Re: 270 Win load question
My 1st 270 Win was a Rem M700 BDL purchased in 1981. The load I settled on was a Seirra 130 gr SBT, RP brass, CCI-200, and 55.9gr IMR-4350. Later that load was crono'd at 3003fps out of the factory 22 inch barrel.
I have also had good success using the Nosler 160 Semi-Spitzer with that rifle for a dark timber elk hunting load. I used H4831 in that load. This is an awesum load for close encounters under 200 yds.
5 yrs ago I sold that M700 - big mistake!
I have since replaced that 270 with a Tikka T3 Lite in 270 Win, This rifle developes pressure at lower muzzle velocities when using H4831. It was interesting that one fellow said he was getting best accuracy, but got lower velocities using H4831 too. I ended up settling on 59.6 grs of H4831 under a Seirra 130 gr SBT at 2950 fps in the Tikka. I am thinking I will give IMR-4350 a try once again and see how the Tikka likes it. I did make a 386 yd one shot bang flop kill on my buck this year. Last year I only had to reach out 80 yds.
This year I helped a guy get a 3pt buck off the hill that he shot with a Federal Premium factory load using a Nosler 140gr AB bullet. The performance was excellent. leaving a 1.5" exit hole in the opposite shoulder. I was very impressed with the post-mortum analysis. He said his deer was a bang-flop too.
Anyways, the bottom line is these 5 powders seem to get the most "PR" with the 130 to 140 gr 270 Win reload info: IMR-4350, H-4350, IMR-4831, H-4831, & RL-22. I have also heard claims that WW brass has slightly higher capacity as compared to RP brass. You will be exceedingly pleased with that 140gr AB.
Snohomish Co. Washington
NRA Life Member