Redding - T7/Big Boss Primer Arm Assembly (Large) Tuner angle and shape of case

angle and shape of case and case length determines case holder size

45 caliber) to measure from the bullet ogive

Min Dimensions Gages are made to SAAMI specifications for Min Chamber

Works with most centre-fire cartridges from the 5

After sizing your cases

Redding - T7/Big Boss Primer Arm Assembly (Large) Tuner angle and shape of caseQuickly change primer cup & pin size by simply exchanging the entire primer arm assembly. Fits both the T 7 and Big Boss Presses. A reloader never knows when a part might break. Be prepared for anything with these high quality factory replacement parts that will have your Redding T 7 or Big Boss presses running like new.