Home Forums Hunting & Shooting Long Range Hunting 300 RUM Best Ballistic Balance - Velocity vs Bullet Wt.

Looking for what is the optimal balance between velocity and high BC of heavier bullets for 300 RUM. Looking at ballistic combos, at least one site suggests that a 165gr is the best combo. Any other opinions accompanied by data?

The 240 grain SMK would be tough to beat

I just looked up load velocities (1 off max), used Hornady's ballistic software and looked at windage and elevation with a 15 mph wind. I also did some Berger variants and used their software. So far the best results have not been the 165gr, but the Hornady 225 A-tip with only 3.85 MOA windage at 700yds.

BC will outrun velocity every time.

Depends what ranges you're talking about too and impact velocity to make sure the bullet will expand into game.

You should look up "MarkandSam after work" on You Tube. He`s running the 300 RUM with some heavy A-Tips. Could be some good info for you.

A 165 Barnes would be a great bullet for hunting.

Not always. At some point the velocity gets low enough that the time takes over for inertia. For 300 RUM, and the 700yd distance i was assessing things at, it looks to be after 225gr as windage drop gets greater.

What exactly is 'ballistic balance'? Start with what you want a bullet to accomplish and the range you need the bullet to do that. If being able to hit and kill at 700 yards is the end point, 'balance' is completely different than in the same scenario at 300 yards. The former 210 grains, the latter 165, would be the 'balance' point for me. It must be a given that the rifle shoots both well enough.

It all starts with hitting; followed by 'what' and 'where'. Fortunately the .30 cal is wealthy in that regard.

Nosler 210 ABLR's at 3100 fps

240 grain SMK at 2900 to 3000 FPS would be tough to beat

Maybe 20 years ago it was.

Also what rifles you guys shooting these heavies with the 300 RUM? Factory rifles as a Single shot, or a custom with a DBM to actually make it all work?

Not just 20 years ago but today as well.
I'm using a detachable box magazine made by Seekins

I know that the Berger has a slightly better BC but Sierra are extremely easy to shoot extremely accurate and until you've seen the damage they do on game you will not believe it

A "lowly" 300 WSM with 208 ELD bests the Ultra and the Turd 240 SMK,both Litz corrected. Hint.

There is no such thing as "Seeking",but if you are trying to talk about Glen,he makes some good stuff. Hint.

You gals REALLY "know" your "stuff". Hint. LAUGHING!



The 230gr Beer Can(which exists),is going to connect the most dots. Hint.

Pass the .284" 190 Beer Can and hold the Fluff. Hint.

LAUGHING!...................

By ballistic balance, I'm talking of the point where the minimum windage deflection occurs. Elevation is easy to dial in as it's basically gravity and time. Windage however is harder to compensate as wind is not the same at all points out to a long distance. In order to minimize windage error, it's best to use a bullet which has the least deflection for the velocity capabilities of the cartridge.

For a given cartridge, there is an equilibrium point whereby the heavier bullet with higher BC will have more windage deflection than a lighter bullet with lower BC because the heavy bullet will travel at lower velocity and due to longer time. For 300 RUM, from class I've done since the initial post, it looks like 225 gr has the least deflection at 700yds.

Ok, if minimum windage effect is the goal, the higher the BC, the better. I'd use VLDs. Plus, they're good killers.

Nope, that's my point. Only if velocities are the same does the High BC win out. In many cases, the lighter bullet with lower BC will have less windage drift as it has less time in flight vs the slower, heavier, but better BC bullet. There's a trade off point.

You HILARIOUSLY have ZERO fhuqking Clue,of what you are TRYING to fhuqking "talk" about. Hint.





BC wins in savage,ruthless and unerring fashion. Read that again. Now one more time. Hint.

You are TRYING to "talk" about a bullet that doesn't even fhuqking exist. Hint.





Gals who "know" and "do" as "much" as you,will ALWAYS be better served by asking questions,rather than giving "answers". Hint. LAUGHING!

Slow the fhuqk down,get an oar in the water and simply extrapolate and you'll start deleting your Dumbfhuqktitude. Start with dangling what you "think" you "know" now,with your Phantom 225. Cite velocity,atmosphere and sight height. Hint.

In a like chambering,cite where the lower BC "does better" in the wind,mainly because the attempt will be funnier than fhuqk! Hint.

LAUGHING!.................

You really don't need to take anything Stinky says seriously.

Take into consideration that all he does is interrupt somebody's thread. He brings absolutely nothing of value with his childish gibberish.

He will take a nice firearm and scope, butcher it with a hacksaw, place it in a creek and take pictures of it. Then he will take pictures of the rust and corrosion and post them and then tell everyone that the gun and scope are junk and the manufacturers are dummies for building such crap.

He has been called out many times to shoot competitive by fellow Alaskans, but will only slither away when he is actually challenged.

Fellow loggers have stated that he is a poacher known to Alaska and that alone is putting him in the scumbucket of society.

His cut and paste insults are so juvenile that like everyone pays little to no attention to the mutt.

He has such an inferiority complex created by trying to work around full-sized loggers that his mind is incapable of rational thinking.

You can a lot of useful information around this campfire, just do yourself a favor and put this little mutt on ignore.

Now let's sit back and watch the mutt come back with a whole month full of spittle and drool drips.

Wind drift does not depend on the time in flight, it is proportional to "lag time", so heavily in favor of BC.

Berger 215 (.354 BC) at 2800 fps = 18.8" drift at 600 yards
Berger 168 (.251 BC) at 3150 fps = 23.7" drift at 600 yards


You would have to slow the 215 down to about 2400 fps to make it have as much drift at 600 yds as the 168 at 3150 fps.

And you would have to speed the 168 up to about 3600 fps to equal the drift of the 215 at 2800 fps.

