Prefered primer for 280AI and AR2217

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Steve N
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Prefered primer for 280AI and AR2217

#1 Postby Steve N » Sat Jan 21, 2017 7:28 pm

With loads of around 60 gr of AR2217 are magnum primers a better option than regular Large Rifle primers such as Fed 210m's or BR2's. Hoping to hear from someone that has loaded this combination before. Projectiles may vary in weight from 162 to 183 grns. Rifle is for F open so hopefully won't be using it in sub zero temperature....

Thanks

Steve.

willow
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Re: Prefered primer for 280AI and AR2217

#2 Postby willow » Sat Jan 21, 2017 10:41 pm

Hi Steve, Matt Paroz recently chambered a 280AI for me. Barnard action with a 32" 8.5 twist Bartlein hanging off it. Running 180gr VLDs. Approaching 200 rounds and it has sped up but doesn't like 60gr of 2217. It is happy between 59 and 59.5gr of 2217 and I'm currently running 59.5gr of 2217 with BR2 primers as well as CCI magnum primers, no noticeable difference between the 2. I have Federal primers but haven't tried them, they're more of a fail safe if I ever run out of CCI. I'm getting about 2820fps so it's no rocketship but is accurate and the SD is 7fps. I worked up to 61gr but accuracy wasn't great, the SD opened up but there were no pressure signs.

Think I may have found a node with 2213sc. Ran 59gr today and that seemed to be just as accurate as 2217 but travelling around 2920fps, no pressure signs. I have tried 59.5gr of 2213sc and that averaged 2965fps with an SD of 24 (over 10 shots). It might be worth running again as I wasn't focused on accuracy but rather the velocity and SD and didn't pay attention to some switchy winds when I ran that load.

Steve N
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Location: Gippsland Victoria.

Re: Prefered primer for 280AI and AR2217

#3 Postby Steve N » Sat Jan 21, 2017 11:03 pm

Thanks for the feedback Willow. My barrel and action are the same as yours but the chamber is a bit different. Not an actual 280AI but close. A Wild Dog wildcat actually. I call it a 7mm-270Win AI. I have 2209, 2213 and 2217 to try just not sure if magnum primers are better for the 2217. Sounds like 2213 might be better suited (Accuracy will decide) but I will try them all when I have a few more cases fireformed.
Thanks
Steve

PhilD
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Re: Prefered primer for 280AI and AR2217

#4 Postby PhilD » Tue Jan 24, 2017 12:43 pm

Hi Footsore,

I never reached my target speed with the 2217, i ran out of case in my 280AI for 2217, and only reaches 2920fps.

I was using BR2 large primers and a very limited trial with Federal 210m.

I am using 2213sc and have no issues reaching my target of 2960 fps and found quite a wide powder node with quite nice grouping, even out at 1000yds.

2209 was giving pressure signs from about 2890+ fps.

PhilD

Steve N
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Joined: Tue May 14, 2013 8:16 pm
Location: Gippsland Victoria.

Re: Prefered primer for 280AI and AR2217

#5 Postby Steve N » Tue Jan 24, 2017 1:09 pm

Thanks for the feedback Phil. Sounds like you have yours going really well.
If that's the rifle you used at 800m at Canberra it certainly does the job.

Steve.

plumbs7
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Re: Prefered primer for 280AI and AR2217

#6 Postby plumbs7 » Tue Jan 24, 2017 4:54 pm

I have a spare 7 mm barrel and am seriously considering this cal ? Steve and Phil is there much of an advantage using this cal in practice against the .284's ? Like I know on paper another 100 fps but in the real world at 1000 yds is it worth it ? Regards Graham :D

PhilD
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Joined: Mon Sep 14, 2015 3:49 pm

Re: Prefered primer for 280AI and AR2217

#7 Postby PhilD » Tue Jan 24, 2017 5:09 pm

Hi Graham,

I've never owned a .284 and my only other barrel is a 6mm Dasher, so I'll leave the comparisons to others.

As for the calibre itself, I really like it. I use it from 300 all the way out to 1000yds. For a one barrel, one Queens option, I don't think there are many better.

I'd like something a little bigger for some of the longs, the 7 SAUM seems to be going quite well at the 1000yd mark (and most of the FCWC team is shooting them). Need to convince myself I don't need a 7mm Jacko :P

Cheers,

Phil

Steve N
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Re: Prefered primer for 280AI and AR2217

#8 Postby Steve N » Tue Jan 24, 2017 5:34 pm

plumbs7 wrote:I have a spare 7 mm barrel and am seriously considering this cal ? Steve and Phil is there much of an advantage using this cal in practice against the .284's ? Like I know on paper another 100 fps but in the real world at 1000 yds is it worth it ? Regards Graham :D


Graham I haven't felt under gunned at 1000 with my 284 beside 280ai's and 7saums but I have a heap of once fired 270 win brass for this so apart from a couple of Lee dies I haven't had to outlay much. So in this case it may be worth it.

To me the 284 is the perfect calibre from 300 through to 1000 and and has proved to be more than capable when I do the right things and I will continue to use it.

