Needed something to shoot while the .280II barrel was cooling, so I shot the RMEF .35 Whelen Ultra, .45-70 Handi and scoped .45-70 BC in the mean time.
Shot the 225gr TSX with 57-61.5gr of RL15, the same load as MattParliament was shooting in his 22" Whelen, never really found an accurate load, 1½" was the best I got, but I also never got any pressure signs even at 2895fps, so I'll load up some more continuing on up in ½gr increments to see where it goes. Also may have to adjust COL, these loads were the recommended .050" off the lands.
Also shot several loads in the 22" and 32" .45-70 barrels for comparisons, the highlight of that was the 350gr Hornady RN at 2027fps w/52.5gr of H322 with a nice ½" 3-shot cloverleaf in the 32" BC barrel. The next step up at 53gr chrono'd 1850fps in the 22" Handi barrel.
Another comparison was 45gr of IMR4198 and the 350gr Speer FP @ 1932fps for the 22" and 2082fps for 45.5gr in the 32".
Tim
Shot the 225gr TSX with 57-61.5gr of RL15, the same load as MattParliament was shooting in his 22" Whelen, never really found an accurate load, 1½" was the best I got, but I also never got any pressure signs even at 2895fps, so I'll load up some more continuing on up in ½gr increments to see where it goes. Also may have to adjust COL, these loads were the recommended .050" off the lands.
Also shot several loads in the 22" and 32" .45-70 barrels for comparisons, the highlight of that was the 350gr Hornady RN at 2027fps w/52.5gr of H322 with a nice ½" 3-shot cloverleaf in the 32" BC barrel. The next step up at 53gr chrono'd 1850fps in the 22" Handi barrel.
Another comparison was 45gr of IMR4198 and the 350gr Speer FP @ 1932fps for the 22" and 2082fps for 45.5gr in the 32".
Tim
