?

Do you think the MKI pellets are slower because they are slightly wider?

You’re a wild man Chuck! Thanks for the entertaining entries. Shooting over 60 fpe with the SL and WC is impressive! What’s next? ?

Can you show the type of head/bit you used with the dremel.

I was watching an old copy of Das Boot where the submarine had to sit on the bottom of the ocean to avoid destroyers that were trying to sink it. As they settled to the bottom and went beyond their "crush depth" you could hear the sides of the submarine cracking and trying to adjust to the pressures of the outside water and then a bunch of the valves started leaking and they tried to replace the packing. 

Reading about your experiments with hitherto untried pressures reminded me of that movie. Methinks I would probably do the same thing if I had a fill hose long enough to fill the gun outside while I hid in a concrete bunker 10 feet underground. I would start flinching about the time I got within 30 feet of the gun. You must wear one of those demolition expert suits when plinking. LOL

... and what Dremel 4300 or? 

CHUCK,

I was wondering about the two sets of numbers you gave for the same pellet weight....in the footnote. Where you compared the MKI with the previous pellet of the same weight. I assumed they were the MKII.

The real question is were the rifles accurate at that FPS. over 900 feet fps I assumed to be some variations there. spiraling they call it.

Chuck it would be interesting to see the results of a hole slightly larger that the factory barrel port and pellet probe. I don't think you'd be able to chamber a 25 caliber pellet without shaving and damaging it. Unless.... you turn the gun upside down. haha. A lot of the larger ports are elongated to give you the same area without the risk of pellet damage. My hats off to you for trying it anyway. Mine is shooting MKI's now at 870-880 with great accuracy. The Wildcat and a fast moving 33.94gr is a great combination and the speed doesn't seem to hurt it a bit.
Jimmy

Wow Chuck! You just gave me an idea how I could blow my next $2k First,... I was under the impression that this kind of power in a WC mk1's smooth twist barrel would not properly. I thought the pellet would just blow past the four inches of rifling without giving the rifling a chance to spin the pellet. If this works here, what if I could rig a WC .22 (or 25) mk2 with this kind power, and put in a slug linger, with Neilson boat-tail slugs? I would have a reliable Huben for super long range. 

Chuck, are you going to try this set up with a wc mk2 slug liner?

Nice work Chuck, I remember when I first got 60+FPE from my Royale I had doubters and had to make a video to prove it haha. Keep up the good work my man!

What was the cost, order time, and how did you remove the barrel brass inlet.