NATIONAL HUNTING & Fishing Day will be celebrated next Saturday -- September 26 -- with an outdoors exposition in Manassas and an open house at the vast Remington Farms wildlife management area in Chestertown.

The Outdoor Adventure Show at the Prince William County Fairgrounds will offer, among other things: Tom Flemming showing how to rattle up a big buck with the antlers of one who fell for the same trick; Stacy Grosscup proving what he claims about instinctive bow shooting by shafting aspirin tablets and clay pigeons in mid-air; and Ken Martin demonstrating bowfishing for carp. Fishing columnist Gary Diamond will emcee, and there will be several drawings for exotic fishing and hunting trips. Admission is $4 for adults, children under 10 free. It's 10 to 8 Saturday and Sunday. To get there, take Rte. 234 south from I-66 seven miles through Manassass to the fairgrounds.

The Remington Farms Open House will have free admission, free parking and free use of the fabulous 3,300-acre Eastern Shore farm from 10 to 5. The offerings will include:

Exhibitions by wildlife artists, craftsmen, naturalists, historians and conservationists, including Indian hunting and fishing artifacts and antique firearms.

Shooting and fishing clinics, programs on gun and boating safety, and demonstrations of the cannon nets used to capture waterfowl and wild turkeys for banding.

Participation, with professional guidance, in such activities as clay-target and metallic-silhouette shooting, archery and flycasting.

Or just wander the farm, which teems with one of North America's heaviest and healthiest concentrations of wildlife. TO GET THERE --

Remington Farms is about an hour's drive from Washington. Take U.S. 50 across the Bay Bridge to U.S. 301 north and turn left on Maryland 213. Proceed through Centreville and Church Hill to Chestertown and turn left onto Rte. 291. Less than a mile along, at the T intersection, turn right on Rte. 20; go 8.5 miles to a left turn on Ricauds Branch/Langford Road, marked by a Remington Farms sign.