Re: 260 Rem pet loads
great choice in calibre....for me Nosler Custom 260 brass; 43 grains of Viht N160; 139 gr Lapua Scenar (long range target bullet but load can be used with 140gr SMK also); CCI Br 2 primers. You really need a fast twist 1:8 rather than 1:9 to stabilise the heavier bullets in this calibre.
Chronoed about 2665 +/- 10fps through my 260 Rem...and I have taken it out to 1200 yards successfully.
As always you will need to build you load and ensure it is safe in your rifle.
'Those who beat their swords into plow shares may one day find themselves under the yoke of those who chose to keep their swords...'