang on the Custom 270 Win. I'm not much interested in the WSM, but others might be. After hearing about the rifle and possibly seeing some pictures, it might be easier to come up with some questions.
My wife does the picutres and she out of town. Was a good article in handloader Apr-May 2006 about a light weigth 270 with a 22' barrel from Lilja with High Tech stock total rifle with scope weight 7lb 10oz build by Sisk rifles. One thing that was impressive was the velocity from that 22" barrel 130gr bullets @ 3181fps,140gr @ 3017fps and 150gr @ 2988fps. I have to admit I'll talk to the barrel guys as to what might be the best twist with the bullets I want to use and then I spend some time with the gunsmith on throating and I'll make up a bunch of dummy rounds every thing is set to the OAL of the bullet ogive. Wyatt makes extended magazine box that will allow for a long seating of the bullets so don't need to worry about overall cartridge length. I do like a bullet with a long bearing surface like the 140gr TSX and Hornady 140gr. I've had real good luck with Lilja 3 groove 30 cal barrels and Hart barrels among others. Standard twist for the 270 is 1/10 since I really don't have a desire to shoot light bullets a 9.5 twist would be nice might add alittle velocity. Use a manson chamber reamer and separte throating reamer barrel finish out a 24" long # 3 contour and I like to use only 1.5" of the chamber part of the barrel I like more of the taper part for the bullets. Of course the action get blueprinted ,stock is bedded,trigger job.
Barnes has loading data for their 140gr TSX max of 54gr/H-4350 and Hornady has a max of 53.1gr/H-4350 with their 140gr bullet the 54gr/H-4350 with 140gr TSX @3172fps with 53gr/H-4350 and 140gr Hornady @3047fps. I worked all those loads up to a max and like I say it's not in the barrel length the two inch longer may account of the increase over what Sisk load for his 140gr bullets he used Honadys SST/Nosler Accubond.
I just happen to hit it right with the TSX and I think some of it is the twist/throating. Sisk had a load of 58gr/H-4831 with 150gr partition @ 2941fps I used 55gr/H-4831 for 2940fps and he had one load with 150gr bullet out of that 22" barrel @ 2988fps. There is no down side to any of it if I didn't get any gain so what. Still have a good shooting rifle and maybe rebarrel it to something else who knows. I didn't run a bunch of reloads testing every powder or bullets.
Just to set the record straight I'll answer any question but I won't answer any question that is cherry pick to make someone look like their some kind of expert in their own mind. When they don't get what they like then it starts with the name calling or insulting me and I think this site is better than that. So this is my last post here bye
