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Ghost BRK Ghost Review
- Thread starter Franklink
- Start date
- Latest activity Latest activity:
- Replies 289
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- Original poster
- #162
Still playing with the .20 Ghost ...
Credit to @Motorhead, but a couple years ago I did this experiment: .20 JSB Exact Jumbo Heavies? (Resized from .22)
Essentially, a .22/18.13gr JSB sized down to .20 to make a .20/18.13gr pellet.
Here's what they look like....left is a unmolested JSB .20/15.89 and right is a sized down .22/18.13 to .20/18.13...
Yes it makes a rather large bearing surface. My process is also giving it a small meplat.
When I did this test with a different gun/barrel a few years ago the fastest I pushed them was 880ish, which produced a BC of 0.042....in a perfect world BC wouldn't change with speed, but in reality, it often does. So I've wondered what faster would do for accuracy and the BC for awhile now.....
So I made up a fresh batch of .20/18.13 and just ran some over the chrono in the garage, from the Ghost. Was hoping for more like 915-920fps but I took 8 shots and they were 894-902 (max hammer spring and same 128reg pressure I've been working with for so long). Just a shade under 33fpe.
They're at least a bit faster than the previous test with different gun. I'm sure I could get more speed with other changes but don't want to fiddle with the tune that much. So I'm going to try them out of the Ghost @ average of 898-900 to see how accurate they are, and hopefully capture a downrange speed for a bc on them at this speed.
Fun stuff.
Credit to @Motorhead, but a couple years ago I did this experiment: .20 JSB Exact Jumbo Heavies? (Resized from .22)
Essentially, a .22/18.13gr JSB sized down to .20 to make a .20/18.13gr pellet.
Here's what they look like....left is a unmolested JSB .20/15.89 and right is a sized down .22/18.13 to .20/18.13...
Yes it makes a rather large bearing surface. My process is also giving it a small meplat.
When I did this test with a different gun/barrel a few years ago the fastest I pushed them was 880ish, which produced a BC of 0.042....in a perfect world BC wouldn't change with speed, but in reality, it often does. So I've wondered what faster would do for accuracy and the BC for awhile now.....
So I made up a fresh batch of .20/18.13 and just ran some over the chrono in the garage, from the Ghost. Was hoping for more like 915-920fps but I took 8 shots and they were 894-902 (max hammer spring and same 128reg pressure I've been working with for so long). Just a shade under 33fpe.
They're at least a bit faster than the previous test with different gun. I'm sure I could get more speed with other changes but don't want to fiddle with the tune that much. So I'm going to try them out of the Ghost @ average of 898-900 to see how accurate they are, and hopefully capture a downrange speed for a bc on them at this speed.
Fun stuff.
Learned a new word…so you push them through skirt first? And it’s the pressure on the head that flattens it? can you resize them without making the meplat? Make the pusher out of a hard wood dowel with the end contoured to match the pellet head?
- Original poster
- #164
They go through the sizers head first. The "pusher" is touching the base of the skirt, up inside the skirt hollow. The meplat is happening when they contact the adjustable depth stop that controls the diameter. I've been told some guys can use the TR Robb sizers without making the meplat but when I try to do that I get inconsistent diameters.
The meplat is interesting to me b/c @rsterne has shared some tidbits from his testing of pellets shot from the NOE molds he designs. Those molds give the pellets a meplat where the sprue plat cuts off the excess poured lead. Intriguing b/c in his testing the pellets with a small flat on the dome have a slightly better BC than the "same" pellets without a meplat. "Same" being the very similar pellets made by JSB.
- Original poster
- #166
Working under the (probably safe) assumption that whatever commercial pellets we're shooting are a combination of: performance, production costs, and physics....there are multiple places I can find a reason why they're not throwing a meplat in there.
Perhaps performance suffers in certain situations (long range? Or low power? Or high power?
The meplat may not jive with their manufacturing process or maybe they're just more expensive to make.
Or maybe the slight difference in BC isnt even enough to be worth the hassle. The two big players have differing opinions on the importance of BC, for example JSB pellets of a similar weight will nearly always have a better BC than its H&N counterparts.
