guide gun velocity

[Parson]

Has anyone made a factual comparison between the guide gun and standard 1895, 45-70 velocity, especially with heavier bullets? If so, what did you find?

[BABore]

Usually between 20-30 fps per inch. Brian Pierce has some data on this in an article he wrote in "Handloader" a couple years ago. Rick Jamison did a comparison in "Shooting Time" when the 450 Marlin was just out too. You can also ask around on Marlinowners and Levergunlovers forums. People there have done some tests. The 20-30 fps is the general consensus of all those sources.

[Ole]

My 18.5" Guide gun in 450 Marlin typically shoots about 100FPS below data that's listed for 22" barrels.

[corvette8n]

Older guide guns were also ported the new ones are not, so you loose a little there.