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Sierra 155 gr. HPBT PALMA

esweber

Private
Minuteman
Apr 26, 2012
10
0
62
Missouri
Would these work in a tikka with 1-11 twist will be shooting 500 to 800 yards thinking to start with 43 or 44 grains varget.
Any thoughts would be great
 
Re: Sierra 155 gr. HPBT PALMA

No reason it shouldn't. I ran as much as 46 grains of Varget with the old 155 Palma with no issue in a 1/12" barrel.
 
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

Where did you get these bullets .I thought Sierra Quit making them a few years ago ?.Arnie
 
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

Try using H4895 in that shorter barrel. I can get over 3000 fps in my 24 in with it. 45-46.5 is a good place to look.
 
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

I load 155 vld, 47gr varget in lapua brass. The velocity seems to be right around 2825 to 2850. I tried 47.5 grains but had a primer pocket fail so I backed up.
 
Re: Sierra 155 gr. HPBT PALMA

My brother in law uses the palmas with the power pro 2000 mr and gets great velocity out if his sps varmint.
 
Re: Sierra 155 gr. HPBT PALMA

Ok got to try a few different loads today
44 g 2650
45 g 2715
46 g 2721
will bump it up to see what that will do
 
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

46-46.5 Grains of Varget in a Lapua case, or 47 grains in a Winchester case is a fairly standard PALMA load.
 
Re: Sierra 155 gr. HPBT PALMA

Ya my next small batch will be 46.5 and see what it will give me.
Thanks for all the good info have to learned a lot great group of guys/gals
 
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
 
Does anyone have any updates on loading the 155 palmas with 2000mr or arcomp?