wildcard6 wrote:I've been working for a few months on a new shoot that will combine rimfire benchrest shooting and long range metallic silhouette shooting. Here's a link to the Youtube video I made of my early work on it. There are still a few hurdles to jump before it's accepted at my club, but it's getting close. I never seem to get tired of knocking down steel targets, but the longer the range, the bigger the rush when you do!
https://www.youtube.com/watch?v=QOKgfLnLimg
The original concept was for just 300-yard shooting, but I've come up with a multi-range format that will have steel targets at 100m, 200m and 300 yds. Surprisingly, it's not that hard to get a aiming solution at 300yds with either HV or SV ammo, although the holdover is less with HV, which also comes in handy for hitting power. In the video, I thought I missed five times in the first run, but it was a freshly painted target and there are two hits in the final still shot. Anybody interested should contact SSAA Para range and ask for Pat.
in2anity wrote:It’s unclear as to whether this discipline is shot offhand or not? I think it’ll appeal to a lot more shooters if it’s shot from offhand... otherwise it’s just another “race to the top” money=accuracy=good scores. Also I have my doubts about the capabilities of the 22 on a gusty day - this is problem enough already for the rams at 100m... as we all know the 22 is far from a 300m caliber...
bladeracer wrote:in2anity wrote:It’s unclear as to whether this discipline is shot offhand or not? I think it’ll appeal to a lot more shooters if it’s shot from offhand... otherwise it’s just another “race to the top” money=accuracy=good scores. Also I have my doubts about the capabilities of the 22 on a gusty day - this is problem enough already for the rams at 100m... as we all know the 22 is far from a 300m caliber...
Yes, wind would be a significant problem, although roughly on par with a 300gn .45-70 bullet so not a complete waste.
in2anity wrote:bladeracer wrote:Yes, wind would be a significant problem, although roughly on par with a 300gn .45-70 bullet so not a complete waste.
I’m not sure I understand your parallel Blade? Are you comparing the 300gn to the 40gn 22lr?
bladeracer wrote:in2anity wrote:bladeracer wrote:Yes, wind would be a significant problem, although roughly on par with a 300gn .45-70 bullet so not a complete waste.
I’m not sure I understand your parallel Blade? Are you comparing the 300gn to the 40gn 22lr?
Yes, I ran the numbers for a 115BC 40gn at 1080fps and a 190BC 300gn at 2000fps. The .458" bullet has four-times the frontal area of the .223" bullet, and dumps 900fps by 300yds compared to the .22LR only dropping 365fps.
At 300yds in a 10mph wind the 40gn is deflected about 12.5MoA, and the 300gn about 10MoA. Drop some velocity or BC with a flat-nosed bullet and the wind deflection would be even closer, but I'm sure there are .22LR bullets that can improve the ballistics as well. I think they're within the ballpark for practicing. Even the trajectory is within 200mm or so at midrange.
in2anity wrote:bladeracer wrote:in2anity wrote:bladeracer wrote:Yes, wind would be a significant problem, although roughly on par with a 300gn .45-70 bullet so not a complete waste.
I’m not sure I understand your parallel Blade? Are you comparing the 300gn to the 40gn 22lr?
Yes, I ran the numbers for a 115BC 40gn at 1080fps and a 190BC 300gn at 2000fps. The .458" bullet has four-times the frontal area of the .223" bullet, and dumps 900fps by 300yds compared to the .22LR only dropping 365fps.
At 300yds in a 10mph wind the 40gn is deflected about 12.5MoA, and the 300gn about 10MoA. Drop some velocity or BC with a flat-nosed bullet and the wind deflection would be even closer, but I'm sure there are .22LR bullets that can improve the ballistics as well. I think they're within the ballpark for practicing. Even the trajectory is within 200mm or so at midrange.
Yeah but windage knocks the lighter pill around a helluva lot more
wildcard6 wrote:There seem to be lots of issues being thrown up in replies, but here are a few responses. The range at SSAA Para in Adelaide only goes out to 300 YARDS, so that's as far as I can go with this shoot. As far as shooting at animal-shaped targets goes, I didn't invent the idea, and as far as I know, it has no bearing on hunting whatsoever. Any suggestion that it is a simulation of hunting is incorrect. What it is, is FUN! The animal shapes also give many odd corners and gaps that can cause very near misses that would otherwise have been hits on regular shaped targets like circles or squares. As to the shooting format, it will be strictly benchrest shooting. I know one chap who is a very good metallic silhouette shooter who claims that the Cowboy Lever Action Ram at 200m is very hittable offhand, but I will be using the Scoped Rimfire Ram target at 200m, which is SMALL. I will be using the same scale CHICKEN at 100m, which is 2.5 times the distance they are shot offhand. I've not been trying to come up with an Olympic event, rather just an entertaining shoot that stretches the limits on what is considered possible with a .22 rimfire. The process in South Australia when it comes to getting permission for a new shoot at a gun club is difficult. Not only do you have to challenge the status-quo of Field Rifle and 3P, but SA Police has to give their okay to anything new as well. So I'm not trying to reinvent anything, just using what we've already got in an innovative way. I have nothing against either of the two shoots mentioned above, except that I don't care to do them. In a way, silhouette shooting is a slightly more grown-up version of shooting coke cans, and who hasn't had a bit of fun with that 'back in the day'? Thanks to those who contributed positively to the conversation, enjoy your shooting. Signing off.
bladeracer wrote:in2anity wrote:bladeracer wrote:in2anity wrote:bladeracer wrote:Yes, wind would be a significant problem, although roughly on par with a 300gn .45-70 bullet so not a complete waste.
I’m not sure I understand your parallel Blade? Are you comparing the 300gn to the 40gn 22lr?
Yes, I ran the numbers for a 115BC 40gn at 1080fps and a 190BC 300gn at 2000fps. The .458" bullet has four-times the frontal area of the .223" bullet, and dumps 900fps by 300yds compared to the .22LR only dropping 365fps.
At 300yds in a 10mph wind the 40gn is deflected about 12.5MoA, and the 300gn about 10MoA. Drop some velocity or BC with a flat-nosed bullet and the wind deflection would be even closer, but I'm sure there are .22LR bullets that can improve the ballistics as well. I think they're within the ballpark for practicing. Even the trajectory is within 200mm or so at midrange.
Yeah but windage knocks the lighter pill around a helluva lot more
Do you mean more than what the software indicates? We're talking 900mm for the 300gn and 1125mm for the 40gn at 300yds. That seems close enough to me that velocity and bullet choice could push either one ahead of the other.
Bridgy wrote:Looks like a lot of fun. Para is my local range, and I plan on joining up this year as a member, once I align what I own with the disciplines I can shoot. Hope it works out for you mate!