Millennium Pumper Production - *The Beginning* - And The Lousy End

[CarsonRatSniper]

We have to mill the pump tubes either way - all we'd be doing is changing *where* we mill it.

I think the cost of the aluminum pump handle would be offset by Norm not having to chop his stocks in half...

I think its a go!

Mike

BTW - The valves are done...I'm heading to Jim's after I field test my Wicked Monster S/HP's. I will post pics as soon as I can.

[rsterne]

No idea which is more comfortable to pump, I wanted to be able to use Tim's billet linkage not have to make one from scratch.... Make sure you think about things like pinching your hands/clothing on the scope, etc., that will limit the angle you use for the side lever.... Also, the load is significant, if the diameter of the handle you push on is too small, be prepared for pain.... That is one thing I really liked about the Blaster stock the way I used it, was the large bearing area for your hand.... You are correct that the most comfortable position for your other hand is across the top of the scope between the rings, which I never found to be a problem.... I say do whatever you want, I just built the prototype.... Just think through the ergonomics.... The stock will still need work for the 16 gr. CO2 chamber ahead of the gauge....

Bob

[MEAT]

The gun will pull a touch to the right when shot off hand. Will there be a significant pump effort increase? I don't know about this choice. Good luck.

[CarsonRatSniper]

I looked at the Steroid linkage...the Blaster pump handle adds more length = more leverage = less pump effort.

I will entertain the side pumper later...Thanks Bob! Insight to concerns I hadn't considered.

No side pumper for now...

Mike

[Nomadic Pirate]

Hey guys, I'm *seriously* considering making the Millennium a Side Pumper.

One of the members here e mailed me pics of his Sharp Target Model pumper and I like it.

The pump arm is to the right of the barrel.
I would have Jim make a nice 7075 aluminum pump handle for the lever.

This would allow *full* stock support (no forearm cutting) and you'd have a better place to grab the rifle from (on the forearm) for pumping...avoiding having to grab the scope to pump it.
It would also allow for a larger variety of stocks to be used other than just the Blaster.

What do you think?
Bob? Any comments?

Mike

I think it's the best Idea you had in a while

Like that you can eventually make the rifle in tactical configuration too using Crosman pistol grip and AR15 collapsible stock, ...that would make a considerably lighter gun overall

[farmerjoe99]

I looked at the Steroid linkage...the Blaster pump handle adds more length = more leverage = less pump effort.

I will entertain the side pumper later...Thanks Bob! Insight to concerns I hadn't considered.

No side pumper for now...

Mike

I would stick with the under pump for now at least.
Looking forward to the pics
Joseph

[MRT949]

Now I See said the blind man . In my dreams .

[CarsonRatSniper]

I'll build *one* as a side pumper how I had in mind (still using Steroid lever & linkage) and compare the two...that we we'll all know if its worth pursuing.

Mike

[ToRmEnToR]

Side pump sounds great, but why would offhand shots pull?

[rsterne]

Center of Gravity not aligned with the barrel because of the weight of the pump handle to one side affecting the recoil.... This MAY increase hold sensitivity laterally....

Bob

[hutnicks]

No idea which is more comfortable to pump, I wanted to be able to use Tim's billet linkage not have to make one from scratch.... Make sure you think about things like pinching your hands/clothing on the scope, etc., that will limit the angle you use for the side lever.... Also, the load is significant, if the diameter of the handle you push on is too small, be prepared for pain.... That is one thing I really liked about the Blaster stock the way I used it, was the large bearing area for your hand.... You are correct that the most comfortable position for your other hand is across the top of the scope between the rings, which I never found to be a problem.... I say do whatever you want, I just built the prototype.... Just think through the ergonomics.... The stock will still need work for the 16 gr. CO2 chamber ahead of the gauge....

Bob

I actually wanted to inquire about that CO2 chamber. I thought those were just a zinc alloy. Will they hold up well over time with hpa usage?

Hmm. no multi quote here so. WRT the side cocker. Handle size would be a huge issue. How much mass does the billet ad to the side and could the stock be re balanced with inletting and wieghts added on the other side internally?

[jvanschoonhoven]

I would stick with the under lever design for several reasons. #1 Easier pumping #2 cleaner looking #3 lighter overall design. #4 less of a chance of smashing your fingers while pumping.  #5 bigger pump grip for more hand comfort. #6 less of a chance of debris/water getting inside the linkage area while hunting.

[Nomadic Pirate]

I don't know, I still like the Idea of the side pump better

Seems like the FX Independence is doing just fine with it

[rsterne]

hutnicks.... The 16 gr. CO2 cartridge I got was steel, rated at 250 bar (3625 psi) MSWP and 500 bar burst.... No idea if others are the same or not....

Bob

[hutnicks]

Thanks Bob. Do you happen to know the brand on that cartridge?

[rsterne]

No idea, I got it from a supplier in Coquitlam BC.... I asked for dimensions, they sent me a detailed drawing and that was on it.... over a year ago, though.... The neck is threaded 3/8"-24 NF....

Bob

[hutnicks]

Hmm. Sounds like an inflator cartridge of some sort.

[rsterne]

http://www.ebay.ca/itm/16-GRAM-CO2-THREADED-CHARGERS-1-box-30-units-/151313776387?pt=LH_DefaultDomain_2&hash=item233b00ff03

Bob

[CarsonRatSniper]

I've got valve bodies!
They still need exhaust ports and drilled/tapped 10-32.




These are the CO2 bulbs I got...they're steel.



Mike

[jvanschoonhoven]

Making progress!
Thats a cool looking micrometer it looks like you can set the size and then just ajust the other side to check parts and it shows you your tolerance?  Too bad we did not have one of those in the shop I worked at.. we were expected to just be able to read a normal one to check parts.... Some people had some issues with that and scrapped a lot of parts.