Years ago I built myself a a very light weight deer rifle 6mmBR on an old shot out Tikka LSA 55 I fitted a new donor .243win barrel from a Sako Finlight and it shot 90gr Nosler BTs very well.
I had read all the warnings of how badly this cartridge fed in repeaters but I was still keen to give it a go.
I finally did get it functioning perfectly after a lot of faffing around with the mag and feed ramp etc but the biggest win on getting it to feed was cutting a deep throat to seat bullets out as long as you can.
Ballistics are fine on any game a .243Win is.
After selling it I always wanted another one but only just got around to building another one this year. This time I chambered it in 6mm Dasher Norma with a 1-9" twist shooting 95gr Nosler BTs and it performs great! the slightly longer fire formed case behaves a lot better with the feeding but still drops the odd case back into the action instead of ejecting it due to its short length.
![]()
Bookmarks