Glenn, beer can rubble rubble rubble you stupid fuuck.... if only you knew what a fuucking idiot you sounded like.... I’ll take the 230 “Atip”, not “beer can” over the 7 190 for obvious reasons, do too the “magic cart” that’ll spit em... hint

Oh my,

Crying Karen,you'll "take" Imagination and Pretend,if only because it's all that you can arrange...you "lucky" kchunt. Hint. Congratulations?!?

It requires MUCH more case capacity,to scoot the .308" 230 Beer Can,with the SWEET disposition of the .284" 190gr version of same. Such things,will only "surprise" you and your ilk. Hint. LAUGHING



Fortunately for you,Imagination and Pretend are free,so you can "afford" to "contribute". Hint. LAUGHING!

Bless your poor poor(literally) heart,for DREAMING otherwise.

Hint.

LAUGHING!...................

Oh my, you lil name dropper you!!! Guess well see about your "estimates".... grin

Oh sweetie, your stubby lil fingers running numbers??? Get to it dummy!!! Lets see some charts!!! Haha

What do you plan to shoot with it?

I don't shoot at 700 yards because my range steel only goes out to 565 yards.

The only thing I have shot the steel with in my 300RUM at 565 yards are 180 ETips.

I normally use my 308 to shoot the 565 yard steel. My favorite bullets are 125 TNTs cause they are cheap.

At 700yards with the RUM I would think there would be several decent choices.

At much farther yardage, it would make more sense to split hairs.

I'm preparing for an elk hunting trip for Colorado next year and want to minimize the potential error due to wind deflection of I have higher wind and a long shot. Range where I'm at in Michigan I can shoot out to 700yds. There's a good chance I'll be inside 700yds but given the RUM is hard on barrels I'd like to develop a load that's focused around minimal windage error. The 225 ELD looks the best from the ballistics I've run with the Hornady software and the 300 RUM velocity potential. Given that the ELD is not a hunting bullet I'll have to work with something else, but the 225gr looks to be the best balance in the RUM.

I've hunted Colorado, since 1948 killed a lot of Elk with a 30-30, Iron sites, they are not bullet proof, bow hunters kill them at 10 to 25 yrds every year, enjoy your hunt. Rio7

The 230 OTM and some H1000 ain't a bad place to start playing around.

Yes, there's a trade-off point. Millions of fast-twist barrels and heavy, high-BC bullets now sold indicate where the trade-off is. Stuffing a 130 grain bullet in your RUM will not get you there. Better, build a 6.5 x 300 RUM, shoot 140's, and get the best of both worlds.

When its way out there the 6.5 just doesnt have the mass and momenteum i desire. Ive used the 240gr SMK and yes its wicked. It kills a long way out there. Same with the big 338 and 375 cal boomers. Even at the 1 mile range the amount of damage on an elk size animal is very impressive.

oldalpinecricker, Please tell us about all the Elk you have seen killed or killed your self at a mile, and the rifle and scope combo, and load, pictures would help also. Rio7

In my 309 RUM I use the 200gr Accubond. It is a hell of a good elk bullet. Not the greatest box, but adequate. Rifle is a ss Nesika action, 30” Rock barrel McM HTR stock. It has worked excellent out to 1180 on a large Mike deer and 850 on an elk. The LR Accubonds weren’t out when I developed that load but at 3250 it does a great job. Haven’t tried any VLD’s out of it and will likely stick with what has worked so well in the past.

Actually it dosent.
In my 36” barreled 30x378 which i used for Pa long range hunting for about 30 years, i got 3500 fps with a 200 gr smk.
I never bothered to chronograph the 240 smk because the 200 shot with considerably less clicks on the scope at 1500 yds than the 240 did.
At 1700 yds the opposite was true, but then we never killed any deer at 1700 either.
Same goes for the 338s which is what i rebarreled to after my old barrel shot out.
The 250 will out perform the 300 gr as for added elevation to at least 1500 yds, depending on the cartridge.
Now these are actual (observed) differences done by shooting.
The difference is the heavier bullets are more consistant at the longer distances, but they dont shoot flatter for the most part.
Velocity rules, with every bore diameter.

The 250 in 338 certainly shoots flatter but has much more wind drift

Yep, you guys get it. At some point the heavy bullet's velocity is slow enough vs the lighter quicker bullet that the longer time in flight and windage deflection is the same or actually worse. Elevation is not a big deal as it's pretty much a constant, and can be dialed in whereas windage/wind is not. Max velocity potential is limited by the cartridge and bullet weight. True that velocity, not BC would always win, but unfortunately the velocity potential is limited by the cartridge. Run the ballistics on the Hornady app and you'll see that there's an equilibrium point with 700yd+ long ranges.

WTF are you doing "trying" to shoot big game at a mile????????????

215 Berger

The 240 SMK & the 300 SMK do a tremendous amount of damage on game
Darrel Cassell killed a bull elk at 2100 yards with the 338-416 shooting the 300 grain SMK the bullet went through both shoulders and exited with a tennis ball sized exit hole

If your RUM has an 1:8 twist barrel our new Barnes Bullets 208 LRX should be a hammer.

I haven’t looked at Barnes in years, just noticed that 212 bore rider with a .705 G1. Appears to be extremely long, 8 twist fast enough? I can get out to 3.8+ OAL in my PRC , it’s got me wondering if it’d work bearing surface wise as a repeater . What was that bullet designed for?I’d guess it’s still going to be a considerable jump.

Bore riders kinda came and went pretty quick in the ELR game. Have you worked with these at all?

Not yet. I've got a decent quality I picked up before the holidays but needed to finish working with the 208 LRX during the Christmas break and another, new, bullet we're about to release in a few weeks as well as our 145 Matchburners in both my 6.5x47's. Soon though.