I built my Whelen in 1966. It is 1903 Springfield with the original barrel rebored with 1:10 twist. It has a long throat and shoots 280gr and 300gr bullets easily. Consistently groups 5 shots inside an inch, and I predominately shoot old 250gr Speer spritzers through her.
Used IMR 4895 powder for years, but have switched to RL 15.
Built the stock myself. Has a Timney trigger. Had a new bolt put on it and it now mounts a Leupold V3 1.75 x 6 scope.
I like the faster twist.
Barstooler
