jojotater

What is a goodload for a 1 in 20 twist?

Longbow Bowhunter

In my Traditions 45 caliber with the 1:20 using heavy bullet 330 gr if memory serves right, for caliber 80 to 85 grains 2F yielded best groups.

lemoyne

Since the velicity controls the spin of a bullet -IE the fster it goes down the barrel the faster it spins-you can get the same results as a 1-28 by reducing the velicity. My experance is that a 1-20 works good for 1100 to 1600 fps with bullets from 200 to 350 gr.Lee

eldeguello

Assuming this is a .45 caliber, it is the classic, standard .45/70 twist rate. You should use full-caliber, conical bullets between 300 and 500 grains with 70 up to 120 grains of FFg BP or an equivalent replica powder by volume.

You will probably get your best accuracy with the heavier bullets. My 1/20" twist .45's shoot very well with the Lyman-Gould .457122HP (342 grains from pure lead) sized .451"-.452", so they are a tight sliding fit in a clean bore. They expand into the rifling like a Power Belt on firing. I use a .45 Wonderwad under the bullet, and shoot them "naked" - no lube on the bullet..

jojotater

I'm sorry I didn't give enough information. It is a 50 cal. Traditions buckskinner carbine.