Continuing a quest for Precision

This will be my first post here, so hoping you all find it informative. A bit of background first though. I have been shooting for 40 years, Reloading for 20 years, Precision shooting/Benchrest shooting for about 4 years. I still don’t know a dadgum thing. Every time I think I have had an AH HAH! moment, it leads me to another question, down another road. I have shot at 1000 yards at small targets, shot in groundhog shoots, UBR matches and 300 and 500 yard egg shoots. All have thought me several things.

Number 1 – You can not be consistent enough reloading. Neck tension, seating depth, bullet sorting and how you measure your powder charge separates the guy who misses or the guy that hits, the fellow that is in the top five or the bottom fifty.

Despite my experience,I remain non-OCD about my bench. Controlled chaos. Remember Einstein’s desk!

Continuing a quest for Precision 2

Number 2 – Gun Handling. I noticed this during the last 20 years of running the 100 yard Kids egg shoot during Hunting/Fishing Day at my gun club. Girls shoot better – Why?

Continuing a quest for Precision 4

This young lady whipped my butt at my club’s UBR match with a 6ppc. Look at her eyes – ” I got you, boy. ” Fierce to say the least.

They listen to instruction, they have no macho preconceived notions, no bad habits. This results in better gun handling skills i.e trigger control, stock placement and repeatability. My first quest was to unlearn what I had learned, then go at it from a newbie point of view. Easier said than done.

Number 3 – refer to number one for random flyers, refer to number two if you find yourself blaming equipment for your sorry groups.

I wish I could give a definitive guide for quantifying the effects of mirage, sunlight and shade on your hits but that is a whole (maybe a series) of posts that I won’t get into here.

Among several customs I have had put together over the years this is my latest –

Continuing a quest for Precision 6

6BR 272 neck, Use Krieger Barrel, chopped to 25″ and rechambered

Stockey’s stock, PTG Oberndorf bottom metal, Jewell trigger

Bedded, painted by me with Duracoat.

Having another 6 BR and previous experience with this cartridge gave me a bit of advantage in finding the sweet spot fast but will describe my methods with the hope you can adapt this to what rifle cartridge you are loading.

My choice of bullet was the 105 Berger HVLD. Choice of powder was Varget. Started by measuring my new chamber. There are several methods but my preference is to use a shot case, unsized and slightly run it up into my Redding bushing die to give a bit of tension. Seat a bullet that has been coated black with a sharpie marker by hand. Insert into the chamber and close the bolt. The mark you are looking for is like a squared off U. Somewhat like I-I.

Continuing a quest for Precision 8

Now you have base to ogive where it is touching the lands. I take this measurement with a Hornady comparator gauge and calipers.

I started with a .003 jam into the lands and three different powder charges, separated by .01 grain. My first groups showed promise but had some random flyers. Settled on the best charge by group size and loaded some more ( now fire formed ) with the bullet just kissing the lands. Much better results.

Continuing a quest for Precision 10

Continuing a quest for Precision 12

Having a bit of trouble with pictures here but suffice it to say two of the five shot groups measured .280 and .286. Room for improvement but not a bad start.

My next step will be to take this to 300 yards and tweak the load this way or that. Hopefully will have some good results to show you all. I will also show my set up for Bench/ Long Range shooting provided I figure out the picture thing.

Edit – Figured out the pictures. Thanks LoB!

Shoot straight!

 

Continuing a quest for Precision 14

 

Share this:

13
Leave a Reply

Please Login to comment
  Subscribe  
newest oldest most voted
Notify of
243 Outdoors
243 Outdoors

Welcome aboard. You will be a great asset to the community.

NickJ
NickJ

Just starting with the longer range shooting. Finished building a AR-15 in 6.5 Grendel only to find it’s probably only good for about 800 yards, maybe a 1000 if I work at it. Actually won an AR-10 in 6.5 Creedmoor in a contest not to long after finishing the 6.5 Grendel build and might use that when I save up more money ! Now I’m realizing I need to go bigger, maybe a 308 upper for that AR-10 I won ! I think I need that 308 in a bolt action upper for the AR-10, ( If that’s possible )… Read more »

Coldbore
Coldbore

Welcome aboard. Shot a 0.078 group a week ago but only a 3 shot group. Using a Barnard P
action, 32 inch Bartlein barrel and sits on top of a 50 cal McMillan stock. Shooting a
6.5×284. I shoot the Sierra 130 gr TMK jammed slightly into the lands.

TreeTopFlier
TreeTopFlier

Great first post rebel! Ive always thought you had a knack for telling a story and sharing your hard earned knowledge at the same time. I really look forward to your future updates and stories. This posting format does take a little getting used to.

tcoz
tcoz

Welcome rebel. Good first post. I can’t disagree with a single thing that you said. Point Number 2 made me laugh. I’ve taken a number of guys to the range for their first ever time shooting and it’s exactly as you described. They’re too busy trying to imitate what they see on television and trying to be cool, not looking like newbies. Well, a couple of months ago I took my sister to the range. She lives in Illinois, near Chicago, so needless to say she isn’t really gun friendly but was willing to try it. She had never even… Read more »

CharlieBrassStuffer
CharlieBrassStuffer

This oughta be a good author to follow….nobody goes down rabbit holes like a benchrest shooter, nobody. Their passion for a complete understanding of ballistics makes my ‘OCD’ pale in comparison.
Welcome aboard rebel…you found yourself a new platform here. There’s lots of eager and hungry loaders who want to know.
c h a r l i e

Loads of Bacon
Loads of Bacon

Welcome aboard! I’m really looking forward to the information you have to share.

ewetho
ewetho

When I wear out my .308 it will become a 6mm BR….
But till then .5″ groups will have to sufice.