Am I doing something wrong?

[Caleb85]

Any and all opinions welcome, 6.5-47L , h4350 , 140 hybrids, br4. All shot at 300 yards. 29" 1.250 straight. It has been cold out with light to no mirage. Note: 2.130 is .43 jump, and the group with an SD of 36 was new brass and the rest is with 1X.

 

[Shynloco]

Might I suggest you check your Action Screws as well as making sure your scope is tight. That's the first things I'd look at. The next thing would be my setup to make sure you aren't having up and down movement. Either of those two areas could be the culprit in that vertical stringing.

Alex

 

[LCazador]

Discount the group with the new brass. Even though it may have shot better this time, new brass is not going to offer the consistency that fireformed brass is going to render. I think you need to work on your seating depth with the fireformed brass. You haven't found the right node yet. You may also want to work with a slower powder like RE-17

Any and all opinions welcome, 6.5-47L , h4350 , 140 hybrids, br4. All shot at 300 yards. 29" 1.250 straight. It has been cold out with light to no mirage. Note: 2.130 is .43 jump, and the group with an SD of 36 was new brass and the rest is with 1X.

You may have a bit too much jump. Have you tried coming in from the .43" jump in 10 thousands increments with the fireformed brass? Use only fireformed brass for your load work. While a fireform load in new brass may print a better group, it will not be consistent. Work on a node that will work with your fireformed brass and bump one or two thousands when sizing. If you're not neck turning, I'd suggest you do. Some recent Lapua brass I bought showed a difference of almost two thousands in neck thickness. This will play a big role in consistent neck tension.

 

[butchlambert]

Surely he meant .043 and not .430.

 

[MGYSGT]

Targets look like .5 MOA at 300 yards. Wish all my rifles did that. Bet there still was some mirage, if only from the barrel.

 

[Caleb85]

Surely he meant .043 and not .430.

Sorry butch, yes your right

 

[ShootDots]

It appears from the target that you are using 41.3grs of H4350. Good powder, good bullet and in my opinion, the right primer. So what's the problem? I have had "more than a few" 6.5 x 47 Lapuas. I have never seen them shoot well, with 140 class bullets using charges over 40.4grs. Most everyone I know and everyone I have shot with 140 class bullets and H4350, shoots right at 40.0 to 40.2grs.. Go much over that and I find myself in a scatter node. Try backing down from your 41+ grains to start at 39.7, 40.0 and 40.3. I would bet a tidy sum that you will find a really good load inside those parameters. Additionally, if you try those loads, start that Hybrid at 17 thousandths off initially..

 

[hogpatrol]

Another vote here for RL-17 powder.

 

[normmatzen]

I have been working on characterizing RL-16 to replace RL-17 in my 284 WIN BR gun as well as my 7X57 hunting rifle. That is, when it stops raining!
I have found RL-16 shoots way better in my 284WIN than H4831sc as well as RL-17.

I have just read a couple threads where folks are using RL-16 for their 6BRX loads so I will try that in my BR light gun! It would be nice to use only one powder for all my guns!

 

[alphapygmy]

Think about trying CCI 450. Both my 6.5x47 shot better groups and lower ES with the small mag primers when using H4350 loads, maybe because that much powder is getting close to as much as a small primer will light consistently. I'd also agree with Shootdots-go back to around 40 and try a few increments. One of mine shoots best at 39.8 the other at 40.0, lots of people shooting around this charge but your rifle may be different.

 

[Sniper338]

I think your too hot, and jump is too much. Fireformed brass and full brass prep will help a lot.

I could just not like hybrids... id try a bit more, but if it dont improve it may just not like that bullet

 

[GeorgeSpringer]

My load is 41 gr IMR4350, CCI450's and Berger 140 VLD's just touching the lands. Watching the flags this will shoot in the 2's at 200 yds. I tried BR4's and could not get good groups.

 

[21shooter]

Hi, I must agree with shoot dots John

 

[LCazador]

I have been working on characterizing RL-16 to replace RL-17 in my 284 WIN BR gun as well as my 7X57 hunting rifle. That is, when it stops raining!
I have found RL-16 shoots way better in my 284WIN than H4831sc as well as RL-17.

I have just read a couple threads where folks are using RL-16 for their 6BRX loads so I will try that in my BR light gun! It would be nice to use only one powder for all my guns!

I just started working with RL16, it's pretty much the same as RL-17 so far. The only difference is the powder coating for temp sensitivity and the decoppering additive, from what I understand. Of course you would have to tune for that specific lot, like any other powder change of lot. I hope that it will shoot "way better" like you say but I think that's "pie in the sky". I bought it to see if it's really better in our 70-110 degree climate here in Arizona and I sure wouldn't mind if my barrel cleans up better. I have a bore scope so I'll be monitoring that with big eyes !!

 

[Drop Port]

Some will shoot an upper node and some wont. If you aren't running around a .200 FB I would drop back to 40.0 - 40.5 grains and tune the seating depth.
My .198 FB shoots 140 Hybrids great with 40.5 and a BR4. I shoots scary accurate at the next node with a CCI 450. The gun will tell you what it wants to shoot, you have to figure out what to feed it.