6.8 Remington SPC in 14" Contender
Brass arrived late yesterday for my S/S 6.8 Remington SPC 14" Contender, iron sights. Went up in the back and shot first two test loads today.
New Hornady Brass. 27.0 Min. charge H335, CCI 400 small rifle primer, 110 V Max, 2.302 oal. No pressure sign. But muzzle blast and sign of not completely burning powder. cull that one.
New Hornady Brass. 22.0 Grain Min. charge IMR4198, CCI 400 small rifle primer, 110 V Max, 2.302 oal. No pressure sign. Complete powder burn.
New Hornady Brass. 23.0 Grain IMR4198, CCI400 small rifle primer, 110 V Max, 2.302 oal. No presure sign. Complete powder burn.
Going to load and test last load for accuracy. Not looking for increased velocity with the first brass fire forming shot. Just making brass to fit chamber.
There was some talk of miss fires in the 6.8 Remington Contenders. A good friend of mine Bill Prator, barrel maker, head barrel maker for P. O. Ackley and gunsmith told me in the 60's. First round, the case fire forming round, in factory or wildcat cartridges should be min. charge with bullet seated at the barrel lands. Not forced into the lands with the action closing but by hand/finger loaded. This will get you a true fire formed case that fits the chamber. (Since the 6.8 Remington like other cartridges which are rimless headspace on the case it is possible for the case to be pushed into the chamber if the case is not supported for fire forming).
Next sizing is only 3/4 of the case neck. Brass/case is now perfect fit for your chamber. I rarely full length size a case. Each gun/chamber has its own supply of fodder. Then if a person wants to seat bullet deeper to load a heavier load go ahead as pressures will be less. But work up in small increments like everyone counts as it does.