- Original poster
- #167
.20/25.4grain
Wasn't my idea to size .22s down to .20...credit to @Motorhead for the concept Recently revisited the idea that I originally investigated here: .20 JSB Exact Jumbo Heavies? (Resized from .22) But this recent adventure was with the .22/25.4grain Monster Redesigns. So, yes, a .20/25.4...
community.hardairmagazine.com
- Original poster
- #168
Finally had a chance to revisit the 170+ slugs-on-paper shooting experiment.
Moved the cardboard up the fence a bit, shot from my porch instead of my 2nd story window....distance shook out to a lasered 171 yards this time.
View through the scope prior to shooting...
View through the scope after shooting. The holes are just barely visible.
Box of NSA and a ruler for size reference after I walked out to retrieve the carboard....
I tried to start at the top round aim point (black marker) but was hitting about a mil low. Seems to have been the ever so slight headwind I was shooting into. Couldn't have been more than a couple mph. So my first shot hit far to the right, off the cardboard but in that woven wire fence. There's some shrapnel damage from that first shot, off the to the right of that second down from the top marker circle. This was after much fiddling with the scope in the last 2 weeks. As discussed elsewhere, right drift is still there. Seems to be spin drift since it's still doing it after realigning the scope.
The aim points were used in the numbered order. 1, 2, 3, 4.
Starting bottle pressure was 250bar, ending was 180. Reg pressure of only 128bar. Which really shows the beauty of a long ranger at only 32fpe....shot count. I'd guess another 25-30 shots before I got down to reg pressure. So 70ish shots from a single fill. And these are long bomber shots with pretty decent accuracy, at least critter popping accuracy. There are other highly desirable aspects of "the long poke" with low power, mainly the docile nature of low fpe. But also just the challenge of doing more with less-which is a big part of why airguns trip my trigger.
I'm a broken record at this point, but these .20/18.9grain NSA slugs are just crazy good.
Anyway, very enjoyable 30-40 minute session yesterday evening.
Another view of the fun....
And some perspective items added. That's a 100 yard MOA coin on the third group down. The top and bottom have a .177/500ct JSB tin centering the groups.
Moved the cardboard up the fence a bit, shot from my porch instead of my 2nd story window....distance shook out to a lasered 171 yards this time.
View through the scope prior to shooting...
View through the scope after shooting. The holes are just barely visible.
Box of NSA and a ruler for size reference after I walked out to retrieve the carboard....
I tried to start at the top round aim point (black marker) but was hitting about a mil low. Seems to have been the ever so slight headwind I was shooting into. Couldn't have been more than a couple mph. So my first shot hit far to the right, off the cardboard but in that woven wire fence. There's some shrapnel damage from that first shot, off the to the right of that second down from the top marker circle. This was after much fiddling with the scope in the last 2 weeks. As discussed elsewhere, right drift is still there. Seems to be spin drift since it's still doing it after realigning the scope.
The aim points were used in the numbered order. 1, 2, 3, 4.
- Aimpoint 1 (second marker circle down from the top) has 14 holes, mostly to the left of the aim point. This was after giving it some clicks to the left after the very first shot missed the cardboard. All 14 of those shots were same aim point, no click adjustments. I was just wanting to get a feel for any drift or wind at this point.
- Aimpoint 2 (highest marker circle) contains 10 shots. This was after adjusting the scope a bit. I had adjusted a bit too high, and a bit too much to the right on this one.
- Aimpoint 3 (marker circle that is third from top) contains the best group. 5 shots into 1.75." at 171 yards that is 0.98MOA. This group was overcorrected to the left after aimpoint 2 was too far to the right.
- Aimpoint 4 (lowest marker circle) is about the best centered group. 10 shots into 6" for 3.35MOA, or 8 shots into 2.876" for 1.6MOA.
Starting bottle pressure was 250bar, ending was 180. Reg pressure of only 128bar. Which really shows the beauty of a long ranger at only 32fpe....shot count. I'd guess another 25-30 shots before I got down to reg pressure. So 70ish shots from a single fill. And these are long bomber shots with pretty decent accuracy, at least critter popping accuracy. There are other highly desirable aspects of "the long poke" with low power, mainly the docile nature of low fpe. But also just the challenge of doing more with less-which is a big part of why airguns trip my trigger.
I'm a broken record at this point, but these .20/18.9grain NSA slugs are just crazy good.
Anyway, very enjoyable 30-40 minute session yesterday evening.
