624 pumps 😱

Don.Chipmunk-slayer said:

I shouldn't have, but I did ...
... I did the math ...

When I get the 392 back from Tim, and after I sight it it to prevent shooting the chronograph, I'm going to test at least two different pellet weights.

The first will be the CPHP'S, to gauge the difference between stock and steroid. Since the CPHP'S are almost identical to the RWS SHP'S in weight, the chronograph readings should be identical for the two pellets.

Then I plan on testing the Crow Magnums, which are only 0.3 grains different than the Baracuda Hunter Extremes, the chronograph results should also be very close.

The plan is to take 3 shots at each pump level from 2 to 14 pumps and get an average. Even if I ONLY test 2 pellets, that's SIX-HUNDRED and TWENTY FOUR pumps!!!

My arms, shoulders and chest are sore just thinking about it.

Click to expand...

I did that once on a 500cc aluminum bottle, never again! That's why I have a compressor, 2 tanks, and my buddy also has 2 compressors and several tanks

Don.Chipmunk-slayer said:

I shouldn't have, but I did ...
... I did the math ...

When I get the 392 back from Tim, and after I sight it it to prevent shooting the chronograph, I'm going to test at least two different pellet weights.

The first will be the CPHP'S, to gauge the difference between stock and steroid. Since the CPHP'S are almost identical to the RWS SHP'S in weight, the chronograph readings should be identical for the two pellets.

Then I plan on testing the Crow Magnums, which are only 0.3 grains different than the Baracuda Hunter Extremes, the chronograph results should also be very close.

The plan is to take 3 shots at each pump level from 2 to 14 pumps and get an average. Even if I ONLY test 2 pellets, that's SIX-HUNDRED and TWENTY FOUR pumps!!!

My arms, shoulders and chest are sore just thinking about it.

Click to expand...

14 pumps ? YIKES!! Maybe you should think of the money you can spend (with each pump) on pellets instead of going to the gym ?

Don.Chipmunk-slayer said:

I shouldn't have, but I did ...
... I did the math ...

When I get the 392 back from Tim, and after I sight it it to prevent shooting the chronograph, I'm going to test at least two different pellet weights.

The first will be the CPHP'S, to gauge the difference between stock and steroid. Since the CPHP'S are almost identical to the RWS SHP'S in weight, the chronograph readings should be identical for the two pellets.

Then I plan on testing the Crow Magnums, which are only 0.3 grains different than the Baracuda Hunter Extremes, the chronograph results should also be very close.

The plan is to take 3 shots at each pump level from 2 to 14 pumps and get an average. Even if I ONLY test 2 pellets, that's SIX-HUNDRED and TWENTY FOUR pumps!!!

My arms, shoulders and chest are sore just thinking about it.

Click to expand...

I am interested in low count steroid pumps FPE/FPS or does it not work that way ? i know nothing about this type of gun . Never mind coffee just kicked in and i answered my own ??

Hate to bust your bubble Don, but you won't do that. That being the case, I'll save you a lot of wasted effort(s).

1)- "chronograph readings should be identical for the two pellets." Nope.
2)- "chronograph results should also be very close." Maybe.
3)- "The plan is to take 3 shots at each pump level from 2 to 14 pumps and get an average." That MIGHT last through ONE pellet variety.
4)- But I doubt it.
5)- "My arms, shoulders and chest are sore just thinking about it." Unless you're a competitive body-builder, 'sore' is a supreme understatement.
6)- If you were able to complete the amount of testing you describe, you will make lasting memories.
7)- Virtue of lasting injuries.
8)- Now the good news. Limit your testing to JSB domed pellets in 14.3, 15.9 or 18.1 grains and you'll achieve the best accuracy that gun is capable of in whatever weight(s) you decide suits your purposes best.

You're Welcome,
Ron



BTW, that fourth book (now out of print) included testing of 350 airguns of all kinds, including multiple Steroid pumpers. My testing is now over 500 airguns.

To quote one of my favorite songs, by one of my favorite bands, "I know a little 'bout love; and Baby I can guess the rest!" Suffice to say I love airguns!

I also know a little 'bout love; but Baby that advice ain't free!

.

I think I maxed out at 18 pumps on my steroid build 1377 with longer barrel. My velocity peaked at 18 pumps. Check to see where your velocity maxs out with pump number. Slow steady pumps will help with consistency and reduce variations in speed.

The Steroids produce more power at every pump stroke than stock pumpers. However, and the reason my post above is so confident in its predictions, EACH pump stroke is comparably more difficult than a stock gun. So assuming you (conservatively) imagine every stroke is 15% more difficult, you're not imagining hundreds of pump stokes 15% more difficult.

BTW, in most of my testing 14.3 JSBs produce more velocity and accuracy than Crosman 14.3s.

The image below is the last page of a chapter titled Benjamin PUMP! in my second book (copyright 2001), the chapter about my testing of a Steroid Benjamin 342, That chapter originally appeared in American Airgujnnner magazine. That rifle averaged 3/4" groups at 25 yards with peep sights. The reason the Crosmans are posted as 14.5 grains is because that's what they weighed on my reloading scales. Notice the last phrase in the chapter.



.

.

You might think about having Tim add an adaptor for a moderator too. At fourteen pumps they're noticeably louder than a stock gun.

JaceSpace1369 said:

I did that once on a 500cc aluminum bottle, never again! That's why I have a compressor, 2 tanks, and my buddy also has 2 compressors and several tanks

Click to expand...

i pumped the huben k1 up to 5k once. lol not the business.. i literally weighed just enough to get the pump down just to get up to 5k haha

Don.Chipmunk-slayer said:

I am also having him do the pump arm modification, which he says reduces the effort (of the steroid) by 25%.

Click to expand...

That modification might have come about since Tim and my parting of ways. To translate that- hopefully it's not sales hype.

.

Don.Chipmunk-slayer said:

In mathematical THEORY, a longer lever means less effort, but I sucked at math in school, so ...

Click to expand...

Interestingly enough, and that's the only reason I post this, although I HATED Math, my college entry exam Math score was my highest. I can only assume I ingested Math in REM sleep.

My next higher score was in Science, despite the fact the only science that interested me was Physics. That's because Physics is about things I can see, touch, feel and use; and therefore, relate to and (somewhat) understand. I consider Physics Reality; as opposed to sciences that relate to invisible things.

Point is I can assure you with some level of confidence that longer levers = greater leverAGE = less effort.

However, given my aversion to Math, I'll not delve any deeper into that equation.

.