Thread: 6.5 Creedmoor load development

Originally Posted by 10-Ring

Just goes to show how much variation there is between different rifles. With my Tikka T3x 6.5 CM 45gns of 2209 will only reach slightly below the neck shoulder junction with Lapua fire formed cases. My overall cartridge length with the 140gr ELD-M is 2.940 and the base to ogive is 2.240 - both measurements seated .010" off the lands. I don't use 45gn 2209 in my rifle but have done so safely.

The best thing I did after I bought my 6.5 Creedmoor was to ditch my old CHRONY as it was very inconsistent in it's accuracy and buy a Labradar. Currently testing the Peterson SR brass too.

Please keep up the excellent reports Wingman - very interesting.

Thank you for those OAL figures buddy, that goes to confirm my theory of various throat lengths from the various manufacturers.
I can now make sense of how you fit larger 2209 charges without the high pressures I was seeing in early testing.
My modified throat now take loads almost the same dimensions you have given me and Id have no doubt if I replicated your loads now they would be safe in this rifle "hypothetically speaking and considering all other variables such as barrel internal diameters twist rates and rifling design and drag were equal.."

When the Remington was set up in its std tupperware stock with the internal mag, the internal mag dimension was 1.80" give or take but there was no way you could seat your bullets out even that far in this rifle because even if you could get them to feed past the feed ramp they logged well into the lands at that length.
I think it would be fair to say even certain factory loads in this rifle would be running too much pressure. The Hornady super performance for one would be a brass killer should someone want it to feed to one of these std factory chambered Remingtons.