.270 vs .280

Which do you prefer?

  • Total voters
    436
Canuck525 said:
Incidently, I am shooting a nosler 150 gr ballistic tip out of my 280 rem at approx 3150...
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Um...how do I say this...well, I don't think you are getting that kind of velocity. I don't think it is doable even with a .280AI and a 26" barrel. What chronograph are you using? What powder?

That is 7mm RM velocity, and that case holds considerably more powder than the .280 Rem.


BTW where is Bigredd these days?
 
Canuck525 said:
I always test my loads through atleast 2 chronographs and the speeds were actually mostly in the mid 3160 range. The load is RL 22 62 grains with a fed 210 gold metal match primer. Please don't tell me this isn't a safe load in my gun. I have been loading for about 27 years and know how to read pressure signs.This is a safe load in my gun but may not be in yours. The barrel is a 24 1/2 inch RKS.
I am getting much more out of my 7mm rem but I wouldn't recommend shooting my load in the middle of july which is 71 grains of RL 22 with a 150 grain ballistic tip.In my friends 7mm we have to keep his loads around 65-66 grains of RL 22. 7mm's can be quite different from one to the next so be very careful loading for them.
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After loading like that for 27 years, can you still see out of both eyes and how many fingers do you have left?:confused:
 
Those loads are over the max in the new Nosler manual by quite a bit.

280AI max for a `140 gr bullet 61.5 re22
7mm rem maG max 67 grs.

Before you set those off, you might want to warn the guys beside you at the range.
 
Canuck525 said:
Any seasoned reloader knows the reloading manuals are just a guide.Every gun is different as as the barrel gets shot out it can handle more powder.I go by pressure signs and measure my brass and inspect it closely. I have NEVER EVER had a failed case EVER. I go by pressure signs and measure my brass and inspect it closely. I usually toss them after about 4-6 loads max.
By your comments you really don't seem to have much understanding in this area.
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4-6 rounds isn't much, do you anneal your brass?
 
I could get more loads out of them but I do load to beginning signs of pressure and so don't want to risk a case failure.Brass is relatively cheap is the way I look at it.
 
I wouldnt want to see more than 3050 out of a 24.5" 280 with a 150 grainer...Ive shot 154 grain Interlocks to about 2950-2975 with RL25 in my 24" tube, but would not push it much harder than that (not that I could, capacity is about run out @ 62 grains)

Im now loading 160 gr Accubonds to 2830 fps with 57.0 grs AA3100, my rifle is a 24" barrel Model 700 stainless
 
Canuck525 said:
By your comments you really don't seem to have much understanding in this area.
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Well, I guess to each his own. The way I see it is this. If your cases have loose primer pockets or other signs by th 4th loading, the pressure is too high. If they last for 10 loads your pressure is good.

You say that as the barrel gets shot out it can handle more powder, this is true. But only because pressure (and velocity) drops. Your claimed muzzle velocity is extremely high - it is 175-200fps higher than any of the reloading manual. The Nosler manual I have also gives a max load of 56.0gr of RL22 giving 2982fps out of a 26" test barrel. There is no free lunch. You are using much more powder and getting much higher velocity out of a shorter barrel. What does that mean? That you are way over SAAMI pressure limits. Those limits are there for our safety. If I want more velocity I get a cartridge with more powder capacity, but that's just me.


I've only been loading for 19 years, so I have considerably less experience than you and may therefore be wrong.


edit: of course every rifle is different. But the true measure of pressure, w/o the actual pressure measuring equipment is velocity. You have WAY too much velocity to be safe, IMHO. The amount of powder, in that sense, is irrelevant.
 
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Canuck525 said:
OMG!!! lol.....pressure is not measured by velocity. Where in the world did you come up with that? Inspect your cases,check primer pockets, most importantly measure the web. Those are some of the signs of pressure. 27 years without a failed case proves this works.
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I can tell by this comment that you don't really seem to have much understanding in this area (not to mention reading comprehension issues).

I am familiar with the transducer method and the copper crusher system. I am also familiar with physics.

Your comment of 27 years without a failed case proves something, but not what you intended. Just like the person who has hunted for decades and never missed a shot, or never needed more than one shot to anchor an animal.

ROA - it's pointless. He obviously knows something we don't. Let's hope he, or someone else using his rifle, doesn't lose an eye.
 
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