However... I like having more toys to play with and that's one of the great things about F Open. The 280ai is about as big as I can go with a standard boltface. I also have a 6.5 on the way and one other smaller calibre keeps nagging at me.

Steve.

Norm
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Re: Prefered primer for 280AI and AR2217

#9 Postby Norm » Wed Jan 25, 2017 8:39 am

Get a Dasher Stephen.... You know you want one!!!! :twisted:

plumbs7
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Re: Prefered primer for 280AI and AR2217

#10 Postby plumbs7 » Wed Jan 25, 2017 9:38 am

Hi Phil and Steve , phil long time no see ! ( if it's the Phil that I think it is?) well I have 2 cracking .284 barrels after dev squad and a cracking 7-08 Ai . Thought was of chambering the 30"Lilja 3 grove after not making the team , into 7-08 Ai again . But since all the top shots are going to run Saums at 2950 fps I think I'll have to join them . Also fun too play around with new cal anyway! Are dies easy to get hold of ? I'll run a knob too just like the 7-08 Ai barrel. No pink pits though lol!
Also thanks for the help too! Regards Graham.

watrob
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Joined: Thu Oct 20, 2016 3:02 pm

Re: Prefered primer for 280AI and AR2217

#11 Postby watrob » Wed Jan 25, 2017 9:56 pm

plumbs7 wrote:Hi Phil and Steve , phil long time no see ! ( if it's the Phil that I think it is?) well I have 2 cracking .284 barrels after dev squad and a cracking 7-08 Ai . Thought was of chambering the 30"Lilja 3 grove after not making the team , into 7-08 Ai again . But since all the top shots are going to run Saums at 2950 fps I think I'll have to join them . Also fun too play around with new cal anyway! Are dies easy to get hold of ? I'll run a knob too just like the 7-08 Ai barrel. No pink pits though lol!
Also thanks for the help too! Regards Graham.


Hi Plumbs,

Have a look at the true 7mm WSM, (case is a little longer than a 300 WSM up to the neck shoulder) and not a 7mm/300 WSM (which has a shorter case to neck shoulder and is closer to a 7mm SAUM). I had my neck extended so the case neck grows to .270" trimmed, instead of the .250 whereas the 300 WSM neck is .300" and you trim that to .290".

At 66.00gr of 2217 with 180 gr Berger VLD's its running at a good 2950fps, the loads are not compressed at all and not flattening primers or over expanding cases. I Boron coat my bullets & Boron swab my barrels, at 450 round I have no throat erosion and will get thru the 2017 season with this barrel.

Shooting one ragged hole at 100 yards after the first 30 rounds and still shoot the same at 450 rounds 3 months later, I am quite happy to replace a barrel in the off season. I feel any barrel once reaching the 900 to 1400 round mark is getting tired and I know 7mm WSM is on the lower end of that number. So rather having a barrel go off mid season I would rather replace it than wait for it to go off tune.

I found die's easier to get and had the gunsmith ream me a seater die and a .005 bump neck bushing die from blanks. This bushing die also necks down the 300 WSM brass to 7mm, neck turn, trim, fire-form, etc all done.

plumbs7
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Re: Prefered primer for 280AI and AR2217

#12 Postby plumbs7 » Wed Jan 25, 2017 10:45 pm

Thanks Watrob, but only have a .308 bolt face so I'm governed to that unfortunately :?

Steve N
Posts: 462
Joined: Tue May 14, 2013 8:16 pm
Location: Gippsland Victoria.

Re: Prefered primer for 280AI and AR2217

#13 Postby Steve N » Thu Jan 26, 2017 7:12 am

Graham the dies I have been using are a Lee collet set for straight 280 REM and a Redding body die for 280 AI which I haven't used yet and may have to modify. (My case is not a true 280 AI)
I have also made use of my 7-08 dies for neck turning etc.
As I said pretty cheap to set up for compared to 7 saum.
You wouldn't have a recommendation on which primer would be my best option for AR 2217 would you? I haven't got past the fireforming stage yet and still looking at components to start load testing with.
Steve

plumbs7
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Re: Prefered primer for 280AI and AR2217

#14 Postby plumbs7 » Thu Jan 26, 2017 11:02 am

Steve , for my edge I was using fed 210's to light up 89 gr of retumbo or ar 2225 pushing 300 gr hybrids about 2760 fps 28" lilja , and had better SD's than using mag primers . I would imagine using the same combo in a cold climate would effect ignition problems. I have been having good success with Ci 200's ( Br 2) in other chamberings. So Maybe start there . Is your 7-08 Ai still in the naughty corner ? It's a shame you had trouble with that barrel !

Steve N
Posts: 462
Joined: Tue May 14, 2013 8:16 pm
Location: Gippsland Victoria.

Re: Prefered primer for 280AI and AR2217

#15 Postby Steve N » Thu Jan 26, 2017 11:15 am

Thanks Graham.
I will start with Fed 210m and see how they go.
Yep the 7-08ai barrel has been recut and retested then retired to lean against the back wall of the safe. I have heaps of brass for it so one day might have another go at it.
Steve.


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