Home Forums Reloading Big Game Rifles Getting a .257 Roberts to shoot Nosler 100gr. Partitions

I have a custom small ring Mexican Mauser with a Douglas barrel in 257. She absolutely loves 42.5 grains of IMR-4350 with a 100 grain Partition. WLR primers make her hum right along....the only rifle I've ever had that didn't prefer 210M's. She is a rather strange rifle in that I've never had to trail the first deer ever with this rifle...not one. I've shot hundreds with this rifle. She was a gift to me by a man that was a second father to me of sorts. He was dying of cancer and it was gifted to me before he passed. His funeral was on the Thursday before our rifle opener on Saturday. I was a pallbearer and knew as I was taking him to the cemetery what rifle I'd be carrying in two days....I knew I'd have some luck. Sure enough, I had been in my stand about 15 minutes on that cold morning and low and behold a nice buck shows up at about 75 yards away. With that buck, this rifle's incredible string of one-shot, DRT, kills began for me. The biggest buck I shot with her was a huge 8 pointer scoring in the 140's that dressed at 240#. DRT. She's a wicked little gal and always shoots under a half inch at 100 for me.

Good luck with your rifle.

My Roberts is on a re barrelled Montana ASR action that used to be a 270. I did try some 110gn ELD X in it and got them up to 3,091fps with 47gn H4350. But the rifle seems to prefer the 117gn SST with 48.9gn H4831SC. That load killed a big boar on its first outing at 178 yards DRT. No movement at all. Sometimes the Roberts just won't shoot shorter bullets.

That's akin to reading about a shoe size.

Shaking my head...and laughing!

Hint..................

WTF would you know Dip Stick except how to muck up a thread with your gibberish. Hint and laughing at your pathetic crap so go right ahead and shake your head I can hear the rattle from here.

I have more issues with the 85 BT than than the 100 NPT, dunno why.





But sometimes the shorties work OK.



1/4 bores can be a little curious like that.

With a favored powder, try a modified Berger OAL seating test. Berger has you test something like .005", .040", .080" and .120" off the lands in 3 shot groups; 12 round test. When I have a rifle where I may have a potential powder charge that would compress the living heck out of the powder, I run .005", .030", .055" and .080" (.025" increments). It just might point you in a direction that as a minimum, tells you what OAL your rifle likes with THAT bullet.

Alan