7x64
- Thread starter zg47
- Start date
I do, but I'm at work. What bullets were you planning on using? - dan
I've been working up some loads with the Hornady 154 gr Interbonds. When I get the details sorted out (next range trip to verify), I'll post them. I also have some 160 gr data around here too. - dan
7 x 64
I have been trying Sierra 140 gr flat base, Norma Brass, CCI 200 primers and RL 19 powder with the bullets set out relatively far as the mag well and the lands handle it.
In my BRNO 600 with 23.5 inch bbl I am getting 2820 ft/s with moa with 57 gr RL19 with no pressure signs at all. I do get a little better groups at around 2600 ft/s but I am still working with it along with the front pressure screw on the BRNO.
I am going to try a couple of more increments of .5 gr to see if I can get to 3000 ft/s with accuracy and no pressure signs. I feel that should be possible as the Norma factory gets above that -- with what powder, I dont know.
Any other inputs would be appreciated. I like the RL powders, but maybe a different brand / speed is better.
I have been trying Sierra 140 gr flat base, Norma Brass, CCI 200 primers and RL 19 powder with the bullets set out relatively far as the mag well and the lands handle it.
In my BRNO 600 with 23.5 inch bbl I am getting 2820 ft/s with moa with 57 gr RL19 with no pressure signs at all. I do get a little better groups at around 2600 ft/s but I am still working with it along with the front pressure screw on the BRNO.
I am going to try a couple of more increments of .5 gr to see if I can get to 3000 ft/s with accuracy and no pressure signs. I feel that should be possible as the Norma factory gets above that -- with what powder, I dont know.
Any other inputs would be appreciated. I like the RL powders, but maybe a different brand / speed is better.
OK, so far the 154s work best with 51 gr of 4831, and my load book tells me I used 50 gr of RL22 with the 160 gr NPs. - dan
Ok - back from the range - I have been trying Sierra 140 gr flat base, Norma Brass, CCI 250 primers and RL 19 powder with the bullets set out relatively far as the mag well and the lands handle it.
In my BRNO 600 with 23.5 inch bbl I get 2920 ft/s with very sub moa with 58.5 gr RL19 with no pressure signs at all and good standard deviations. I like it - i will stop there. a good accurate and safe round in my rifle.
Thanks to Oldbadger , Boomer and others who helped .
In my BRNO 600 with 23.5 inch bbl I get 2920 ft/s with very sub moa with 58.5 gr RL19 with no pressure signs at all and good standard deviations. I like it - i will stop there. a good accurate and safe round in my rifle.
Thanks to Oldbadger , Boomer and others who helped .
