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edgalang Friday, May 25th, 2007
Period of
Product Use:
6 months8 of 11 people found this review helpful.

2 years
Products Used:
SP Firebolt
Marker Setup: SP ION (2006)
SP Max-Flo Mirco (4500)
SP 68/4500 CF tank
SP 14' Progressive Barrel (2006)
SP QEV 360
SP Q-Lock

NDZ Skeleton Bolt (2-Ring)
NDZ Aluminum Trigger
NDZ Snatch Grip

Lapco MilSim Body (Dust Black Aluminum)
Lapco Autospirit (14/.687)

Evil Detonator Regulator
Killa Magnetic Detents
Richochet 2KX Loader (w/revy impeller)
Strengths: 2x O-Ring Tail Design
Teflon Coated
Weaknesses: After (7 cases)...still looking good.
Problem only applies to those that don't lube.
Review: I recently upgraded from a SP Firebolt to a NDZ Skeleton 2-ring bolt and just realized how the double-O ring design possibly fixes the search for the minimum dwell setting...since in theory, dwell becomes irrelevant once the bolt is in the closed position (of course assuming #1 you had a long enough dwell setting to even get the bolt to close and #2 none of the o-rings leak).

In the past, I've constantly attempted to achieve the minimal dwell settings to get the most efficiency, but at the same time was concerned about the drawbacks like inconsistency. I currently can cycle @ 6 clicks after a cleaning (stock board), but to be conservative, I keep my dwell @ 13 clicks to keep my marker dependable.

(This is because I found out that as my marker gets used throughout the day, the bolt slowly de-greases itself and with the addition of dirt/debris that the breech collects, adds additional friction...forcing me to raise the dwell if set to the minimum cycle.)

So...assuming all the perfect conditions are met...
It is possible that an ION with a bolt consisting of a double o-ring tail design, can have dwell settings of an unlimited value that is above the minimum value that is allowed the bolt to fully cycle.

Since in theory, the purpose of the 2nd o-ring is to seal the dump chamber, which in essence is like automatically setting the minimum dwell for you. With that said...I could essentially set my dwell to 10, 20, 30 or even 40 and none of it would matter, other than possibly increasing the consistency of the marker with the higher values.

I'll update this post as necessary if/when the bolt ever breaks. However until then, I'll give this bolt a 9.

My dwell/recharge is now split in the middle 24/24 (for those of you who follow the 48 rule)
Conclusion: Why would anyone NOT want some form of a 2-ring tail bolt design in their ION?

Since it does...
#1 Allow you to raise your dwell settings higher than normal to allow consistent shots even through the day as the breech becomes less and less lubricated.
#2 Eliminates the constant worry about minimal dwell settings in regards to efficiency.

#3 Reduces recoil the most due to having the least amount of mass (regarding single part setup) in the market.
#4 Reduces complexity compared to the other multi-part bolts out there. (remember the rule...less parts = less parts to break/ special tophats & plugs)
9 out of 10Last edited on Tuesday, August 14th, 2007 at 8:21 am PST

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