This afternoon, the Diana 48 and I shot several different pellets off the bench at 30 yards. While we never quite equaled the groups that Hector Medina sent with the returned Diana 48, we got close with H&N FTT 4.52 TT's. Oh well, tomorrow's another day.
OTOH, I dearly love my new Beeman R9 back from John in PA. No twang, silky smooth and still right on target with my spinner spoons at 25yards. The gold safety button says, "look at me". Good John, John!
This afternoon, the Diana 48 and I shot several different pellets off the bench at 30 yards. While we never quite equaled the groups that Hector Medina sent with the returned Diana 48, we got close with H&N FTT 4.52 TT's. Oh well, tomorrow's another day.
OTOH, I dearly love my new Beeman R9 back from John in PA. No twang, silky smooth and still right on target with my spinner spoons at 25yards. The gold safety button says, "look at me". Good John, John!
I've been thinking about a magnum springer. Can you give me any more info about the Diana 48?
This afternoon, the Diana 48 and I shot several different pellets off the bench at 30 yards. While we never quite equaled the groups that Hector Medina sent with the returned Diana 48, we got close with H&N FTT 4.52 TT's. Oh well, tomorrow's another day.
OTOH, I dearly love my new Beeman R9 back from John in PA. No twang, silky smooth and still right on target with my spinner spoons at 25yards. The gold safety button says, "look at me". Good John, John!
I've been thinking about a magnum springer. Can you give me any more info about the Diana 48?
What do you need to know? I've had one since 1993 that I bought used from Beeman that was made in 1987. I replaced the spring with a vortec kit about a year and a half ago because I thought the spring was either broken or just plain sacked out. Turns out it was the altitude I was living at that made it seem so. It's a.177 cal that's very accurate if I do my part. I do wish I would have saved a little more money and bought a.22 version but that's my only regret. I still have the original 2X7 RWS scope on it that I bought in 1993 brand new. My only problem with it was the pin in the windage adj wore down and would walk changing the poi. I solved that problem by using blue loctite.This afternoon, the Diana 48 and I shot several different pellets off the bench at 30 yards. While we never quite equaled the groups that Hector Medina sent with the returned Diana 48, we got close with H&N FTT 4.52 TT's. Oh well, tomorrow's another day.
OTOH, I dearly love my new Beeman R9 back from John in PA. No twang, silky smooth and still right on target with my spinner spoons at 25yards. The gold safety button says, "look at me". Good John, John!
I've been thinking about a magnum springer. Can you give me any more info about the Diana 48?
Ron, Tom and Robert above have given you more Diana 48 experience than I have. My Diana 48 was tuned down for cocking ease and I like it.
Below is a 30 yard, 5 shot group made, from the bench, this afternoon with 4.53 JSB 8.44 Exacts. ❤
My Diana 48 was tuned down for cocking ease and I like it.
Greg
What was your D48 tuned to?
Incredible shooting with an incredible tune. Can short stroking and this type tuning help marksmanship and proficiency in magnum energy guns?
Incredible shooting with an incredible tune. Can short stroking and this type tuning help marksmanship and proficiency in magnum energy guns?
Hector
Can the D48 be tuned to be a smooth and accurate shooter at factory energy and cocking effort so as to be enjoyed by a much less knowledgeable air gunner?
Hector
Can the D48 be tuned to be a smooth and accurate shooter at factory energy and cocking effort so as to be enjoyed by a much less knowledgeable air gunner?
Hector did it to mine. Viva Hector!
Hector
Can the D48 be tuned to be a smooth and accurate shooter at factory energy and cocking effort so as to be enjoyed by a much less knowledgeable air gunner?
Hector did it to mine. Viva Hector!
Then I really need to get together with Hector!
Hector what would be the pellet drop at 100 yards with .22 pellets with your maxed out D48?It all depends on how you are accustomed to shooting, Yogi.
FWIW-For me anything that requires more than 3 1/2 hash marks holdover, I consider a lucky shot... ;D ;D ;D
-Y
| System Diana 48 SS / Sightron SII Target 36X42 Projectile JSB Exact 0.22 Inch 15.9 Grain BC 0.031 Profile GA MV 700 (Ft/s) ZR 75 (Yard) SH 1.75 (Inch) AmbT 15 (deg C) AmbP 29.92 ("Hg) Wind 7.5 M/h Full value Range POI POI Drift Cd Time Vel. Energy (Yard)(mrad)(clk)(mrad) (prj) (sec) (Ft/s) (FtLbf) 40 4.1 -57 1.3 0.288 0.19 599 12.67 45 3.6 -50 1.5 0.287 0.21 588 12.19 50 3.1 -43 1.7 0.286 0.24 577 11.73 55 2.5 -35 1.9 0.285 0.26 566 11.30 60 2.0 -27 2.1 0.285 0.29 555 10.88 65 1.3 -18 2.3 0.286 0.32 545 10.47 70 0.7 -9 2.5 0.286 0.35 534 10.08 75 0.0 0 2.7 0.287 0.37 524 9.70 80 -0.7 10 2.9 0.288 0.40 514 9.34 85 -1.4 20 3.1 0.288 0.43 505 8.99 90 -2.2 30 3.4 0.289 0.46 495 8.65 95 -3.0 41 3.6 0.289 0.49 486 8.32 100 -3.8 52 3.8 0.290 0.52 476 8.01 Sorry for the misalignment of some numbers, but inserting a graphic table takes too much time. So, for this hypothetical system, sighted in at 75 yards, you come DOWN 50 something clicks to shoot at 40, and you come UP about the same number of clicks to shoot at 100. The lowest Cd (Drag coefficient) is 0.285, the highest is 0.290, so we're keeping the Cd and therefore the BC to a reasonably constant value. Wind drift has been calculated for a 7.5 Mph wind at full value (3 or 9 O'Clock) Compensating wind with clicks is an interesting skill. At 100 yards, as long as there is enough DIFFERENCE in ground and air temperature you can read the drift by using the rolling waves of the mirage with a scope backed out about 1/3 of the distance to the target. Now, if I wanted to do this, I WOULD choose the SIGHTRON SII Target scope, which would mean that I would need to DOUBLE the clicks on the table (table is calculated at 1/4 MOA, scope has 1/8 MOA). So at 100 clicks EITHER way, scope is at about 1/2 of its full excursion from one end to the other (60 MOA's) Of course, MOST probable scenario is that a special scope base would need to be contrived/made, but, again, that is doable and it depends on the real values of the system in question. Which we will not know until we decide to test the concept. As to how to make the trajectory to 100 yards keep within the first two or three hash marks, the solution is simple: Use an 8X Crossbow scope with a 50 yard Zero! LOL! ¿Chicken-Egg; Anyone? Keep well and shoot straight! HM |
Well at least you did not say, "the solution is simple use a Duplex reticled scope," LOL.
I should have said, a maxed out D48 zeroed at 30 yards. I believe that +/- 3-5 yards, this is where most springer airgun scopes should be zeroed. A 75 yard zero might be realistic with a powerful PCP, but not any springers...
-Y
Hector,
Ps any chance that you can convince Sightron to make a dicated 16 X fixed power scope just for FT hunter Class? If they could make a superior scope in the $300-500 range, every FT hunter class shooter I know would buy one. 8)
Well what do you expect with a 9-45X56 FFP scope? What was the target weight, 39 oz? ;D
Anything over 20 oz on a 12fpe springer would be a deal killer for me......
One size DOES NOT fit all. :-\
-Y