.243 ackley

[doug290]

i shoot a .243 ai at 600 yrds it is a nieska rec, hart 1/8 i shoot 105 lapuas and bergers am now useing rl25 at 49grs cant seem to get group under 4inch and some times for no reason 7 inch any help would be apreciated

 

[chino1969]

Try a different powder like H4831.

 

[doug290]

ok will do what speed should i be looking for

 

[MrMajestic]

ok will do what speed should i be looking for

Thought you were concerned with accuracy? ;D
Do you think you could have picked two tougher bullets to work with? Lapua's diameters and Berger's seating depth! Not that that they won't shoot but lots have been published about their quirks. What have you tried so far and what is your load specifics(jam, jump, primer, case etc.)? Re25 does seem a bit slow.

 

[doug290]

i have gone up and down on powder in and out on bullet depth seems to be better touching lands i use ccibr2 primers lapua cases have not tryed sierras i think the reason i ended up with rl25 was the crono seemed less dev. with this powder and primer combo guess i need to look more what speed is gona be accurate

 

[Gadget]

Hi,
I run VV165 48.3g BR2 105 Lap's in Lap cases jumped 10th for 3200 fps and very acurate.

Graham

 

[Chuckhunter]

Doug, I shoot 47.5 Gr's of H-4831 SC out of a nine twist Hart for a M.V. of 3232 Fps with 107 Sierra's jumping .020 With that being said it's a pretty stiff load but safe in my rifle. I would recommend backing off 10% and working up paying close attention to pressure signs. 4831SC seems to be a forgiving powder but it's always best to err on the side of caution. I know you have Lapuas and Bergers but I couldn't get them to shoot as well out of my Hart. The barrel will tell you what it likes but sometimes finding the right combination takes a little patience and a lot of experimenting. Good luck with your search.

 

[Chuckhunter]

Doug, I had lower ES and SD's with N-160 and it shot pretty well but at 500yds H-4831 consistently out shot the 160. Remember chronographs are very helpful tools but ultimately the target will tell the story.

 

[MrMajestic]

I like the way Chuckhunter thinks! ;D

 

[Bob3700]

I really like H4831sc in mine and have used the 115 DTACs a lot for 600 and 1K shooting.

The Lapua has been a very accurate bullet that I jam .020 into the rifling. At 600 yds it is as good as the 107 SMK. Not so good at 1K.

N160 is also something to try.

Bob

 

[doug290]

i do appreciate every body's time and will try all i hope this weekend what speed should i be looking for for accuracy