Welcome to the Square Table. No. 4 Sporter is lightest, and length no more than 23", but 22" would be optimum with such a light contour, considering wall thickness at muzzle.. No. 5 Sporter is best, 24" to 25". No. 6 Sporter contour would be the heavy weight. I used to wonder about fluting a No. ^6 but that would probably be silly, and interfere with barrel-sights. 1:14" twist is optimum, but 1:10" to 1:20" may be considered for special purposes ... nah.
Ron aka "Rip" for Riflecrank Internationale Permanente NRA Life Benefactor and Beneficiary .458 Winchester Magnum, Magnanimous in Victory THE WALKING DEAD does so remind me of Democrap voters. Donkeypox.
