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Best projectile for long range with a 300 win mag

42994 Views 32 Replies 20 Participants Last post by  Darkker
I have a surgeon built 300 win mag in a McMillan a-5 with a 27.5 Krieger barrel and night force nsx 8-32. I'm very new to magnums and reloading but plan on loading for this rifle I was thinking on Sierra 190 bthp. But don't want to dump a bunch of cash on bullets then find something that does better for this application.... Any advise?
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Forget boat tails. Unless they are of a bonded verity.

While there are bullet a bit better ballisticly, a 200gr Nosler Partition is a GREAT selection for those elk your thinking about.

You may have no choice but to spend some bucks to find the bullet/power/load your rifle likes. Your rifle will tell you.

I just know that I have always had good results with the Nosler Partitions in any rifle with a good barrel. Always accurate and always deadly.

Longest shot I'll ever take at a game animal was years back, one shot bang/flop on a mule deer buck at 500yds. 7mm Rem Mag, RUGER #1 with a 160gr Nosler Partition, Old Redfield 4X12 with the range finder ribbon in the bottom of the field of view.

Crusty Deary Ol'Coot
Blems/rejects/seconds are not always just superficial stains or marks.

In the "good Ol'Days" we could buy the Speer "rejects" by the LB. at Lolo's in Lewiston, Idaho.

That went on until there were changes in the Speer, CCI and the rest of the Good Ol'Boys company ownership and the pencil pushers decided that they should market the seconds in another way. The supply at Lolo's dried up and so did their business which had flourished for many years.

I still have in hand, some 150gr., .270 Grand Slams, "Rejects", that have nose metal from the jacket formed in on itself, the exterior of the bullet looking correct except for the fold in the jacket material at the nose of the bullet.

In this case, the blemish goes beyond skin deep.

I have shot many "rejects" in .22 and .243 caliber and not only did they usually group well, but were devastating, as expected on vermin of one kind or another.

So, Unclenick is mostly correct in saying that the blemishes are usually surface imperfections, but that is not a 100% situation as proven by my long held supply of those .270 Grand Slams.

Crusty Deary Ol'Coot
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Sorry, I was incorrect when yesterday I said that the Speer Grand Slam bullets with the visible defect were 150gr .270 bullets.

Unless I also have some similar .270s on hand, the bullets were 30 cal. Grand Slams.

The point is, "blems/seconds/rejects" may have more issues then just a surface tarnish etc.

The attached images will prove my point!

Crusty Deary Ol'Coot


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"Don't want to dump a bunch of cash on bullets ------------------"

You need to know that your rifle will tell you what it likes and you may well need to try a few different products.

Just a personal opinion, but if I wanted optimum in a bullet it would not be a Sierra bthp!!!!!!!!!!!!!

Of course, there are those that like such things, but there are a number of better bullets and those such as the Nosler Partition 180 and 200gr would be just two that qualify.

Then, there are a number of "bonded" 30cal bullets - Hornady, Swift, Nosler etc., that would all be equal and likely better then the Sierra offering when it come to the integrity department, something that the Nosler and Swift partition bullets excel at.

Have used the Nosler Partition for years in 300 Win Mags and never once had a reason to be sorry with the results on game.

My longest ever game animal was taken at 500yds with a 7mm Mag and a 160gr Nosler Partition. One shot, bang/flop.

There has only been two rifles in which Nosler Partitions did not group well, including .243, 7mm mag., 300s. First was a post 1964 Winchester 300 with a bad barrel and the second was a Browning A-Bolt 300, both of which should have never left the factory with barrels in that condition. Don't know how it happened, but the Win had a tight spot in the barrel and not only was accuracy so so at best, but high pressures QUICKLY showed up. The Browning looked like someone had run a threading tap down the bore and it would shoot no bullets tested good or consistently.

Crusty Deary Ol'Coot
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