8x57 questions

[Guest]

Regarding the 8x57 Nosler Custom ammo, why the low velocities? In your #5 manual, you show the 200gr Partition loaded to a max charge velocity of 2698fps, but your ammo only generates 2450? I understand start charge versus max charge, but is it really 250fps different? And I also notice that your 180gr stuff is going just over 2600, which is closer to the max in your #5 manual. Just curious if I should do something different with my handloads based on some new pressure data you have.

 

[buckfever]

They do that to keep the chamber perssure down Because their's alot of old militrary rifles out thier that can't handle the higher perssure the newer rifles can. The Nosler #5 Reloading Guide will tell you more.

 

[Glock Man]

Buckfever is part correct. Old military rifles are definately a concern, but another concern is accuracy. Who cares how fast a bullet is going if you can't hit what you are aiming at? The velocity is dictated by available rifles and accuracy on the 8x57.

 

[Guest]

Roger that on accuracy, Nosler3. I am getting about the same from mid charge on up, with a mild shrinking of groups from lowest to highest charge. That's a tough problem to have, the faster it goes, the tighter the groups! I appreciate the explanation. I just didn't want to be bucking over pressure with my handloads, if there was new information out there that hadn't made the #5 Manual. I see I can relax, which is what I thought in the first place.