Free: Contests & Raffles.
Benchmark is building me a 264WM that should be ready for pick up in a few weeks. I'm planning to use 140 Bergers and will ladder test Retumbo, Magnum and H1000 as a starting point. I'll let you know what I come up with.
I have a Win. Model 70 made in 1965. It isn't pretty but it's a shooter.130 Accubond51.5 grs. IMR 4350Fed 215M primerNorma Brass @ 2.493"OAL 3.235".303" @ 100
Quote from: CaNINE on September 04, 2015, 06:08:43 PMBenchmark is building me a 264WM that should be ready for pick up in a few weeks. I'm planning to use 140 Bergers and will ladder test Retumbo, Magnum and H1000 as a starting point. I'll let you know what I come up with.With the factory twist i cant stabilize the 140 bergers. I have a load for 130 bergers that i can get about .7 group at 3210 fps. Wanting a little tighter but maybe its just me pulling the trigger that is keeping them at .7 and not tighter.
Quote from: horsehunter509 on September 04, 2015, 06:13:46 PMQuote from: CaNINE on September 04, 2015, 06:08:43 PMBenchmark is building me a 264WM that should be ready for pick up in a few weeks. I'm planning to use 140 Bergers and will ladder test Retumbo, Magnum and H1000 as a starting point. I'll let you know what I come up with.With the factory twist i cant stabilize the 140 bergers. I have a load for 130 bergers that i can get about .7 group at 3210 fps. Wanting a little tighter but maybe its just me pulling the trigger that is keeping them at .7 and not tighter.0.7 is pretty dang good for a factory. I would be happy and keep it like that.
I had a load I shot for years until I ran it over a chronograph. Killed deer but wasn't giving .264 velocities. It was a 125 grain Nosler partition and 62 grains of old H4831. Back then there was a big discrepancy between "book velocity" and "actual velocity". Mine was supposed to be in the 3100-3200 fps range but only came out at 2835 fps. Might have been the one inch plus "freebore" my chamber had. I believe I burnt out the throat doing some load development.I have two pre-64 Model 70's in .264 that need new homes. One is the initial one I bought in 1967 and the other is one I picked up in the 80's. Strange thing is they were close in serial numbers.