Let's get back to the topic at hand here...I took the 257 Wby data with a 115VLD at a b.c. of .466 and compared it to the mighty 6.5 Creedmoor with it's 140 Amax and .585 b.c. I picked these two as comparisons because: A.)There are factory loaded rounds available with these bullets. B.) They are widely talked about on this forum for much different reasons. I plugged this data into 3 different ballistic calculators, (Strelok, JBM Ballistics, and handloads.com) I came up with some surprising information. Using the factory loaded manufacturers specs on both boxes of ammo, HSM loaded 257 Wby 115VLD at 3320fps and Hornady's 140 Amax match load with the A-max at 2710, I compared these figures and they are as follows:

Handloads.com/calc

Less than 1" of windage difference at 1k yards...Energy the same out to 900yds...

JBM Ballistics Calc




The table on the right of the table is a 270WSM HSM round at 3060 with a 150 VLD at .531 which also gets a bad reputation for "low b.c." on this forum.



.1, yes, POINT ONE MOA windage difference at 1k yards between the .585 Amax and the .466 VLD

2.5% difference in energy with a nod to the Creedmoor at 1k yards with 21.7% greater bullet weight


What say you?

I say we are arguing for absolutely no reason when the numbers are nearly identical...

So was I supposed to read your mind to get the whole story? Kinda funny you burned out the barrel with a bullet it wouldn't stabilize. This forum is here to help each other. By your last sentence, I shouldn't question you and thank you for being on the same forum as me? Good thing you're not condescending to the new guy that's in over his head and doesn't worship BC.

The real question here is, is it flatter to 500 then a 257 wby ( 3600fps BC of .4).

http://www.precisionrifleseries.com/news...pment-list.html

Well I guess all these guys are all wrong and should be shooting a quarter bore. What do they know? I've only shot at (well I lost count) of these matches and not a .257 or .277 in the lot. Maybe I should switch over and gain a tad of an advantage.

.257stw load leaving at 4000 fps...

800 yds
speed 2229 fps
energy 1103 fpe
time 0.808 sec
drop -104.61 in
10mph drift 36.81 in

7mm 180Hybrid in a 7RM @ 3080

V: 2025
E: 1674
Drop: -111.78
Drift: 31.58
Time: 0.95

could probably do ~3200 on a STW/7-300 if we went wildcat with that bullet (102.49 drop, 29.69 drift)

BC still wins.

That aint benchrest. 7 Mag would recoil too hard and you wouldn't witness impact, or splash when shooting positional. You have to spot for yourself.

.224" anything gets pushed by the wind too much. 6, 6.5, and 7-08 are the balance of both worlds.

Next?

Against a terrible LR bullet in the tsx.

The 257 is not the best round for every thing but its hard to beat where its good. To beat its short rang trajectory you have to use a stw, rum, ruger (nosler), or 378 weatherby case. Isn't this what the op was asking?

You provided the data dude. don't get mad at me for comparing it against a bullet ~900 fps slower

I remember a hunt in the early '70's with an older gentleman shooting an old 30-40 Krag with iron sights, who dropped deer DRT out to 250 - 300 yards.

Another person on the hunt was using a 300 Weatherby and could not come close to producing the same results.

What was the difference? Not the loads, but practice.

Yes....it was exactly what I was asking

Just yanked it off their website, run it against equal bullets or a 115 VLD that should run 3800.

With 300yd zero, you should be able to hold on hair 0-500.

Yes....it was exactly what I was asking

Does a flatter shooting sub 30 cal exist? (referring to the .257roy in your title)

Then when someone mentioned one (22 Creed) you told him he was full of [censored] and starting talking about ft/lbs etc? Just like my wife....why ask the question if you already in your mind know the answer?

The original question was:



Answer is yes...they are out there. The two that come instantly to mind are a 220 swift and 22 Creed...I'd have to run numbers but a stout 6mm pushing a 75-90g bullet should be close too. You might even be able to get a light 7mm bullet to shoot in a 7mm and get it to 257roy trajectory. Probably could even work up something in the 6.5saum to get close. So they do exist...and inside 300y they will all kill TX deer stone dead, dead is still the goal...right?

Y'all are arguing over something that doesn't matter, point is txtrophy (and few others) love their .257roys...that is awesome and I'm happy for you. Everyone else have guns they love too...doesn't mean what (insert your name here) is better than everyone elses.