Recipe for a Low Pressure 20 ga.

[VH20]

I would consider ditching the AA hull for a low-pressure load, and look at loads using straight-walled, paper base-wad hulls like the Federal promo hull (just from a design standpoint). However, the WW209 primer seems to be a consistent component in many low-pressure loads.

It's tough to get the smaller bores to operate on the low side. Please report back on your final choice!

[Marc Retallack]

Bobby

I agree with Jim's suggestion for straight walled hulls. Either Cheddite or Federal. I looked over all the load data I have. I could not find any load under 10,000psi with that specific combination of components.

Keeping the AA hulls, I found this load in Hodgdon's 2008 manual-
7/8oz, 16.5gr 800X, Rem 209P, Rem RXP20, 1200fps @ 7500psi.

Using Cheddite hulls (Lyman's 5th)-
7/8oz, 17gr 800X, Rem 209P, Rem RXP20, 1200fps @ 6600psi.

Marc

[Big D]

Primer substitution can make a difference. Here's some 12 gauge data:

http://www.armbrust.acf2.org/primersubs.htm