mobenzowner
Well-Known Member
- Joined
- Jan 5, 2016
- Messages
- 684
I tested out a few rounds (10 each) for effects of Full length Sizing, Bump Die and Collet Neck sizing as well as Body Die and Collet Neck sizing.
I used the Redding Competition Shell Holder set to set case Head Space.
I seated them with a Forster Bench Rest Seater Die.
I checked for bullet Run Out on each type with the 10 loads each. The results were:
Full Sized with Forster Die was the best with .0005" to .0015" with the majority .001" or below.
Body Size with Redding Die and Lee Collet Neck die ran .0005" to .0015" with the majority between .001" and .0015"
Lee Collet and Forster Shoulder Bump was .0015" to .005" the majority were .003" and down.
Not a lot of difference with full length and Body size Collet Neck size, but just Neck sizing does leave a bigger variance.
Good to know. Thanks for sharing your results..