Sierra 155 gr. HPBT PALMA

Re: Sierra 155 gr. HPBT PALMA

Thats what I am surrently running but mine is a 1/10 twist. You should be fine. From my experience they like to be pushed to about 2900fps and they are awesome. I have pushed these out to 1123yds with consistent hits. Have fun
 
Re: Sierra 155 gr. HPBT PALMA

I'm at 47gr Varget with moly-coated 155Palma in a Steyr SBS Tac with Win brass. Velocity is 2925-2950 and accuracy is excellent.

Some people go to 47.7 without moly with this combo.

I think you definitely want to hit 2900fps+ if your barrel is long enough.
 
Re: Sierra 155 gr. HPBT PALMA

I am running a 22" barrel and I am getting about 2925 out of mine. I am using alliant AR-Comp powder though. Dont know if you will get that out of varget and 20". My buddy was pushing these out of his 20" but he was getting about 2825 or so but he wasnt pushing them as hard as I was. I loaded his with ar-comp also. He as well was hitting 1123 very consistant.
 
Re: Sierra 155 gr. HPBT PALMA

I ran them with as much as 48 gr of varget in winchester brass with great results in a 1-12 twist but the brass primer pocket didn't last long.
 
Re: Sierra 155 gr. HPBT PALMA

I have pushed them as hard as 47.8 gr Varget in WIN cases (47.4-5 gr in Lapua cases). Sierras bullets are just a tad lower on the BC scale as are the Berger FullBore and the 155 Scenars.

Note: I'm getting 30+ reload cycles on Win cases at 47.8 gr in a 1:12 barrel.
 
Re: Sierra 155 gr. HPBT PALMA

I gun the 155 NCCs(no discernible decrease in accuracy as opposed to the SMKs) over 46.5g Varget. No chrony data, but I am assuming they are moving along at a smart clip.

Note that the Nosler CCs are about $100 cheaper per 1k than the SMKs.
 
Re: Sierra 155 gr. HPBT PALMA

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: nashlaw</div><div class="ubbcode-body">I gun the 155 NCCs(no discernible decrease in accuracy as opposed to the SMKs) over 46.5g Varget. No chrony data, but I am assuming they are moving along at a smart clip.

Note that the Nosler CCs are about $100 cheaper per 1k than the SMKs. </div></div>

I'd be interested to hear what kind of accuracy you're getting with this load? And what brass are you using?
 
Re: Sierra 155 gr. HPBT PALMA

I'm running 155 A-max's over 46 gr of Varget at just over 2900 fps. They shoot great out to 1k yards, and cost way less than smk's!!!!!!
 
Re: Sierra 155 gr. HPBT PALMA

Im going to be loading them with 43 varget and 44 @ 2.8 to see what they will do out of a 20" 1-12 Remmy SPS. Its a short range load though, only 300 yards. Someone else I know loads them with 46 grains of varget out of a 26" Howa at over 2900 fps and gets good results. Shoots X's all day.

Sierra 155 Palma's recieved good reviews on accurateshooter but not as good as the berger 155.5. They were shooting 3 MOA less at 1000 then the old sierra 155's and the group was 7" smaller. Think the BC is around .509, almost positive.
 
Re: Sierra 155 gr. HPBT PALMA

Hell I'm not sure i can see a 1000 lol kinda limited to where i can shoot 200y is about it for now. but have put a app into a privet club that gos to 1000 hope to hear from them mid month