Only line that matters.
That brass tube that rifle manufacturers and their marketeers make such a fuss over is simply a bullet delivery system.
Prime concerns should be-
1. How good is the bullet?
2. Is it readily available? (I.E not a Berger or Nosler made unobtanium or first-born child price)
3. Will it be accommodated by the 'standard' twist-rate (or large manufacturer offered) in a certain chambering?
4. Is it easy to acquire a rifle that will accommodate the above?
Worth nothing that the 25CM is popular in PRS and NRL Hunter competitions in the states, simply because it offers a slight edge over the 6.5 CM if you are shooting a 'power-factor' ranked competition (NRL Hunter). The first high-BC VLD type bullet was the 131 Blackjack bullet, made on contract by Sierra, who in turn decided not to fulfil the company's orders in order to swipe the design and market for themselves (another company whose bullets I will no longer use, due to their habit of putting a wrong cal into the box every so often...)
So, that leaves Hornady who decided to offer 25 CM brass in 2025. However, there does seem to be a slight disagreement in spec between a few brass manufacturers (Starline, Hornady and Alpha Munitions), namely in neck length.
I had sourced some 25 CM bullets and brass but decided to ditch in the end in favour of 6.5CM, glad I did!
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