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
View attachment 579561 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!
.