Another view of the fun....
And some perspective items added. That's a 100 yard MOA coin on the third group down. The top and bottom have a .177/500ct JSB tin centering the groups.
That looks like great shooting to me!!!Finally had a chance to revisit the 170+ slugs-on-paper shooting experiment.
Moved the cardboard up the fence a bit, shot from my porch instead of my 2nd story window....distance shook out to a lasered 171 yards this time.
View through the scope prior to shooting...
View through the scope after shooting. The holes are just barely visible.
Box of NSA and a ruler for size reference after I walked out to retrieve the carboard....
I tried to start at the top round aim point (black marker) but was hitting about a mil low. Seems to have been the ever so slight headwind I was shooting into. Couldn't have been more than a couple mph. So my first shot hit far to the right, off the cardboard but in that woven wire fence. There's some shrapnel damage from that first shot, off the to the right of that second down from the top marker circle. This was after much fiddling with the scope in the last 2 weeks. As discussed elsewhere, right drift is still there. Seems to be spin drift since it's still doing it after realigning the scope.
The aim points were used in the numbered order. 1, 2, 3, 4.
39/40 consecutive shots are shown here. I only did this experiment one time yesterday evening. This isn't the best of 5 attempts, but rather shows it all.
- Aimpoint 1 (second marker circle down from the top) has 14 holes, mostly to the left of the aim point. This was after giving it some clicks to the left after the very first shot missed the cardboard. All 14 of those shots were same aim point, no click adjustments. I was just wanting to get a feel for any drift or wind at this point.
- Aimpoint 2 (highest marker circle) contains 10 shots. This was after adjusting the scope a bit. I had adjusted a bit too high, and a bit too much to the right on this one.
- Aimpoint 3 (marker circle that is third from top) contains the best group. 5 shots into 1.75." at 171 yards that is 0.98MOA. This group was overcorrected to the left after aimpoint 2 was too far to the right.
- Aimpoint 4 (lowest marker circle) is about the best centered group. 10 shots into 6" for 3.35MOA, or 8 shots into 2.876" for 1.6MOA.
Starting bottle pressure was 250bar, ending was 180. Reg pressure of only 128bar. Which really shows the beauty of a long ranger at only 32fpe....shot count. I'd guess another 25-30 shots before I got down to reg pressure. So 70ish shots from a single fill. And these are long bomber shots with pretty decent accuracy, at least critter popping accuracy. There are other highly desirable aspects of "the long poke" with low power, mainly the docile nature of low fpe. But also just the challenge of doing more with less-which is a big part of why airguns trip my trigger.
I'm a broken record at this point, but these .20/18.9grain NSA slugs are just crazy good.
Anyway, very enjoyable 30-40 minute session yesterday evening.
Another view of the fun....
And some perspective items added. That's a 100 yard MOA coin on the third group down. The top and bottom have a .177/500ct JSB tin centering the groups.
- Original poster
- #171
Lol the last little bit of it that fell probably about a week ago. Hasn't warmed up much here in the high country. Supposed to be 54 tomorrow and I think that'll be the first time it's broken 50 in awhile!
More snow coming early next week.
- Original poster
- #173
It is phenomenal.
Danman
Well-known member
Hey Franklink excellent documentation on your shooting as usual and keeping it real, i have 2 questions. What is the mag on that scope on your Ghost, seems pretty high! Also did you notice much difference from shooting ground level vs your second floor? (poi, spin drift, wind effects, etc) I always wonder about that.....thanks. You probably sound like a broken record on singing the praises (to yourself) of the .20 slugs but keep it coming! I don't believe .22 in pellets can touch your set up! Some day them .22 slug barrels will show up and then we'll see...Finally had a chance to revisit the 170+ slugs-on-paper shooting experiment.
Moved the cardboard up the fence a bit, shot from my porch instead of my 2nd story window....distance shook out to a lasered 171 yards this time.
View through the scope prior to shooting...
View through the scope after shooting. The holes are just barely visible.
Box of NSA and a ruler for size reference after I walked out to retrieve the carboard....
