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280 AI replacement for 270 Win.

 
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  #8  
Old 06-26-2009, 03:25 PM
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Re: 280 AI replacement for 270 Win.

Quote:
Originally Posted by MontanaRifleman View Post
You beat me to it... I was thinking and wondering the same thing.

I got 200 fps more with RL17 than H4350 in my 300 WSM shooting 180 E-Tips. I wasn't real sure how it would work in a cartridge like the 7 RM or 280 AI. The best I could do with my 7 RM was about 3000 with 160 gr NPT's.

On recoil... Not that I dont disbelieve the report of no recoil, but I know that my 7mm RM kicked pretty good shooting 160's at 3000 fps. Kind of hard to imagine an 280 AI not kicking shooting 162 A Max's @3140 fps.

-MR
Believe me I understand your concerns. Not to hijack the thread but that was the reading yeterday. The rifle is a savage long action. Rock cut barrel 8 twist at 28 in. The Rig sets in a Mac Stock. So I guess it is about 14 lbs with the NF 5.5-22X56. I had been running rl 22 @ 56.5 with really lack luster results. On a wild hair I switched to 17 and man am I happy. This rifle was built by Harrold Fred. My veolcity has been running from 3120 to about 3160 so I am in the process of switching to small rifle primers to tighten up the velocity spread. We shall see. Sorry for the hijack.
T
Forgot to answer you recoild question. 7mm Rem Mag and 280 AI both with the same velocity not even in the same catorgory in recoil. Someone will probably show some kind of chart that say they are the same but the felt recoil is way less in the 280 AI. I have both
T
One more edit. This is my 1st time with the powder. Used a 280 REm load went up 1 gr and started going up. The gun shoots pretty good @ 53. The Velocity is way better than I would have thought SO I will stay for awhile. Gonna work with primers and seating depth. Most likely I will stay with the 162 amax just cause they are cheap and I like them for deer and steel.
T

Last edited by toddconley; 06-26-2009 at 03:31 PM.
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  #9  
Old 06-26-2009, 05:43 PM
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Re: 280 AI replacement for 270 Win.

Quote:
Quote:
Originally Posted by toddconley View Post
Believe me I understand your concerns. Not to hijack the thread but that was the reading yeterday. The rifle is a savage long action. Rock cut barrel 8 twist at 28 in. The Rig sets in a Mac Stock. So I guess it is about 14 lbs with the NF 5.5-22X56. I had been running rl 22 @ 56.5 with really lack luster results. On a wild hair I switched to 17 and man am I happy. This rifle was built by Harrold Fred. My veolcity has been running from 3120 to about 3160 so I am in the process of switching to small rifle primers to tighten up the velocity spread. We shall see. Sorry for the hijack.
T
Forgot to answer you recoild question. 7mm Rem Mag and 280 AI both with the same velocity not even in the same catorgory in recoil. Someone will probably show some kind of chart that say they are the same but the felt recoil is way less in the 280 AI. I have both
T
One more edit. This is my 1st time with the powder. Used a 280 REm load went up 1 gr and started going up. The gun shoots pretty good @ 53. The Velocity is way better than I would have thought SO I will stay for awhile. Gonna work with primers and seating depth. Most likely I will stay with the 162 amax just cause they are cheap and I like them for deer and steel.
T
The 28" barrel explains some of the velocity. RL17 does seem to be a good powder, I'll have to try it in my 7RM. And a 14 lb rifle will absorb a good bit of recoil... I never shot a 280 AI so I wouldn't be able to comment on recoil from experience. Sounds like a very interesting cartridge.
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  #10  
Old 06-26-2009, 07:35 PM
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Re: 280 AI replacement for 270 Win.

small rifle primers in a large rifle primer pocket??????

Good luck with that....
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  #11  
Old 06-27-2009, 03:20 AM
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Re: 280 AI replacement for 270 Win.

I get about 3050 fps with a 7mm Rem Mag in a 24 1/2" barrel, so bonefisher, don't expect 3150 with a 280 AI. I also own one of those and it doesn't keep up with my 7mm Rem Mags.

The 3150fps with a 160 gr bullet from a 280 AI is not the norm.
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  #12  
Old 06-27-2009, 05:15 AM
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Re: 280 AI replacement for 270 Win.

Quote:
Originally Posted by phorwath View Post
I get about 3050 fps with a 7mm Rem Mag in a 24 1/2" barrel, so bonefisher, don't expect 3150 with a 280 AI. I also own one of those and it doesn't keep up with my 7mm Rem Mags.

The 3150fps with a 160 gr bullet from a 280 AI is not the norm.
+1,

My 7mmRM with 24" barrel gets 3015fps with 160gr Accubond. I could likely push it a little harder put not much.

AJ
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  #13  
Old 06-27-2009, 05:23 AM
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Re: 280 AI replacement for 270 Win.

Quote:
Originally Posted by loaders_loft View Post
small rifle primers in a large rifle primer pocket??????

Good luck with that....

He probably meant non-mag primers.

AJ
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  #14  
Old 06-27-2009, 10:45 PM
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Join Date: Nov 2006
Posts: 179
Re: 280 AI replacement for 270 Win.

Your correct reg large rifle primers. i was very surprised with the velocity of the loading. Made huge jump from the previous loading. I have 20 loaded now just have not made it to shoot them yet. We will see if the chrono was telling lies or not. I think it is gonna be the powder. Lots of people were making some big claims with this stuff and I was very hesitant. It might be true though if you have a caliber that fits the powder. I went to 54 gr and still have very tight primer pockets. Spreads opened up alot when I went to 54 on the 1st set of loadings. As there is already some spectulation on the accuracy of my statements I am not going to elaborate on the numbers I got @ 54. I will let you know if the spreads get tighter with the reg large rifle primers. If this doesnt work I am going to start playing with the seating depth.
T
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