![Nicholas Drummond on Twitter: "If the notional "6.8 mm Creedmoor" is still too powerful, another option would be to reduce the calibre to 6 mm or 6.35 mm. Hornady has already developed Nicholas Drummond on Twitter: "If the notional "6.8 mm Creedmoor" is still too powerful, another option would be to reduce the calibre to 6 mm or 6.35 mm. Hornady has already developed](https://pbs.twimg.com/media/E4fXjnuXEAI4fbn.jpg:large)
Nicholas Drummond on Twitter: "If the notional "6.8 mm Creedmoor" is still too powerful, another option would be to reduce the calibre to 6 mm or 6.35 mm. Hornady has already developed
Single shot garden rifle calibre 6 mm Flobert German manufacture Geco model 1925 number 167256. Weapon of category "C". Functional mechanism. (State 1).
![A breechloading air gun,Anton Pell,Linz,circa 1780. Octagonal,tilting iron barrel with smooth inserted brass bore in 6 mm calibre. Dovetailed brass front sight and iron rear sight. Engraved signature "Anton Pell in Linz" A breechloading air gun,Anton Pell,Linz,circa 1780. Octagonal,tilting iron barrel with smooth inserted brass bore in 6 mm calibre. Dovetailed brass front sight and iron rear sight. Engraved signature "Anton Pell in Linz"](https://c8.alamy.com/comp/CYP79Y/a-breechloading-air-gunanton-pelllinzcirca-1780-octagonaltilting-iron-CYP79Y.jpg)
A breechloading air gun,Anton Pell,Linz,circa 1780. Octagonal,tilting iron barrel with smooth inserted brass bore in 6 mm calibre. Dovetailed brass front sight and iron rear sight. Engraved signature "Anton Pell in Linz"
![LONG ARMS, MODERN HUNTING WEAPONS, Steyr model 1909, calibre 6,35 mm, number 24976A, Additional-Rights-Clearance-Info-Not-Available Stock Photo - Alamy LONG ARMS, MODERN HUNTING WEAPONS, Steyr model 1909, calibre 6,35 mm, number 24976A, Additional-Rights-Clearance-Info-Not-Available Stock Photo - Alamy](https://c8.alamy.com/comp/T3KR54/long-arms-modern-hunting-weapons-steyr-model-1909-calibre-635-mm-number-24976a-additional-rights-clearance-info-not-available-T3KR54.jpg)