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10-29-2006, 10:26 PM
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280AI - Effective Range
I know there's a few guys on here shooting a 280AI. What do you feel is the effective range of this calibre for deer sized game?
What loads are you shooting for that range, and what velocity are you getting. Thanks all. 
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10-29-2006, 10:47 PM
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if you can make the shot, probably out to about 750 yards, power wise
trajectory wise, with a 265 yard zero (+/- 3" PBR), you're only 18" low @ 425 yards (140 gr Accubond @ 3150 fps). thats a long damn ways to be shooting 
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"If you ever go into the bush, there are grizzly bears lurking behind just about every bush, waiting to pounce, so you need a powerful gun, with huge bullets" - Gatehouse ~ 2004 Last edited by 260_Rem; 10-29-2006 at 10:50 PM.
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10-31-2006, 05:20 PM
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Well past what most hunters in field conditions could pull off.
The 280 as it's name implies uses the 7mm bullet; which is one of the most accurate and flat shooting calibers out there. So....if you know you can hit it and can see it well enough, the round has the snuff to do the job
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10-31-2006, 10:55 PM
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Thanks guys!
Cheers
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11-01-2006, 03:18 PM
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I'm using a 140gr TSX @ 3167fps from my 280AI, and would not hesitate on moose/deer/elk out to 500yards....plenty of cartridge.
Here is a target with 2 shots I fired to confirm all was still well mid season last fall: 280AI 140gr TSX @ 3167fps 450 Yards  StoneChaser
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7-08 Rem.... the NEW 30-06!
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11-01-2006, 06:02 PM
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280 AI effective range
I have not been reloading for that long but if you take the time to look at your reloading manual you will find that this information is wrong. If you are getting 3000 feet per sec at the muzzel and zeroed at 200 yards you will be 38.1 inchs low at 500 yards. Even if you were zeroed at 300 yards you would still be 27 inchs lowat 500 yards. You might want to take into account the next time your in the field.One other thing about long distance shooting that most people don't take into account is wind drift it can play with your bullets quit a bit.For example a 10 mile an hour wind at 500 yard will drift your bullet 15.7 inchs right or left depending on wind direction.At best these shoots should be undertaken by someone who has practiced long distance shooting for quit awhile.
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 Grousehunter
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11-01-2006, 06:55 PM
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Thanks for the info Stonechaser. Have you done much shooting with accubonds out of you rifle? If so, how do they perform.
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11-01-2006, 06:59 PM
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Quote:
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11-01-2006, 10:18 PM
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Quote:
Second of all.... a 280AI that only yeilds 3000fps w/140's is not worth taking out of the cabinet. I sight my rifles in using an 8" PBR (meaning the bullet never rises higher than 4" along the line of sight). With a 140gr Bullet that puts it just 9" low at 400yards, and 24" @ 500 yards. It works.... just ask the hundreds of milk jugs and dented 8" steel gong that my buddies and I beat on every chance we get. Once you get out to try it, you'll find that hitting a water filled milk jug at 450+ yards can be done with boring regularity. Of course, this requires one to leave the reloading manual and computer at home and get out to actually shoot and verify the info... armchair ballisticians suck, but unfortunatly outnumber the guys that actually get out and practice! StoneChaser
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7-08 Rem.... the NEW 30-06! Last edited by StoneChaser; 11-01-2006 at 10:22 PM.
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11-01-2006, 10:24 PM
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Quote:
I've killed a number of bear, coyotes, a moose, and deer with the 140gr AB from my 280AI, and 2 Stone's rams, and bunch of bear with my 7-08AI and 140 AB's. They are a great bullet... but I would NOT use them on critters any larger than big blackies/caribou. For heavy lifting, the 140gr TSX is king... StoneChaser
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7-08 Rem.... the NEW 30-06!
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11-02-2006, 12:07 AM
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ackley improved - a different chamber that boosts powder capacity and velocity potential
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"If you ever go into the bush, there are grizzly bears lurking behind just about every bush, waiting to pounce, so you need a powerful gun, with huge bullets" - Gatehouse ~ 2004
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11-02-2006, 07:03 AM
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Quote:
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11-02-2006, 08:46 AM
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Quote:
StoneChaser
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7-08 Rem.... the NEW 30-06!
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11-02-2006, 09:26 AM
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Grousehunter, no offence intended, but, I have been reloading since Jan. 1968 and have owned and shot a pile of big game rifles since then. Yesterday, I was at the Mission Range, shooting several of the far too many rifles I own and my .264 Win. P-64 Mod. 70 Westerner was giving me 3350 fps. with WW brass, CCI 250s, 125 gr. NP and 65-IMR-7828 AND the trajectory over the 300M range was NOT what the manuals say it should be.
I have found this to be the case with most of the rilfes I have owned, over 100 and I have 32 at present; reloading manuals are a GUIDE, NOT the absolute end of ballistic facts. You NEED to SHOOT your rifle(s) AND chronograph them over a distance and do this is various weather conditions; THEN, you will be able to say what THAT rifle will do. As to Ackley cartridges, IF they are, as Stonechaser's IS, purpose built with a good barrel by someone who knows his ass from his elbow, THEN, if the shooter is a careful handloader and can shoot, there IS an advantage over the standard .280, one of my favourite rounds. It is VERY hard to make blanket statements about a rifle/cartridge that you have not actually seen and fired, I suggest being careful about "facts" from reloading manuals as they are NOT absolutes. If, I were to get a wildcat cartridge, the .280AI is the first chambering I would choose as it is a superb use of the basic .06 case.
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