1k Yard .300 win mag bullet

Also keep in mind though, a higher BC bullet will not make you a better long range shooter, or help you better read the wind. What it will do is lessen the consequences caused by reading the wind (and compensating with hold or a sight adjustment) wrong. The higher the BC, the more forgiving when you mess up your wind calls.
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I know this. The hope with the higher BC is that if I do my part, the rig and projectile will do their part. I'm not High Master yet, but I have shot high master scores at 600 yards. My ability to call wind is improving, but I still make mistakes.

This .300 wm will be used for 1k FPR, I have another rig for 1k Yard F-TR
 
I wish they made Lapua...I do not like Hornady brass (too soft). So I guess what I'm asking...Is Norma or Nosler worth the money? Or is it better to buy a bunch of RP or Winchester and sort it?
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Well...

I'd buy the Norma, anneal after every shot, and bump size the brass to fit the chamber.

I love Winchester brass for 600 and under, but beyond that...every extra little bit of consistency helps.

emcon5,

True, but at 1000 yards, The argument could be made that a higher BC load is more important that pure accuracy, provided the accuracy is acceptable.

If I had the choice between a 3/4 MOA load shooting a ~.7 BC bullet or a 1/2 MOA load shooting a ~.5 BC, I will take the less accurate every time.
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Well, that is certainly a technique,although I'd bet you'd choose differently if the .7 bullet were shooting 2.5 minute groups versus 0.5 minute groups with the .5 bc bullet. At some point you have to make a choice on what you'll prioritize, and sometimes your barrel is just going to shoot a lower BC bullet a lot better than a high BC bullet (often very true comparing secant ogive to tangent ogive bullet designs).

As I mentioned that past 300 the size of your groups at 100 doesn't really matter, but I also mentioned earlier, the difference between a 220 and a 168 Berger is 0.2 minute difference for the same wind conditions at 1k, which is literally two inches at a thousand yards. The eighth of a second advantage the lighter bullet has comes into play in "shifting conditions" where you want your bullet to fly through the most similar conditions across the entire length of flight. Sometimes instead of making an individualized wind call for every shot, you just need to pick a single condition and wait for that condition to present itself to take the shot, at least on the slow fire stages.

Everything in the firearms world is a compromise, and I just wanted Mississippi to have a full understanding of the various aspects of the performance envelopes available to the 300 Win Mag at 1k, and I think we've done that nicely.

Jimro
 
I am too long away from rifle shooting to recommend brands but will just say:
Don't be too hard to please. There are so many reasonably suitable bullets on the market now that you could wear out your barrel looking for the perfect load and never make it to a match.

As for MOA vs BC, a friend has a rifle for which he has a calm load that is extremely accurate in still air or even a constant breeze and a windy load that is merely very accurate in the calm but has a higher BC and shoots closer to the wind. Guess which one he gets more use out of.
 
Thanks fellas for all the information. I love learning about this stuff and discussing it. I don't know anyone personally as enthusiastic as I am about it so this forum is a great tool.

I think I'm going to order 200 pieces of Norma brass, some Redding competition shell holders, and try the 190 gr custom comp, the 210 smk, and the 208/212 ELD....And H1000. With that I should be able to develop a suitable load.
 
Old Roper is correct, Berger doesn't make a 220.20x bullet, the one listed in the JBM bullet data repository that I used for calculations is evidently a typo. Someone must have fat fingered the input, and I didn't catch it, I was just looking for a good "heavy" bullet without going to the 230gr option.

Jimro
 
Mississippi said:
I know this. The hope with the higher BC is that if I do my part, the rig and projectile will do their part. I'm not High Master yet, but I have shot high master scores at 600 yards. My ability to call wind is improving, but I still make mistakes.
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Hell, even High Masters get the wind wrong.

Jimro said:
Well, that is certainly a technique,although I'd bet you'd choose differently if the .7 bullet were shooting 2.5 minute groups versus 0.5 minute groups with the .5 bc bullet.
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Yeah, that is why I prefaced it with:
me said:
provided the accuracy is acceptable.
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Using the wind example I provided, I would certainly give up 1/4 MOA of accuracy to gain ~2 MOA less wind at 1K. If the delta was different, either worse in accuracy or closer in wind, I might go the other way.

Like you said, everything is a compromise.
 
I made a spreadsheet over the last couple days of every single match bullet For Sierra, Hornady, Berger, Lapua, nosler, and Barnes in .308 and .224. the list includes every weight, G1&g7 BC, bullet length and the length of the polymer tip where applicable. I had to call Hornady for the ELD lengths and Nosler for some of theirs...But this sure makes it nice for determining what will fit in a magazine and looking at BC vs weight.

One thing I noticed from the list is that quite often, a heavier bullet may have a lower G1 and G7 than a lighter bullet if similar design. The 175 vs the 180 Grain .308 Sierra match kings...The 175 has a higher BC than the 180's. Which begs the question: Why in the world would you shoot a potentially slower bullet with lower BC?
If it's a round nose hunting bullet that's one thing, but for wringing steel or punching paper why would anyone choose the 180 smk over the 175?
 
Why in the world would you shoot a potentially slower bullet with lower BC?
If it's a round nose hunting bullet that's one thing, but for wringing steel or punching paper why would anyone choose the 180 smk over the 175?
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Simply put, for unknown and mysterious reasons some rifles will shoot those slower bullets with less BC better than lighter bullets with higher BC. For known distance shooting this generally isn't a problem at all.

Historical example.... The 168gr SMK was designed for 300m shooting for the Olympics, and High Power shooters found that it worked very well out to 600 yards for across the course matches. The 173gr M72 match FMJBT ball round has always had the higher BC, but a lot of shooters using Garands would load up match ammo with the 180gr SMK (this was back before the boat tail geometry change).

Jimro
 
Simply put, for unknown and mysterious reasons some rifles will shoot those slower bullets with less BC better than lighter bullets with higher BC. For known distance shooting this generally isn't a problem at all.
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Ahh, that makes sense. I know that most of the time a 1:10 twist is actually between 1:9.5 and 1:10.5 in most guns, even the same make and model will have slight variations in twist and/or chamber. So what works in one gun may not work in an identical one as well.

A high BC from a cartridge/gun combo producing 3 MOA groups doesn't do much good.
 
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