diff --git a/src/Numerics/LinearAlgebra/Complex/DenseVector.cs b/src/Numerics/LinearAlgebra/Complex/DenseVector.cs
index e3923458..2a0885a9 100644
--- a/src/Numerics/LinearAlgebra/Complex/DenseVector.cs
+++ b/src/Numerics/LinearAlgebra/Complex/DenseVector.cs
@@ -106,7 +106,7 @@ namespace MathNet.Numerics.LinearAlgebra.Complex
         public DenseVector(Vector<Complex> other)
             : this(other.Count)
         {
-            other.Storage.CopyTo(Storage, skipClearing: true);
+            other.Storage.CopyToUnchecked(Storage, skipClearing: true);
         }
 
         /// <summary>
diff --git a/src/Numerics/LinearAlgebra/Complex/SparseVector.cs b/src/Numerics/LinearAlgebra/Complex/SparseVector.cs
index d3265cfc..2b30d279 100644
--- a/src/Numerics/LinearAlgebra/Complex/SparseVector.cs
+++ b/src/Numerics/LinearAlgebra/Complex/SparseVector.cs
@@ -123,7 +123,7 @@ namespace MathNet.Numerics.LinearAlgebra.Complex
         public SparseVector(Vector<Complex> other)
             : this(new SparseVectorStorage<Complex>(other.Count))
         {
-            other.Storage.CopyTo(Storage, skipClearing: true);
+            other.Storage.CopyToUnchecked(Storage, skipClearing: true);
         }
 
         /// <summary>
diff --git a/src/Numerics/LinearAlgebra/Complex32/DenseVector.cs b/src/Numerics/LinearAlgebra/Complex32/DenseVector.cs
index 749ce364..6c955b0e 100644
--- a/src/Numerics/LinearAlgebra/Complex32/DenseVector.cs
+++ b/src/Numerics/LinearAlgebra/Complex32/DenseVector.cs
@@ -106,7 +106,7 @@ namespace MathNet.Numerics.LinearAlgebra.Complex32
         public DenseVector(Vector<Complex32> other)
             : this(other.Count)
         {
-            other.Storage.CopyTo(Storage, skipClearing: true);
+            other.Storage.CopyToUnchecked(Storage, skipClearing: true);
         }
 
         /// <summary>
diff --git a/src/Numerics/LinearAlgebra/Complex32/SparseVector.cs b/src/Numerics/LinearAlgebra/Complex32/SparseVector.cs
index 914fc87d..c8ff0aa3 100644
--- a/src/Numerics/LinearAlgebra/Complex32/SparseVector.cs
+++ b/src/Numerics/LinearAlgebra/Complex32/SparseVector.cs
@@ -123,7 +123,7 @@ namespace MathNet.Numerics.LinearAlgebra.Complex32
         public SparseVector(Vector<Complex32> other)
             : this(new SparseVectorStorage<Complex32>(other.Count))
         {
-            other.Storage.CopyTo(Storage, skipClearing: true);
+            other.Storage.CopyToUnchecked(Storage, skipClearing: true);
         }
 
         /// <summary>
diff --git a/src/Numerics/LinearAlgebra/Double/DenseVector.cs b/src/Numerics/LinearAlgebra/Double/DenseVector.cs
index c27ec628..b634acb7 100644
--- a/src/Numerics/LinearAlgebra/Double/DenseVector.cs
+++ b/src/Numerics/LinearAlgebra/Double/DenseVector.cs
@@ -106,7 +106,7 @@ namespace MathNet.Numerics.LinearAlgebra.Double
         public DenseVector(Vector<double> other)
             : this(other.Count)
         {
-            other.Storage.CopyTo(Storage, skipClearing: true);
+            other.Storage.CopyToUnchecked(Storage, skipClearing: true);
         }
 
         /// <summary>
diff --git a/src/Numerics/LinearAlgebra/Double/SparseVector.cs b/src/Numerics/LinearAlgebra/Double/SparseVector.cs
index e38ddde7..bf0079a1 100644
--- a/src/Numerics/LinearAlgebra/Double/SparseVector.cs
+++ b/src/Numerics/LinearAlgebra/Double/SparseVector.cs
@@ -123,7 +123,7 @@ namespace MathNet.Numerics.LinearAlgebra.Double
         public SparseVector(Vector<double> other)
             : this(new SparseVectorStorage<double>(other.Count))
         {
-            other.Storage.CopyTo(Storage, skipClearing: true);
+            other.Storage.CopyToUnchecked(Storage, skipClearing: true);
         }
 
