Reliably Detect Fast Projectiles?

I'm working on destructible barriers in my game. I'm not done with all the weapons yet, but my current ones shoot out a bullet called "basicbullet". The walls are supposed to lose exactly one hitpoint every time they're hit, however, using the touched event isn't very reliable as sometimes the wall might lose more than 1 and sometimes will fail to detect the bullet.

Here's a clip showing the speed of the bullet (it goes pretty fast): https://gyazo.com/390b3cc8bdc6cc1fe103101972e03af1

Here's the wall script: Note that only the first few lines are hit detection, the rest of it is just the smoke effect when it loses enough health.

local CollectionService = game:GetService("CollectionService")
local parttodestroy = CollectionService:GetTagged("WoodWall")

for _, TaggedPart in pairs(parttodestroy) do
	local model = TaggedPart
	local originx = model.Position.x
	local originy = model.Position.y
	local originz = model.Position.z
	local enabled = true
	local hitpoints = 18
	local maxhitpoints = 18
	local crithit = maxhitpoints/2.5
	local emitter = Instance.new("ParticleEmitter")
	emitter.Enabled = false
	local location = "none"
	local checkfora = (model.Position - workspace.FlagA.Hitbox.Position).Magnitude
	if checkfora < 250 then
		location = "a"
	end
	TaggedPart.Touched:Connect(function(hit)
		if enabled == true then
			if hit.Name == "basicbullet" then
				hitpoints = hitpoints - 1
			end
			if location == "a" then
				workspace.FlagA.BaseHealth.Value = workspace.FlagA.BaseHealth.Value - 1
			end
			print(hitpoints)
			print(workspace.FlagA.BaseHealth.Value)
			if hitpoints <= crithit then
				emitter.Rate = 75
				emitter.Lifetime = NumberRange.new(1.7, 2.5)
				emitter.Enabled = true 

				emitter.Texture = "rbxassetid://405886187"
				local colorKeypoints = {
					ColorSequenceKeypoint.new(0, Color3.new(0.945098, 0.788235, 0)),
					ColorSequenceKeypoint.new(0.1, Color3.new(1, .5, 0)),
					ColorSequenceKeypoint.new(0.5, Color3.new(1, 0, 0)),
					ColorSequenceKeypoint.new(1, Color3.new(0, 0, 0))
				}
				emitter.Color = ColorSequence.new(colorKeypoints)
				local numberKeypoints = {
					NumberSequenceKeypoint.new(0, 0);
					NumberSequenceKeypoint.new(0.3, 0.25);
					NumberSequenceKeypoint.new(0.5, 0.4);
					NumberSequenceKeypoint.new(1, 1);
				}
				emitter.Transparency = NumberSequence.new(numberKeypoints)
				emitter.LightEmission = 0.30

				emitter.EmissionDirection = Enum.NormalId.Front
				emitter.Speed = NumberRange.new(0, 1)
				emitter.Drag = 1
				emitter.VelocitySpread = NumberRange.new(0, 0)
				emitter.VelocityInheritance = 0
				emitter.Acceleration = Vector3.new(0, 10, 0)
				emitter.LockedToPart = false
				emitter.SpreadAngle = Vector2.new(-10,10)

				local numberKeypoints2 = {
					NumberSequenceKeypoint.new(0, 1); 
					NumberSequenceKeypoint.new(1, 0.7);
				}
				emitter.Size = NumberSequence.new(numberKeypoints2)
				emitter.Rotation = NumberRange.new(15, 15)
				emitter.RotSpeed = NumberRange.new(10, 20)

				emitter.Parent = TaggedPart
			end
			if hitpoints <= 0 then
				emitter.Enabled = false
				enabled = false
				model.Transparency = 1
				model.CanCollide = false
				model.Position = Vector3.new(model.Position.x, -50, model.Position.z)
				wait(20)
				model.Position = Vector3.new(originx, originy, originz)
				model.Transparency = 0
				model.CanCollide = true
				enabled = true
				hitpoints = 18
			end
		end
	end)
end

What would be the most reliable way to reduce the hitpoints by exactly 1 every time the wall is hit by a projectile? Thanks for your help :)