OzFclass

Hi all,
Today I was testing my 223 with the 80gn SMK with 25.0 of 2208 with a velocity of 2810 and an ES of 10fps but i cannot put much more powder in the case (lapua match)and I recon i wont be able to get anymore the 25.8 in the case before it becomes compressed. Will 2810 be alright or will I have to change something.

see ya all later,

mitchell

Mitchell,

I would be looking at a velocity of around 2950 as a minimum (I run 25.4 of 2208 @ 3050 out of a 30" 7.7T for <or= 5fps ES)but it would depend on what barrel length and twist rate you have.
Your reloading techniques must be sound to get a low ES so you are half way there!!!
Ultimately, you will have to conduct a ladder test to find the most accurate load for YOUR rifle. Don't think of this as being extra work because it is quite entertaining to discover the results...all-be-it many rounds and combinations latter.
Many people swear by Lapua but I get my best results from Winchester and Rem 7.5 primers whilst FL resizing EVERY time and batching projectiles in 0.1Gr lots.

Regards

Littlebang556 Rob

Also you may be interested in the posts in 5.56 loads

Regards

Littlebang556 Rob

In PMC cases up to 92.5 grs wt, I used a 210mm drop tube to fill cases.Usually 25.3grs. Now use 2206H @ 24.3grs for 2953 fps.
Have not been able to get E-S down that low.Best I can manage is around 30fps.
Far more important to have accuracy,than bragging velocities.
mike.

I think I might just fill the case to the brim and hope for the best

Maybe 25.5 will fit in the case I will try it tomorrow. yesterday I put the data into the point blank software to see how it compares to my 6mmbr using the 105 A-MAX out to 1000yards it seems to be only be about 2 MOA behind the 6mmbr and about 150fps behind in velocity. Maybe the software is faulted or I put the data in wrong.
Thanks, anymore help will be greatly appreciated BTW my barrel is 28 inch MAB crome moly in 1:8 twist.