Just wondering, I'm trying out for the Missouri Junior High-Power team pretty soon. If I had a 260 Rem built, then had another 6.5mm cartridge that was faster for long range hunting so I could use the same bullets. What could I achieve with the 140 grain bullets, or maybe the 169 grain Wildcats?
Through the years I have necked all kind of cases to 6.5 with the largest being the 8mm rem mag and the 300 wby. With those two you have a very short window of premium accuracy. I have necked the ultramag to everything from 7mm on up. The 7mm was a big mistake. Not worth a dang. I did three of them with 31" match barrels for long range with heavy bullets. Barrel life with premium accuracy was extremely limited. Of all the 6.5's I have done the best combination of performance and barrel life was with the 6.5/06 imp. 6.5 gibbs, and the 6.5/284 but on a long action because of seating that long 140 grain bullet. These are a pleasure to shoot, have good barrel life and you can easily take out a deer at half a mile with them. I have a 264 winchester that shoots lights out but again probably not for long. The 6.5 gibbs will shoot right with the 264 winny with less powder.
Predictions are difficult, especially when they involve the future
Well I've been wanted a 338 Edge, but then I saw that 260 Rogue in the classifieds. If I got that for high power shooting, I could just get another barrel for a different cartridge/same caliber. Maybe use the same bullets, primers, everything except cases and bolt head.
I kicked around a 257/6.5 rum and ended up buying a 300 rum as the donor rifle and liked it enough i never switched. Im not happy with the brass though, if i didnt have $200 in dies and another $150 in brass i would gladly switch to a 300-338 Lapua.