         /// <summary>
diff --git a/src/Numerics/LinearAlgebra/Generic/Vector.cs b/src/Numerics/LinearAlgebra/Generic/Vector.cs
index 6e6eeeaa..7b17d423 100644
--- a/src/Numerics/LinearAlgebra/Generic/Vector.cs
+++ b/src/Numerics/LinearAlgebra/Generic/Vector.cs
@@ -150,7 +150,7 @@ namespace MathNet.Numerics.LinearAlgebra.Generic
         public Vector<T> Clone()
         {
             var result = CreateVector(Count);
-            Storage.CopyTo(result.Storage, skipClearing: true);
+            Storage.CopyToUnchecked(result.Storage, skipClearing: true);
             return result;
         }
 
@@ -173,16 +173,6 @@ namespace MathNet.Numerics.LinearAlgebra.Generic
                 throw new ArgumentNullException("target");
             }
 
-            if (ReferenceEquals(this, target) || ReferenceEquals(Storage, target.Storage))
-            {
-                return;
-            }
-
-            if (Count != target.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "target");
-            }
-
             Storage.CopyTo(target.Storage);
         }
 
diff --git a/src/Numerics/LinearAlgebra/Single/DenseVector.cs b/src/Numerics/LinearAlgebra/Single/DenseVector.cs
index 91ab2584..918341d0 100644
--- a/src/Numerics/LinearAlgebra/Single/DenseVector.cs
+++ b/src/Numerics/LinearAlgebra/Single/DenseVector.cs
@@ -106,7 +106,7 @@ namespace MathNet.Numerics.LinearAlgebra.Single
         public DenseVector(Vector<float> other)
             : this(other.Count)
         {
-            other.Storage.CopyTo(Storage, skipClearing: true);
+            other.Storage.CopyToUnchecked(Storage, skipClearing: true);
         }
 
         /// <summary>
diff --git a/src/Numerics/LinearAlgebra/Single/SparseVector.cs b/src/Numerics/LinearAlgebra/Single/SparseVector.cs
index 67f65f14..3c89e27b 100644
--- a/src/Numerics/LinearAlgebra/Single/SparseVector.cs
+++ b/src/Numerics/LinearAlgebra/Single/SparseVector.cs
@@ -123,7 +123,7 @@ namespace MathNet.Numerics.LinearAlgebra.Single
         public SparseVector(Vector<float> other)
             : this(new SparseVectorStorage<float>(other.Count))
         {
-            other.Storage.CopyTo(Storage, skipClearing: true);
+            other.Storage.CopyToUnchecked(Storage, skipClearing: true);
         }
 
         /// <summary>
diff --git a/src/Numerics/LinearAlgebra/Storage/DenseVectorStorage.cs b/src/Numerics/LinearAlgebra/Storage/DenseVectorStorage.cs
index b6c2afb5..628027f2 100644
--- a/src/Numerics/LinearAlgebra/Storage/DenseVectorStorage.cs
+++ b/src/Numerics/LinearAlgebra/Storage/DenseVectorStorage.cs
@@ -59,13 +59,12 @@ namespace MathNet.Numerics.LinearAlgebra.Storage
             Array.Clear(Data, index, count);
         }
 
-        /// <remarks>Parameters assumed to be validated already.</remarks>
-        public override void CopyTo(VectorStorage<T> target, bool skipClearing = false)
+        internal override void CopyToUnchecked(VectorStorage<T> target, bool skipClearing = false)
         {
             var denseTarget = target as DenseVectorStorage<T>;
             if (denseTarget != null)
             {
-                CopyTo(denseTarget);
+                CopyToUnchecked(denseTarget);
                 return;
             }
 
@@ -77,7 +76,7 @@ namespace MathNet.Numerics.LinearAlgebra.Storage
             }
         }
 
-        void CopyTo(DenseVectorStorage<T> target)
+        void CopyToUnchecked(DenseVectorStorage<T> target)
         {
             if (ReferenceEquals(this, target))
             {
@@ -93,26 +92,25 @@ namespace MathNet.Numerics.LinearAlgebra.Storage
             Array.Copy(Data, 0, target.Data, 0, Data.Length);
         }
 
-        public override void CopySubVectorTo(VectorStorage<T> target,
+        internal override void CopySubVectorToUnchecked(VectorStorage<T> target,
             int sourceIndex, int targetIndex, int count,
             bool skipClearing = false)
         {
             var denseTarget = target as DenseVectorStorage<T>;
             if (denseTarget != null)
             {
-                CopySubVectorTo(denseTarget, sourceIndex, targetIndex, count);
+                CopySubVectorToUnchecked(denseTarget, sourceIndex, targetIndex, count);
                 return;
             }
 
             // FALL BACK
 
-            base.CopySubVectorTo(target, sourceIndex, targetIndex, count, skipClearing);
+            base.CopySubVectorToUnchecked(target, sourceIndex, targetIndex, count, skipClearing);
         }
 
