6x47 Lapua & 80gr FB Varmint Berger?

[TOObuilder]

I have been enjoying very good accuracy with my 8 twist 6x47 Lapua shooting 105gr. Berger VLD's and RL17. Today I decided to try some 80gr. Berger FB Varmint and RL17.

I was using CCI 450 primers and started at 41gr. RL17. Worked .5gr at a time up to 42.5gr where it started to show a pretty good crater and flatened the primer a bit. These top loads were running 3520fps. I backed off to 41.5gr where the primers looked good and loads averaged 3440 fps.

Groups are not what I am used to with the 105 VLD's. Most were around .75-.80 moa. I was mainly wondering if powder such as Varget would be a better choice for lighter bullets, or is it the 8 twist?

Any of you shooting the 80gr. FB Bergers with Varget? Starting load suggestions? I would like a bit faster load with the lighter bullets but just can't get over the accuracy with the 105's. Thanks, TB

 

[Preacher]

RL-17 seems to like heavy bullets in what ever it is being used in.....
H-4350 will be more compatible with the 80 weights....

 

[waterdog]

I am shooting some 80gr Fowler FB bullets in my 6 x 47 Lapua....I am using R-15 and getting a little over 3400fps using CCI-450. Load is very accurate. Start at 37.5 or 38gr.

Also I have tried Norma 203B and get very good accuracy with it. One can use the same load info with 203B as with R-15.

My barrel is an 8 twist 25.5 inches long.

Hope this helps.
Larry Isenhour

 

[TOObuilder]

Well I tried Varget from 35.5-37.6 grains and H4350 from 41.5-42.5 grains. Some CCI450,s and some CCI BR4's. I think my barrel just likes the 105 VLD's. No terrible groups but most in that .75 range. 42gr of H4350 seemed about the best and was right at 3400 fps. A good enough load to burn up the rest of my bullets on some pigeons.

I guess I just found a good excuse for a new 12 twist barrel if I want to shoot the lighter bullets. TB

 

[Glocksig]

I'm using IMR 4064 at 41.5 g in a 6mm Rem. Getting 3450 and .1 to .2's consistently.

 

[skeetlee]

I would play with your seating depths. no reason that i can see why your barrel wouldnt shoot them better than that. Barrels are a lot like women, you never really know what your going to get. Lee

 

[stosh]

I have good luck with VVN 550 41.0 with 88 bergers for 3400fps.
Stosh