Previous Thread
Next Thread
Print Thread
7-08 vs 280AI #211330 01/13/2022 5:14 PM
Joined: Nov 2019
Posts: 205
gunslingerdad Offline OP
enthusiast
OP Offline
enthusiast
Joined: Nov 2019
Posts: 205
what am i going to gain by going from a 7-08 to a 280 AI in a 15" barrel? I know several of you have both in similar guns. Is there enough difference for a rechamber if you are going to keep your shots under 400 yards. currently shooting a 140 vld berger at 2614 fps.
Thanks
Dave


still Dave Thomas, just an alias so the gov't dont find me
;\)
Re: 7-08 vs 280AI [Re: gunslingerdad] #211331 01/13/2022 6:32 PM
Joined: Jan 2004
Posts: 5,485
Ernie Offline
Distinguished Master
Offline
Distinguished Master
Joined: Jan 2004
Posts: 5,485
Originally Posted by gunslingerdad
what am i going to gain by going from a 7-08 to a 280 AI in a 15" barrel? I know several of you have both in similar guns. Is there enough difference for a rechamber if you are going to keep your shots under 400 yards. currently shooting a 140 vld berger at 2614 fps.
Thanks
Dave

Guessing 200-250 fps faster
My 280AI has a 17" barrel and is running 140AB's (factory Ammo) at 2961. Even if I subtracted 35 feet per second times two for a 2 " shorter barrel, it would be running about 2890 fps.
That is significant, and I would want a Berger to be doing at least 2000 fps impact velocity.


Ernie the Un-Tactical
Re: 7-08 vs 280AI [Re: gunslingerdad] #211333 01/13/2022 11:47 PM
Joined: Nov 2019
Posts: 205
gunslingerdad Offline OP
enthusiast
OP Offline
enthusiast
Joined: Nov 2019
Posts: 205
thanks Ernie, is that factory recommendation for 140 bergers impact velocity of 2000 fps. I notice that you shoot alot of AB's do they expand at quite a lower velocity?


still Dave Thomas, just an alias so the gov't dont find me
;\)
Re: 7-08 vs 280AI [Re: gunslingerdad] #211334 01/14/2022 1:09 AM
Joined: Jan 2004
Posts: 5,485
Ernie Offline
Distinguished Master
Offline
Distinguished Master
Joined: Jan 2004
Posts: 5,485
I have quit using Berger's for hunting big game.
they say, 1800 fps minimum impact velocity, but when Aaron Davidson was using them at Gunwerks, they determined that 2000 fps was the minimum impact velocity.
They no longer use Berger's for hunting, as far as I know.
E


Ernie the Un-Tactical
Re: 7-08 vs 280AI [Re: gunslingerdad] #211335 01/14/2022 2:04 AM
Joined: Nov 2019
Posts: 205
gunslingerdad Offline OP
enthusiast
OP Offline
enthusiast
Joined: Nov 2019
Posts: 205
good to know, thanks


still Dave Thomas, just an alias so the gov't dont find me
;\)
Re: 7-08 vs 280AI [Re: gunslingerdad] #211336 01/14/2022 4:13 AM
Joined: Jan 2004
Posts: 5,485
Ernie Offline
Distinguished Master
Offline
Distinguished Master
Joined: Jan 2004
Posts: 5,485
I know a lot of folks, who use them, but I am using other bullets


Ernie the Un-Tactical
Re: 7-08 vs 280AI [Re: gunslingerdad] #211342 01/15/2022 1:43 AM
Joined: Mar 2014
Posts: 3,003
Zee Offline
Shooting Expert
Offline
Shooting Expert
Joined: Mar 2014
Posts: 3,003
Speed kills.


"To Hell with efficiency, it's performance we want!" - Elmer Keith
Re: 7-08 vs 280AI [Re: gunslingerdad] #211345 01/15/2022 2:23 AM
Joined: Oct 2013
Posts: 533
Duke3026 Offline
addict
Offline
addict
Joined: Oct 2013
Posts: 533
Shots under 400yds. Certainly, donít need to worry about high b.c. bullets. Nothing a Partition wonít handle inside that range.

Re: 7-08 vs 280AI [Re: gunslingerdad] #211348 01/15/2022 12:03 PM
Joined: Jan 2004
Posts: 5,485
Ernie Offline
Distinguished Master
Offline
Distinguished Master
Joined: Jan 2004
Posts: 5,485
Partitions would do fine, as would most cup/core bullets.
I use to use the 140 grain Partition in my 15.75" 284 Winchester XP-100 for elk. Longest shot was just under 550 yards on a bull-They work.

GSD,
Is this for deer, or game bigger than that?


Ernie the Un-Tactical
Re: 7-08 vs 280AI [Re: gunslingerdad] #211354 01/16/2022 2:43 AM
Joined: Nov 2019
Posts: 205
gunslingerdad Offline OP
enthusiast
OP Offline
enthusiast
Joined: Nov 2019
Posts: 205
deer, hogs and possibly elk. I have had good luck with bergers in my rifles but have pretty much mothballed them, have a bunch loaded for the 7-08 and shot an antelope with it but it was hardly a test at 74 yards.


still Dave Thomas, just an alias so the gov't dont find me
;\)
Re: 7-08 vs 280AI [Re: gunslingerdad] #211355 01/16/2022 12:24 PM
Joined: Jan 2004
Posts: 5,485
Ernie Offline
Distinguished Master
Offline
Distinguished Master
Joined: Jan 2004
Posts: 5,485
For a max of 400 yards, I would still prefer the greater horsepower of the 280AI over the 7-08 for elk.
I took your MV for the 140 Berger and ran it through my ballistic app and you have right at 2081 at 400 yards with the Berger.
Even though the 140 AB I have has a lower BC, my impact velocity at at 400 with the 280AI is 2214.
Just some numbers for you to consider as you make your decisions.


Ernie the Un-Tactical
Re: 7-08 vs 280AI [Re: gunslingerdad] #211356 01/16/2022 8:19 PM
Joined: Nov 2019
Posts: 205
gunslingerdad Offline OP
enthusiast
OP Offline
enthusiast
Joined: Nov 2019
Posts: 205
thank you for doing that. faster is better no doubt.


still Dave Thomas, just an alias so the gov't dont find me
;\)
Re: 7-08 vs 280AI [Re: gunslingerdad] #211361 01/17/2022 3:53 PM
Joined: Jan 2004
Posts: 5,485
Ernie Offline
Distinguished Master
Offline
Distinguished Master
Joined: Jan 2004
Posts: 5,485
Originally Posted by gunslingerdad
thank you for doing that. faster is better no doubt.


You are welcome.
E


Ernie the Un-Tactical

Moderated by  Chance Weldon, Gary, Gregg Richter 

Newest Members
Redhawk41, Striker243, Sxviper, RobbieD, IRONMAN
9668 Registered Users
Top Posters(30 Days)
Ernie 7
karl 2
45BBH 2
tjvct 1
Who's Online Now
0 registered members (), 24 guests, and 0 spiders.
Key: Admin, Global Mod, Mod
Powered by UBB.threads™ PHP Forum Software 7.7.3