Grouping with an ES problem.

[BergerBoy]

Thanks for your time guys,

I have just put a new barrel on a custom 300 wm and I have had my ES open up big time. From ~ 15 fps or less to ~ 50 fps or more. The funny thing is is that some of my most accurate loads/best groups (.5 MOA sometimes less) at 100 and 200 yds are the ones with the worst ES spreads. I guess for hunting that would still work bc a 50 fps. lose with what I shoot will be about 11 in. @ 1k yards and I would not shoot game past 800 yds. I do like to shoot out past a mile when I have great weather and with an ES like that it would be impossible to do with any accuracy.

Should I change my load completely? Any other ideas?

Thanks

 

[jimbires]

if your groups are not showing a lot of vertical because of the velocity ES , I'm guessing your chronograph is lying to you .

 

[NW Hunter]

Go ahead and shoot long range and see what it does. It's much easier than over- thinking it. Save your barrel life and have fun.

 

[BergerBoy]

if your groups are not showing a lot of vertical because of the velocity ES , I'm guessing your chronograph is lying to you .

What's to show at 100 or 200 yards? I see it when I shoot past 1400 and 1700 yards much worse.

I just thought with groups that good at 100 and 200 yds. I wouldn't have much of an ES. Usually I am under 15 fps but not now....

 

[scottishkat]

What powder bullet and primer combo are you using. Also what temperature at range. H1000 has been very stable and accurate in mine.

Good luck and shoot straight

Bob

 

[Pdvdh]

New barrel = new load workup.

 

[BergerBoy]

New barrel = new load workup.

Copy that...




75 gr. H1000 for 230 gr. Fed 215M
72 gr. 7828ssc fir 215 gr. " "

Thanks for responding.

 

[DocB]

New barrel = new load workup.

+1 ... absolutely concur.

DocB

Animo et fide "Courage and Faith"