Would you prefer shooting the 100gr Partition or 110gr Accubond in trhe .257 Roberts? i am hunting whitetail deer in MN, AR, and LA with it over the next couple of months. I have used both bullets and liek them, but always in larger calibers. I have very limited excperience with anything smaller than a .270. DOes the 10 grains make any difference one way or the other? I would not worry about it in a .270 or '06, but in the .257 it is a 10% increase in bullet weight I am looking at.

OK, loaded up some 100 grain partitions with IMR 4895 (37 then 39 gr) and W760 (45.0 and 45.5 gr). The 4895 load was really accurate, with the 760 being plenty accurate enough for hunting. But the IMR 4895 was definitely better shooting in this rifle.

Then I loaded some 110gr Accubonds with IMR 4350 (43.0gr) and W760 (45.0gr). Just ahd my neighbor shoot oen group with each load. The 760 was so-so and the 4350 was really good.

Granted, I am the statistically significant research guy who always wants more data, but I had to make do with what shooting i could do myself this morning and then have my neighbor shoot fo rme this afternoon. VERY SMALL sample sizes, but I am plenty happy with the accuracy with all of the groups.

Also did not take the time to monkey with my chrony. I have an Ohler 35P with the 3 screens and stuff. I may shoot aq few rounds over the chrony by the end of the week just to satisfy my curiosity. I just like data and want to know whatever load I am shooting is doing when it leaves the barrel.

Oh, I was shooting the rifle with a .8" Pachmeyer Delecerator inside a 1" Limbsaver slip-on pad on the rifle, with a total weight of right at 8.5#. With the pads and weight and th emuzzle brake, that hting is a TOTAL POWDER PUFF to shoot! My body definitely protested me shooting as much as I did, but i was able to handle it. When I shot I stood almost straight up with a towel rolled up on the bed of my truck and the rifle magazine floorplate resting on the towel.

Mark, I don't have an answer for you but man your body must have taking a beating over the years. I remember when you were bulding a 505 I think and now a 257 is hurting you. Take it easy and I hope you get better.

Sorry man, I won't be of much help. I much, much prefer the 117 SGK over 44.0 gr. of H4350. I get 2800 fps and 1/2 moa accuracy off the bench in my Rem. M7MS.

Given the two, I'd go with the 100 partition. But really, if it were my gun I wouldn't go either way.

Told you I wouldn't be much help!

I too am shooting 117 grain Sierra's at 2825 fps into tiny little groups (41.5 grains IMR-4350). Everything I've shot so far has exited, this includes a large Mule Deer buck hit behind the front leg and exiting his neck 200 yard shot and over 20" penetration, as well as close shots and a really long shot on a wounded Antelope. Like I said all exited no recovered bullets.
With this performance I would lean towards the heavier bullet even though I am not normally the heavy bullet advocate.
Just my opinion and hope it helps.
Good luck on your hunts!
You will find the .257 Roberts a potent killer.

I always used the partition and it was great but changed to the ttsx 100 gr and love them I dont think the 10 gr makes a big deal any of the bullets you listed will work.

I almost never recover one of the partitions and never have recovered a ttsx

I have used both in my Roberts. The Accubond shoots much more accurately. I have not used the powders you mention. My powder choice is Varget.I'm getting just under 2900fps with the Accubond.
GOOD LUCK and GOOD SHOOTING!!!

Either bullet will do in a whitetail just fine. You will likely get the faster expansion appropriate to a target the size of a whitetail with the Partition and its quick-expanding front portion. But a deer shot properly with the Accubond will end up just as dead and no more than a few feet (if that) further away.

In fact, you likely can't find a .257" bullet of 100 grains or more that won't perform quite satisfactorily on whitetail from the Roberts.

In my Ruger .257 Roberts, I've never been able to get 100 gr. bullets to shoot very well. The 110 Gr. AB's though shoot very well in it. I have not used them for hunting deer yet, as I've had such very good results using Sierra
117 gr. Prohunters. The PH's are also very accurate in this rifle. My buddy shoots the AB's in his 25-06 and they are deadly on mulies. I would think if your AB's shoot well, they would be an excellent choice.

hello

on my roberts a remington 722 custom since 21 year i use 100grs nosler partition and never, never recover a single bullet, now i using 100grs ttsx just for a new testing and again is a real killer.

a had some 115grs, 117grs and 120grs bullets boxes storage kipping dust.

whit my roberts i had taken desert mule deer on sonora, coues deer on sonora, white tail deer on coahuila, coyotes for all mexico, and some federal dogs near mexico city, and the roberts is kipping a record for "a single shot animal taken"

these mule deer was taken in sonora, only one shoot 100grs nosler partition using imr-4350, r.p case, and fed 210m.


