What is your favorite/proven 100 grain deer load in the .257 Roberts?

A search should bring up several of these threads.
My personal favorite is the 100 Hornady Interlock (discontinued but you might find some) over a heavy charge of H4350. I've killed several mature bucks at up to 250 yards with it. Killed a Pronghorn at 375 with no problem.
We've killed a few with the 100TSX but settled on the Hornady since I had quite a few of them and also use it in my 250 Savage.
I haven't tried them on game but the 100 Ballistic Tip is supposed to be one of the heavy jacket versions and work well.

A 100gr nbt does a real nice job in 250AI. I believe it's very close to the Roberts.

100 grain TTSX over 46.6 grains of H4350. Works every time and is very accurate in my gun.

100 grain ballistic tip over H4350

100 grain partition, WLR primer, 41.5 grains of IMR-4350. Shoots a quarter inch in my little Bob.

100 grain BT or Partition over 48 grains of H4350 seems to work OK in my 24" 700 CDL-SF.

46 H4350 100 gr NPT.

Years back I used IMR4831 and RL 22.

That seems awfully light, more than three grains under Hodgdon's start load.

Barnes 100 TTSX over stiff charge of Hybrid 100 V.

It is only 2 grains under Nosler's or Hornady's max load.

The little TTSX up near 3000 FPS is very effective.

We have used a bunch in Ingwewifes Bob but favorite is the now discontinued Hornady 100 grainer over about 38 grains of IMR4895. Second choice is the Nosler PT 100 grainer,Third is the Barnes TTSX, Haven't tried the NBT but have faith in it after seeing how well the 95 NBT works in a .243...

dont currently have a bob, but i recall preferring 38 g of varget OR 4895 to keep a cup/core 100 g boolet under 3000 fps for deer killin.

It a custom small ring Mexican Mauser action. Because of the action, I deliberately shied away from +P type loads. I've shot a number of deer, probably 75 or so with this rifle and I think it must be charmed or something. Every deer I've shot has immediately hit the ground. Not a single step has been taken after the first shot. I've never tracked a single deer shot with it. Not one! Downright strange or coincidental...I don't know. Her biggest buck was a huge 8 point that dressed at 240# even...bang flop.

What brand cases are you reloading?

Really? my 257 Weatherby absolutely electrifies deer with them. I think I have about 500 on hand though.

I've had 3 Bobs that loved 46 gr RS-Hunter, LRM primer, and either the 100 gr Interlock or ballistic tip.

Long throated Ruger M77, +P brass and loads, H4350, bullets seated out to base of neck or mag length (on phone and can't remember which).

Over 3200 w/ 100g TTSX and 3150 w/ 110g AB.

Good case life, easy extraction, rounded primers.

if working up new loads I'd start w/ H100V.

WW

100 grain partition over 46.3 grains H or I4350....

I was using 47.5 grn of H-4350 and a 100 TSX for a while but it was hard to beat the factory Remington 117 RN for woods ranges that I usually hunt in.

Partition works well

Sierra 100 gr Gameking and 47.0gr IMR 4350

GreggH