I tried to start at the top round aim point (black marker) but was hitting about a mil low. Seems to have been the ever so slight headwind I was shooting into. Couldn't have been more than a couple mph. So my first shot hit far to the right, off the cardboard but in that woven wire fence. There's some shrapnel damage from that first shot, off the to the right of that second down from the top marker circle. This was after much fiddling with the scope in the last 2 weeks. As discussed elsewhere, right drift is still there. Seems to be spin drift since it's still doing it after realigning the scope.
The aim points were used in the numbered order. 1, 2, 3, 4.
39/40 consecutive shots are shown here. I only did this experiment one time yesterday evening. This isn't the best of 5 attempts, but rather shows it all.
- Aimpoint 1 (second marker circle down from the top) has 14 holes, mostly to the left of the aim point. This was after giving it some clicks to the left after the very first shot missed the cardboard. All 14 of those shots were same aim point, no click adjustments. I was just wanting to get a feel for any drift or wind at this point.
- Aimpoint 2 (highest marker circle) contains 10 shots. This was after adjusting the scope a bit. I had adjusted a bit too high, and a bit too much to the right on this one.
- Aimpoint 3 (marker circle that is third from top) contains the best group. 5 shots into 1.75." at 171 yards that is 0.98MOA. This group was overcorrected to the left after aimpoint 2 was too far to the right.
- Aimpoint 4 (lowest marker circle) is about the best centered group. 10 shots into 6" for 3.35MOA, or 8 shots into 2.876" for 1.6MOA.
Starting bottle pressure was 250bar, ending was 180. Reg pressure of only 128bar. Which really shows the beauty of a long ranger at only 32fpe....shot count. I'd guess another 25-30 shots before I got down to reg pressure. So 70ish shots from a single fill. And these are long bomber shots with pretty decent accuracy, at least critter popping accuracy. There are other highly desirable aspects of "the long poke" with low power, mainly the docile nature of low fpe. But also just the challenge of doing more with less-which is a big part of why airguns trip my trigger.
I'm a broken record at this point, but these .20/18.9grain NSA slugs are just crazy good.
Anyway, very enjoyable 30-40 minute session yesterday evening.
Another view of the fun....
And some perspective items added. That's a 100 yard MOA coin on the third group down. The top and bottom have a .177/500ct JSB tin centering the groups.
- Original poster
- #175
Hey Franklink excellent documentation on your shooting as usual and keeping it real, i have 2 questions. What is the mag on that scope on your Ghost, seems pretty high! Also did you notice much difference from shooting ground level vs your second floor? (poi, spin drift, wind effects, etc) I always wonder about that.....thanks. You probably sound like a broken record on singing the praises (to yourself) of the .20 slugs but keep it coming! I don't believe .22 in pellets can touch your set up! Some day them .22 slug barrels will show up and then we'll see...
The scope is an Athlon Midas Tac 6-24x50. Best scope money can buy, in the $500-600 price range.
In the scope images a few posts above Im pretty sure I'm at 24x on the most zoomed in image, and probably 16x in the pre shoot image. I could see the .20 holes with the scope and I have an eye disease where vision isn't the greatest. It's more clear in real life than the photos properly illustrate. The rangefinder is just a fixed 6x. Could NOT see the .20 holes with the rangefinder, lol.
Not necessarily for these sessions cuz I picked minimal wind conditions, but generally the wind seems harder to judge when I shoot from upstairs, compared to shooting from ground level. Bottom and top floors have 10 foot ceilings on this north wall of the house, so that second floor window is up off the ground quite a ways. I don't have any way to prove it but seems to me the further from the ground, the greater the wind speeds?
Danman
Well-known member
I would think that wind would be worse for shooting the higher you go for sure! (I work on manlifts all day
) Ok good to know on that scope... pictures are rarely as good as the real thing but still it is pretty clear! I hope to get a 16x scope down the road for my future ghost. I hunt and plink more than anything else and wouldn't go past 100y likely. Nice job sir!
) Ok good to know on that scope... pictures are rarely as good as the real thing but still it is pretty clear! I hope to get a 16x scope down the road for my future ghost. I hunt and plink more than anything else and wouldn't go past 100y likely. Nice job sir!
ewo Athlon Midas Tacs here and they far out shines any of the others i have.
going to be adding a thrird soon.
Danman
Well-known member
Good to know, why try something different if what you have is the bomb! I'll have to research those. I've been looking at the MTC 16x and the Helix 16x as well. Might make a thread on that some time....thanks.
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