-        void CopySubVectorTo(DenseVectorStorage<T> target,
+        void CopySubVectorToUnchecked(DenseVectorStorage<T> target,
             int sourceIndex, int targetIndex, int count)
         {
-            ValidateSubVectorRange(target, sourceIndex, targetIndex, count);
             Array.Copy(Data, sourceIndex, target.Data, targetIndex, count);
         }
     }
diff --git a/src/Numerics/LinearAlgebra/Storage/SparseVectorStorage.cs b/src/Numerics/LinearAlgebra/Storage/SparseVectorStorage.cs
index 7e7a6053..91ba3a08 100644
--- a/src/Numerics/LinearAlgebra/Storage/SparseVectorStorage.cs
+++ b/src/Numerics/LinearAlgebra/Storage/SparseVectorStorage.cs
@@ -180,13 +180,12 @@ namespace MathNet.Numerics.LinearAlgebra.Storage
             }
         }
 
-        /// <remarks>Parameters assumed to be validated already.</remarks>
-        public override void CopyTo(VectorStorage<T> target, bool skipClearing = false)
+        internal override void CopyToUnchecked(VectorStorage<T> target, bool skipClearing = false)
         {
             var sparseTarget = target as SparseVectorStorage<T>;
             if (sparseTarget != null)
             {
-                CopyTo(sparseTarget);
+                CopyToUnchecked(sparseTarget);
                 return;
             }
 
@@ -206,7 +205,7 @@ namespace MathNet.Numerics.LinearAlgebra.Storage
             }
         }
 
-        void CopyTo(SparseVectorStorage<T> target)
+        void CopyToUnchecked(SparseVectorStorage<T> target)
         {
             if (ReferenceEquals(this, target))
             {
@@ -230,16 +229,14 @@ namespace MathNet.Numerics.LinearAlgebra.Storage
             }
         }
 
-        public override void CopySubVectorTo(VectorStorage<T> target,
+        internal override void CopySubVectorToUnchecked(VectorStorage<T> target,
             int sourceIndex, int targetIndex, int count,
             bool skipClearing = false)
         {
-            ValidateSubVectorRange(target, sourceIndex, targetIndex, count);
-
             var sparseTarget = target as SparseVectorStorage<T>;
             if (sparseTarget != null)
             {
-                CopySubVectorTo(sparseTarget, sourceIndex, targetIndex, count, skipClearing);
+                CopySubVectorToUnchecked(sparseTarget, sourceIndex, targetIndex, count, skipClearing);
                 return;
             }
 
@@ -263,7 +260,7 @@ namespace MathNet.Numerics.LinearAlgebra.Storage
             }
         }
 
-        void CopySubVectorTo(SparseVectorStorage<T> target,
+        void CopySubVectorToUnchecked(SparseVectorStorage<T> target,
             int sourceIndex, int targetIndex, int count,
             bool skipClearing)
         {
diff --git a/src/Numerics/LinearAlgebra/Storage/VectorStorage.cs b/src/Numerics/LinearAlgebra/Storage/VectorStorage.cs
index 2993a0b9..ac156ed6 100644
--- a/src/Numerics/LinearAlgebra/Storage/VectorStorage.cs
+++ b/src/Numerics/LinearAlgebra/Storage/VectorStorage.cs
@@ -166,8 +166,27 @@ namespace MathNet.Numerics.LinearAlgebra.Storage
             return hash;
         }
 
-        /// <remarks>Parameters assumed to be validated already.</remarks>
-        public virtual void CopyTo(VectorStorage<T> target, bool skipClearing = false)
+        public void CopyTo(VectorStorage<T> target, bool skipClearing = false)
+        {
+            if (target == null)
+            {
+                throw new ArgumentNullException("target");
+            }
+
+            if (ReferenceEquals(this, target))
+            {
+                return;
+            }
+
+            if (Length != target.Length)
+            {
+                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "target");
+            }
+
+            CopyToUnchecked(target, skipClearing);
+        }
+
+        internal virtual void CopyToUnchecked(VectorStorage<T> target, bool skipClearing = false)
         {
             for (int i = 0; i < Length; i++)
             {
@@ -175,7 +194,7 @@ namespace MathNet.Numerics.LinearAlgebra.Storage
             }
         }
 
-        public virtual void CopySubVectorTo(VectorStorage<T> target,
+        public void CopySubVectorTo(VectorStorage<T> target,
             int sourceIndex, int targetIndex, int count,
             bool skipClearing = false)
         {
@@ -186,6 +205,13 @@ namespace MathNet.Numerics.LinearAlgebra.Storage
 
             ValidateSubVectorRange(target, sourceIndex, targetIndex, count);
 
+            CopySubVectorToUnchecked(target, sourceIndex, targetIndex, count, skipClearing);
+        }
+
+        internal virtual void CopySubVectorToUnchecked(VectorStorage<T> target,
+            int sourceIndex, int targetIndex, int count,
+            bool skipClearing = false)
+        {
             if (ReferenceEquals(this, target))
             {
                 var tmp = new T[count];