Aug 04

Silhouette Match Instructions.

Instructions and Rules

Match Rules and Details at RFC

NRA Silhouette Rules at NRA web site.

NRA Silhouette Rulebook (link broken) downloadable from this site.

NRA Silhouette Flier (link broken) (2013) downloadable from this site – coming soon.

Overview

Match #1 – NRA Standing – 40, 60, 77, & 100 Meters or Yards (traditional Smallbore Rifle Silhouette)
With steel targets or paper targets. Targets may be 1/5th or 3/8th size.

Match #2 – RFC Benchrest – All animals at 100 yards
With steel targets or paper targets. Targets may be 1/5th or 3/8th size.

Match #3 – RFC Benchrest – 60, 100, 125 & 200 yards.
With steel targets or paper targets. Targets may be 1/5th or 3/8th size.

Matches 2 & 3 will follow the traditional NRA silhouette rules pertaining to equipment, time limits, etc. or be classified as “Open” to include benchrest styled rifles.

Q&A

Q&A, TIPS, TRICKS, and DISCUSSIONS are found on the RFC thread here.

Targets

Instructions for ordering targets are found here.
Scale drawings of the targets in PDF are found on the NRA site here.

Scoring

The scoresheet is hosted on this site here as a JPG.

Reporting Results

MATCH# (1, 2 or 3) Meters or Yards
RIFLE DIVISION: (STANDARD, HUNTING or OPEN for match 2 & 3)
SHOOTER CLASS: (M, AAA, AA, A, or B)
FIREARM: Savage MKII F
SIGHTS: (Scope – “6-18x Nikon target dot”, Aperature – “Lyman”, Open)
AMMO: (Type of ammo used ex: Wolf Extra Match)

NAME: Sal Whouette
HOMERANGE: Scranton area, Pa.
SIZE TARGET: 1/5 Steel

Chicken…….7
Pig………….6
Turkey……..2
Ram…………2

Total Score – 17

Report results on the RFC forum.  Scores are reported in separate threads by month here.

Aug 03

Derivation of Riflescope Parallax Equation

Derivation of Riflescope Parallax Equation Workbook

Click the link below to open/download an Excel (xlsx) workbook that allows you to enter your scope’s values and visually observe on a graph the amount of parallax errors which might be incurred.  The workbook and calculations are derived from the article/post:  “Derivation of Riflescope Parallax Equation” by Michael G. Tappy, December 30, 2008 (Revision 1: 14 Jan. 2009).  The article is posted at the forum on rimfirecentral.com.

Link to open/download the workbook:  Derivation_of_Riflescope_Parallax_Equation.xlsx

Note:  The workbook does assume you have either read the article or have a basic understanding of parallax errors.

Jul 29

Aperture (Peep) Sights

Aperture Sights – Parallax Suppression with a Target Rifle Aperture Sight

Article on peep sights and the suggestion that sight alignment, in the traditional sense, does not affect the point of aim.  A must-read for those that use peep sights or are debating irons versus optics.

Authors:  Robert J. Burdge and Douglas A. Kerr, P.E.

Issue 4, May 30, 2007
Click here to open the article in a new window / tab.