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BCM45
03-18-2012, 10:06 PM
Does this affect accuracy?

http://i42.tinypic.com/50ljl.jpg

Wolfer
03-18-2012, 10:32 PM
I M O no, any little defect on the edge of the base is cause to go back in the pot. I quite often cut my sprue a fuzz too soon also. Shot hundreds just like that one, no problems.

beagle
03-18-2012, 10:35 PM
I prefer a smooth cut but it will shoot all right./beagle

BCM45
03-18-2012, 10:43 PM
So then this would make no difference in the accuracy? Thanks

runfiverun
03-18-2012, 10:48 PM
not really.
i try to get the mold open as soon as possible,without tearing if possible if i get a little no big deal.
the only ones i really sweat a torn base on are my 22's.
i'll double cut those bases on the hardened boolit.

405
03-18-2012, 11:21 PM
If I see what I think I see in the photo- no. Since the sprue "lump" is small and centered it won't have much if any affect on the balance of a spinning bullet. If the lump (excess material) or tear (missing material) were on the outside of the base then maybe a little- depending on size. Also, is that bullet a gas check type? Just curious- since it looks like drive bands larger diameter than base (shank).

geargnasher
03-18-2012, 11:38 PM
All of mine look that way and shoot very, very well. As long as there isn't a huge crater of missing metal (enough to measure with common powder scales) I've never seen it to be an issue. In fact, it's less of an issue than a "bump", especially when seating gas checks. BTW I cut all my sprues by hand when the sprue is firm, but not totally frozen so I don't have to beat the sprue plate to cut the sprue.

Gear

220swiftfn
03-18-2012, 11:41 PM
Not unless the reason that boolit isn't rolling off onto the floor is because it's flat on the side....... That might cause a "flier"......[smilie=l:

Looks fine to me......


Dan

303Guy
03-19-2012, 01:41 AM
Pretty neat photo!

Multigunner
03-19-2012, 02:15 AM
I used to buy pre cast .38 boolits (.358 diameter) already sized and lubed in bulk.
Every one of these had a base that looked just like the photo, but they all went into a single ragged hole not much larger than the diameter of the bullet at 50 feet, and very nearly the same performance at 25 yards.
This was from a 6 inch Colt barrel.

The center of the base is not a critical area. Imperfections near the edge might cause some wobble, but otherwise only a gap that let gas slip past would be anything to worry about.

I do consider nose pour molds to be theoretically superior.
Extensive testing of deliberately mutilated bullets has proven that imperfections of the nose of a bullet has very little effect on accuracy, while imperfections on the edge of the base can throw shots wild.

stubshaft
03-19-2012, 03:07 AM
Not to any appreciable degree.

Lloyd Smale
03-19-2012, 05:14 AM
No. At least not unless you measure your handgun groups with a dial indicator and even then i doubt youd notice.

soldierbilly1
03-19-2012, 08:45 AM
BCM:
I assume you are talking about the center, true?
Or, is this a flat base that had not filled out? or a bevel base?
(or a flat base with an optical distortion due to the lens on your camera?)
billy boy

BCM45
03-19-2012, 11:45 AM
Thanks for the input I was afraid that it would cause issues.