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155 AMax for 1000 yards

Posted: Mon Mar 21, 2011 3:32 pm
by ovenpaa
Has anyone tried pushing the .308 155 Amax out to 1000 yards? I have half a box that I want to try when I get a spare minute.

Re: 155 AMax for 1000 yards

Posted: Mon Mar 21, 2011 6:58 pm
by Gun Pimp
A couple of our guys shoot 'em in 1000 yd BR in Factory Sporter.

They do OK but if I remember, according to Brian Litz, they have just about the worst BC of any of the popular 155 'match' bullets.

Cheers
Vince

Re: 155 AMax for 1000 yards

Posted: Mon Mar 21, 2011 7:59 pm
by TobyH
I used to find they were very similar accuracy to the scenar 155gr in my AI up to 600 yds. Didn't shoot any further out though.

Re: 155 AMax for 1000 yards

Posted: Mon Mar 21, 2011 8:02 pm
by TobyH
A-Max BC = 0.435
Scenar BC = 0.460

Both 155gr....

Re: 155 AMax for 1000 yards

Posted: Mon Mar 21, 2011 9:00 pm
by Scotsgun
I prefer 168gr, but more than a few swear by 175gr

Re: 155 AMax for 1000 yards

Posted: Tue Mar 22, 2011 7:51 pm
by pe4king
Scotsgun wrote:I prefer 168gr, but more than a few swear by 175gr
how do you get on with them 1000 yds + I find they are transonic at those ranges and have switched to 155gr

Re: 155 AMax for 1000 yards

Posted: Tue Mar 22, 2011 8:25 pm
by Scotsgun
Yup, i did the maths once which with my fav load came out at something like passing through at around 930yds but i find them stable and consistent.

Ballistic Co-efficients: 155gr-0.435 , 168gr-0.475 , 178gr-0.495
Sectional Density: 155gr-0.233, 168gr-0.253 , 178gr-0.268

Re: 155 AMax for 1000 yards

Posted: Tue Mar 22, 2011 8:36 pm
by ovenpaa
The only 168's I have used are Lapua Scenar and I struggled to get them to work at 1000, the 155's Scenar work incredibly well as do the 170 Lapua Lockbase as used in the 170HPS

Re: 155 AMax for 1000 yards

Posted: Tue Mar 22, 2011 9:14 pm
by Dangermouse
Did Litz not say DO NOT use 168's past 600 yards? They were designed for that range and become unstable there after.

Certainly speaking to a loader in my club, he whole heartedly agreed with those findings,

DM

Re: 155 AMax for 1000 yards

Posted: Tue Mar 22, 2011 9:40 pm
by ovenpaa
I thought it was the 168SMK that was hopeless beyond 600?

I have shot Lapua out to 800 no real problems but at 1000 they really did not work for me. These days I only use Lap 168's for McQueen with a relatively low load of N140