upper node for 155 grainers with Varget

[wisam]

I just started experimenting with 155 grain bullets (SMK palmas) in my .308. I was wondering where you have found the max load to be with these bullets with Varget.

I found a good node at around 45.5 grains, but I don't get the velocity I want as I'm trying to make a load for beyond 1000. Most of my manuals say 47 is the max load, but the groups open up substantially at that load. I have one manual with a max load of 48 grains.

I've got a hunch that 48 grains will be in the next node, but I'm wondering if it's worth pushing this hard.

 

[2Shots]

Re: upper node for 155 grainers with Varget

Last I shot these I was using 47 grains. I think the velocity was almost 2900 fps. Pressure was ok.

 

[shoepop]

Re: upper node for 155 grainers with Varget

Varget 48.6 here with Sierra 155 2156's, Lapua brass. Get's me ave. 2904 FPS and 1/2 MOA to 600, past that 1 MOA- due to my inability. Rifle TRG 22.

 

[memilanuk]

Re: upper node for 155 grainers with Varget

The 'upper node', so to speak, is up around 3125-3150fps.

Yes its friggin' hot. 47+ (emphasis on the '+') gn of Varget and a loooong barrel.

Most people (including me) find that the 'normal' 2950-3000fps node works *just* fine.

 

[MitchAlsup]

Re: upper node for 155 grainers with Varget

I use a 47.8 gr Varget in Win cases pushing 155 Scenars at 2925-2950 fps from a 24" tube. (47.4-5 for Lapua cases). 1000 yards at 31.2 MoA

Caution this load is right at the edge of sane pressures. And by that I mean I have a set of these Win cases that have been reloaded 29 times and most of them are still in good shape; 46 out of 50.

 

[Bacarrat]

Re: upper node for 155 grainers with Varget

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Mark S</div><div class="ubbcode-body">Varget 48.6 here with Sierra 155 2156's, Lapua brass. Get's me ave. 2904 FPS and 1/2 MOA to 600, past that 1 MOA- due to my inability. Rifle TRG 22. </div></div>

What length barrel TRG22? I am assuming 20"?

My rifle, it depended on the brass. Nosler was 47.1gr and Lapua was 46.8gr. Any hotter, it would start to string vertically.

 

[BOLTRIPPER]

Re: upper node for 155 grainers with Varget

the 155's pushed hard favor an 11.27 twist to stay grouped,,,,however at distance with any sort of a tail wind goofs on left'right accuracy.....not enough ass behind these boolits

 

[shoepop]

Re: upper node for 155 grainers with Varget

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Bacarrat</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Mark S</div><div class="ubbcode-body">Varget 48.6 here with Sierra 155 2156's, Lapua brass. Get's me ave. 2904 FPS and 1/2 MOA to 600, past that 1 MOA- due to my inability. Rifle TRG 22. </div></div>

What length barrel TRG22? I am assuming 20"?

My rifle, it depended on the brass. Nosler was 47.1gr and Lapua was 46.8gr. Any hotter, it would start to string vertically. </div></div>

Barrel stock 26". I was shooting for 2900 FPS and accurate, I got it at 46.8 and stopped. Vertical is super as is SD.

 

[Bacarrat]

Re: upper node for 155 grainers with Varget

Was it 48.6 or 46.8? 48.6 would be one hell of a load. I haven't heard of too many people running them that hot.

My 18" TRG would push the 155s 2740fps with the 46.8gr load. So about 20FPS for every inch chopped off. I can live with that.