there are currently 3 versions of what is supposedly what that appear in the AGB website and they all have different guidance notes.
so back to other people's assumtions about my scribblings. the refeerence to mechanical release aids appears in one of them and tbh how can it significantly increase the velocity of an arrow if the bow doesnt have enough oomph to propel it at silly speeds in the first place?
If an arrow from a compound is doing 211 fps at 100 yds why it is somehow more powerful than an arrow from a recurve doing 214 fps of a very similar weight? I am making calculations using measurements taken with a chrono and then put through published tables for drag etc, not assumptions about someone else's bow.
regarding overshoot, again there are different versions, depending on which document you use so is it 50yds, 50yds or 50m beyond any distance shot, a total of 150 yds or 50yds + some more for a mechanical release or somethng else?. they are all mentioned.
One of the papers doesnt have anything about indoor ranges so if you took that to heart they dont fulfil the overshoot criteria so cant be used.
Our berm is 3.4m high so hoovers up arrows that fly at a linear tangent of 2 degrees at 140m. This doesnt seem like a lot but sonsider you target at 100 yds is less than half a degree across it is an overshoot of 3 target diameters and that equates to an extra 40 yds behind the target. If you walk nearer that angle increases which actually increases the amount of beaten ground
I do agree that there appears to be a large amount of guesswork (around virus containment) and that is a problem that no-one wants to even challenge. the latest data shows that wearing a mask means you are twice as likely to get infected as you are when distancing at 2m but we havent had a press release from AGB with updated advice and i doubt if we will hear anything to change their current guidance for a long time to come. The likely reason for the greater risk for mask wearers is twofold, increased risk by prolonged contact with others and the liklihood of people touching their masks to adjust them and contaminating themselves.
same goes with the non handling of other people's targets, the stricture is based on WHO output that they then recinded about 3 days later and then completely disowned by the end of March but it has stuck in the minds of the press and AGB in particular.
No-one in my club has used gloves correctly so again people are creating a greater risk by relying on them rather than simply washing their hands after putting the targets out and the after putting them away agin.
When I used to design and build rifle and pistol ranges we used to have to design them for a minimum specification but a lot of what you could do was dependant upon the materials used and where these were utilised. Once done the army certified them to conform with their AFK1314 because they may have been needed in an emergency in tmes of peril and they needed to know what classes of ammunition could be used where ( so differnt bullets make a difference to range construction with say timber added to hard armour plate for full metal jacket rounds). Indeed, the first one I built which was my "home" range was used by the army and police during the Iranian Embassy seige. The certificate showed the limits of what could be shot regarding velocity and energy, the rest was down to whether what your did fulfilled the overall template so steel baffles could be used on an outdoor 300m rifle range instead of having a mile of spare land for an overshoot. Take off angles for different classes of firearm and shooting position were taken into account but there was no mention of a heated clubroom in any of the technical documents. With regard to backstop they listed a number of existing types and you were invited to follow that lead or show why yours was as effective so a short range tunnel range could be built in a person's garden utilising a concrete pipe and no 4m berm, anti splash wood cladding etc.
now none of this logic appears to have been applied to an archery range, merely a bias against certain types if equipment withlout having gone through the nuisance of checking what differences it actually makes. Gravity affects everything the same so it should be possible for someone to tell me what is a safe angle of elevation for any bow and therefore design a template to fit them.
so back to other people's assumtions about my scribblings. the refeerence to mechanical release aids appears in one of them and tbh how can it significantly increase the velocity of an arrow if the bow doesnt have enough oomph to propel it at silly speeds in the first place?
If an arrow from a compound is doing 211 fps at 100 yds why it is somehow more powerful than an arrow from a recurve doing 214 fps of a very similar weight? I am making calculations using measurements taken with a chrono and then put through published tables for drag etc, not assumptions about someone else's bow.
regarding overshoot, again there are different versions, depending on which document you use so is it 50yds, 50yds or 50m beyond any distance shot, a total of 150 yds or 50yds + some more for a mechanical release or somethng else?. they are all mentioned.
One of the papers doesnt have anything about indoor ranges so if you took that to heart they dont fulfil the overshoot criteria so cant be used.
Our berm is 3.4m high so hoovers up arrows that fly at a linear tangent of 2 degrees at 140m. This doesnt seem like a lot but sonsider you target at 100 yds is less than half a degree across it is an overshoot of 3 target diameters and that equates to an extra 40 yds behind the target. If you walk nearer that angle increases which actually increases the amount of beaten ground
I do agree that there appears to be a large amount of guesswork (around virus containment) and that is a problem that no-one wants to even challenge. the latest data shows that wearing a mask means you are twice as likely to get infected as you are when distancing at 2m but we havent had a press release from AGB with updated advice and i doubt if we will hear anything to change their current guidance for a long time to come. The likely reason for the greater risk for mask wearers is twofold, increased risk by prolonged contact with others and the liklihood of people touching their masks to adjust them and contaminating themselves.
same goes with the non handling of other people's targets, the stricture is based on WHO output that they then recinded about 3 days later and then completely disowned by the end of March but it has stuck in the minds of the press and AGB in particular.
No-one in my club has used gloves correctly so again people are creating a greater risk by relying on them rather than simply washing their hands after putting the targets out and the after putting them away agin.
When I used to design and build rifle and pistol ranges we used to have to design them for a minimum specification but a lot of what you could do was dependant upon the materials used and where these were utilised. Once done the army certified them to conform with their AFK1314 because they may have been needed in an emergency in tmes of peril and they needed to know what classes of ammunition could be used where ( so differnt bullets make a difference to range construction with say timber added to hard armour plate for full metal jacket rounds). Indeed, the first one I built which was my "home" range was used by the army and police during the Iranian Embassy seige. The certificate showed the limits of what could be shot regarding velocity and energy, the rest was down to whether what your did fulfilled the overall template so steel baffles could be used on an outdoor 300m rifle range instead of having a mile of spare land for an overshoot. Take off angles for different classes of firearm and shooting position were taken into account but there was no mention of a heated clubroom in any of the technical documents. With regard to backstop they listed a number of existing types and you were invited to follow that lead or show why yours was as effective so a short range tunnel range could be built in a person's garden utilising a concrete pipe and no 4m berm, anti splash wood cladding etc.
now none of this logic appears to have been applied to an archery range, merely a bias against certain types if equipment withlout having gone through the nuisance of checking what differences it actually makes. Gravity affects everything the same so it should be possible for someone to tell me what is a safe angle of elevation for any bow and therefore design a template to fit them.