By mexicanhunter at 2010-09-02



By mexicanhunter at 2010-09-02

remington m722 cal 257 roberts


By mexicanhunter at 2009-08-22



best regards

Nice looking bucks!

I shot a few rounds over the Oehler today, just to satisfy my curiosity. Measured 10' from the muzzle brake on the 21" barrel:

WInchester 117gr +P load only managed 2469 fps

39.0 IMR 4895 100gr Nosler Partitions averaged 2901 fps

43.0 IMR 4350 110gr Nosler Accubond averaged 2753 fps

If this were a normal year I would spend soem time working up a few more loads to see if I could find more accuracy and/velocity. But then if this was a normal year I would not need to shot an 8# .257 Roberts with a muzzle brake!

Thanks for all of yall's help!!!

Either will be great. You should have no issues. I just "bloodied" my Roberts this week using 115 Nosler Ballistic Tips.

Here is the link to the post.

http://forums.accuratereloadin...1621043/m/2811075341

I would opt for the accubond over the partition because I feel it will have better terminal performance. I have shot many deer using the solid base ballistic tip which always shows tremendous tissue damage and the new accubonds are basically an improved BT.

I tried 42gr IMR 4895 with the 100gr Partition. It shot well at 100 yards and clocked 3131 from the 21.4" bbl.

BUT...it kicked a good bit more than the 39gr loads. The 110gr also kicked more than the 39gr 4895/100gr loads. I like the terminal performance of both the Partition and Accubond, si I went with what was easiest on kmy spine. The 100 gr Partition at 2901 is going to have to do the trick for me this year

BTW-just wanted to say a HUGE THANK YOU again to eveeryone who posted or PM'd me helping me with this issue! It felt so good to be able to hunt and I am really looking forward toward hunting until the end of the year. Yeah, my health conditions and broken back definitely slow me down and limit me, but due in large part to yall's help, I am able to be out there. That is all that matters

100 Partition at 2900 should do the trick on any whitetail. Glad you found a combination that will allow you to hunt this year. good luck.

The .257 Roberts being a 7X57 necked down handles the heavier bullets just fine. So when nosler split the difference from the 100's to the 117 and 120's it was love at first sight.If it shoots the 110 nosler accubonds with any accuracy 4350, R22, H4831 no need to look further. Just use the Roberts for what it was meant to do. Life is Good.
kidd

quote:

I shot a few rounds over the Oehler today, just to satisfy my curiosity. Measured 10' from the muzzle brake on the 21" barrel:

WInchester 117gr +P load only managed 2469 fps

Years ago, before the "plus P" loadings, I chronographed WW 117 grain factory loads at 2900 fps from my 23" barreled .257 Roberts (a Herter's XK3). You gotta wonder about all of the "progress" in factory ammunition in the last 30 years.

Some may scoff but I use 100 gn Nosler Ballistic Tips in my 257 Roberts for deer and pronghorn with fine results. No reason to think the Partition or Accubond wouldn't perform just fine on the same. Use what shoots best.

I just posted this over on the Medium Bore Forum:

quote:

I believe that for deer size animals, any expanding hunting bullet will work just fine, if it is properly placed. For the past 40 years, I've made one shot kills on dozens of mule and whitetail deer, pronghorn antelope, bighorn rams, a Dall ram, caribou, and elk with 117 gr Sierra GameKing bullets from my .257 AI.

I've tried 100 and 110 gr bullets in my .257 AI, but get better accuracy with 115-120 gr bullets.

This year I tried 115 gr Ballistic Tips with great results in accuracy and velocity, and another one shot antelope kill. I don't think I'll ever use a different hunting bullet in this rifle, unless some political idiot succeeds in banning lead bullets.

I have no experience with the 110 AB out of the Roberts, but plenty with the 100gr Partition out of the Roberts, 25 Souper, 25-06, 257 Wby and 25 STW. The 100gr Partition flat out works, especially at the speeds the Roberts will run them. it is soft enough up front to open well and cause serious damage, while the rear will keep driving like crazy (imagine that, it works as designed).

The 100gr Partition is my go-to bullet for the Roberts and Souper. My wife and I have killed a trailer full of deer with that bullet and it works wonderfully every time. I've said it several times that the 100gr Partition/Roberts combo kills way out of proportion to it's size.