Thought about this for 15 or 20 minutes and this is easy guys.
Download and print some of Centercut's EBR challenges.
https://www.airgunnation.com/topic/ebr-target-challenge/?referrer=1
Shoot it, at 100 yards (5 shots per group).
3 of the 5 groups need to have all 5 shots under 1 inch for your gun to shoot slugs @ moa the majority of the time, like this. (and that's a slim "majority")
In other words, three of your 5 shot groups need to have all shots slightly better than 9's.
Good luck.
(reality)
Or how about a "head to head" "reality" test. Do what you note, but compare pellet to slug. And maybe try them at 125 yards, or 150 yards, since that seems to be the trend these days. Just looking for a little "consistency" in any comparison. But I'm sure you could produce PELLET groups at that range showing your criteria met that I wouldn'tconsider calling less than trustworthy (I won't say lie).
I did exactly that, about 6 weeks ago. Only a little closer, it was either 101 or 103 yards (cant remember exactly). I wanted to know which shot more accurately out to 100 yards. I'm not anti-slug in any way, I just choose to shoot the most accurate projectile.
I shot a "card" (the above practice EBR target) with the 25.4gr MRDs.
Then shot a card with the 20.2gr NSAs.
Then shot a card with the 25.4gr MRDs.
Then shot a card with the 20.2gr NSAs.
I had sighter paper at 100 yards and a target at 50 yards to verify aim point and point of impact ("zero").
All four cards were in the 210-220 range. Conditions weren't great.
The slug need 0.8-0.9mil hold off. The pellet needed 0.3-0.4 mil hold off.
Now, in a windy situation, and shooting at 100 yards where the slugs supposedly have the better hand we would expect the 0.072 BC slug to not only shoot higher scores, but also need less hold off than the 0.049 BC pellet. (In previous experiments, when going from the 0.03 BC 18.13 to the 0.049 BC 25.39 there was a marked and obvious improvement in wind drift and ability to put it where I wanted. So the argument that the difference in BC from the 20.2 slugs to the 25.4 pellets isn't big enough doesn't hold water. )
These results are all very similar to the results seen from a gun that I don't own anymore. It was a test platform and as such I had three barrels that would fit, a .22 Poly that came out of a Daystate Red Wolf HP, an old stock .22 unchoked Korean barrel that would have fit a Career prior to machining, and a standard 12 land and groove LW barrel. LOTS and LOTS and LOTS of testing with that gun and those three barrels. Two of those three barrels are about as good as barrels can get (Korean and Daystate). Same results from all three, it'd do okay with slugs, but not better than a good high BC pellet like the 25.4gr MRD
In my experience and in this range of caliber and fpe (say under 100fpe and .30 and under), slugs shot from even a high quality airgun are simply not the "magic bullet" (pun intended) for long range accuracy that the hype wagon is pushing.
(Perhaps there are some real gains to be had in the big bore realm, but who wants to shoot a big bore in any sort of the volume we can enjoyably shoot these relatively small bore airguns. And perhaps if I had a nearly infinite # of rifling profiles to test, and a company willing to make them free of charge as long as I kept making YouTube videos to help sell their guns, maybe i could get to a point of accuracy that I find acceptable with slugs.)
Upvote 0