difference between Rem SF and Hevishot approved Rem SF

[nyhunter]

Mainly I'm lookin for the constriction Difference between the 2. And If anyone has tried both side by side for a comparison with the HTL loads, If so which one patterned better ?

[BrowningGuy88]

.572 and .575 I believe.

[gophert]

.572 and .575 I believe.

I have the HeviShot/Steel/Lead approved one that is no longer made.  It is .570

The older (Lead Only) RSF was .572

The new one's today, I have no idea. They could be .570-.575.