Changing Brass & Primers

[rwdwrt]

I have worked up a couple of loads for Savage 10FP 308, 20in Barrel
Sierra 168MK
Feberal Brass
Federal 210 Primer
45gr BLC-2 Powder

Nosler 165 BT
Feberal Brass
Federal 210 Primer
44.5gr BLC-2 Powder

What should I expect to have to change as far as powder charge if any by changing to Lapua Brass with CCI-BR2 Primers? What about Whinchester Brass?
The Federal brass is begining to wear out and the Fed 210 primers are difficult to find so I ordered some more durable brass (I hope) and going to try the CCI Primers

 

[45ACPUSER]

Simply put you start over! New parameters means a whole new work up for your loads. Plain and simple, there is no work around! Are you neck sizing your brass? Better yet are you using a bushing die to help with decreasing the work hardening?

 

[USSR]

rwdwrt,

Right off the bat, I can tell you that the move to Winchester brass with identical loads will result in lower pressure and velocity. With Lapua brass, I cannot say and would suggest reduced charge weights and working your way up to what that brass can handle.

Don

 

[rwdwrt]

Thanks Guys, you've confirmed what I thought.

I have only been reloading a short while so I full resize always at this point.
But I have read where some are just neck sizing when reloading for the same rifle.

 

[rwdwrt]

Thanks Guys, you've confirmed what I thought.

I have only been reloading a short while so I full resize always at this point.
But I have read where some are just neck sizing when reloading for the same rifle.

 

[Sunray]

"...when reloading for the same rifle..." For the same bolt action rifle only. Semi-autos require FL resizing every time.
If you change any one component, you must work up the load again. It's not as big a deal if you're just changing the brass though. Changing primers most certainly requires working up the load again.
"...decreasing the work hardening..." The necks and shoulders are going to get work hardened anyway. Repeated firing and resizing does it.

 

[Ifishsum]

Changing brass can have a sizable effect on pressure, as some brass is thicker than others. When I started loading I had a .30-06 load that was worked up in Winchester brass, I tried loading it into Federal brass and got obvious pressure signs - sticky bolt lift, cratered primers. I thought I was safe because I was 1.5 grains under book max.

My observations are that Federal brass is typically thicker, Winchester is typically thinner, and Remington is in between. I've got no experience with Lapua or Norma.