I was just over at Cabela's Fort Worth over lunch and they had some Hornady super performance 458 WM on the shelf. I bought a box and am anxious to test it across the chrono; One problem, my smith is adding a little weight to my 458 and it is not in my hands.
I hope they did not just re package the HM offering as the seal on the box states the old HM performance (2260 FPS) where as the Super performance states 2140 FPS in the catalog.
The old HM averaged 2080 across my sky screens out of a 24" barrel.
I am making a call to my gunsmith and telling him to get that mercury tube a Pachymer decelerator installed. I have testing to do!
This stuff was $77.00 + tax a box.

I am coming around to the school of thought that Mercury is just expensive weight. (not my words another on AR). I added my own weight. I drilled a hole and put a weight in the stock. FWIW, I cut a short length of lawn chair tubing and filled it with molten lead. Used a screw at an angle to secure the weight from moving around in the stock. I was sweating bullets while I drilled that hole.

I am curious about the recoil pad upgrade. Does that have to be fitted? It sounded like it might be a simple home screw on for the Ruger No1. But I dont have a definitive answer.

Pachymer decleator works well on my other rifle and have used a 416 with one on it and it was good there to

ddrhook, can those Pachymer be installed at home, or do they need fitting for the CZ550?

i do it myself BUT i do have a belt sander and other tools to do it with. if you have tools just place the pad on the stock mark it. Take pad to sander. sand to fit no problem

Sounds a little tricky, but I do have a belt sander. I had the stupid idea they were fitted while on the gun. Marking with a scribe and removing - thats the trick.

I have had to clean up a few stocks that guys tried to fit pads to while on the guns

ya just take it nice and slow don't get in a hurry check the fit often

I grind muine on the gun,freehand;but I have had the benefit of some very skillful tutors,and LOTS of practice....
As to the use of a Pach.Decelerator Pad with a stock insert;whether a commercial mercury or other mechanical device( Edwards,Dead Mule etc.)
The hollow waffle back construction of the Decelerator Pad leaves NO ! solid rear backing surface for the device to encounter on rearward shift under heavy recoil. Independent anchoring or some screw /pin method is necessary or the device will move into the open area of the pad.
If one uses the Kick Ezz or Pach. 325 vented pad a SOLID back is presented to the rearward motion of the recoil "reducer"

Paul

quote:

Originally posted by ddrhook:
ya just take it nice and slow don't get in a hurry check the fit often

And decide if you want the toe to match the stock line before grinding it square.