Precision rimfire and barrel seasoning

[Mystic Precision]

Do you weight sort or check rim thickness or case length. In the past I did rim thickness checks but found with the upper tier ammo it was pretty much a big waste of time. However I did find positive results with weighing rounds but its time consuming and for our type of shooting not worth the effort in my opinion. By the way, N in AN is not required when the following word does not start with a vowel. Haha I know you will get it .

So far, sorting using various metrics hasn't helped. it is the stuff inside that we can't see nor measure that is the cause of most of the zingers. I have used base to ogive and that seems to improve things quite a bit but you can still get some big outs.

So I just go with the higher grades and hope to find a good lot.

Test, test, test....

Jerry

 

[Longstud]

Have you ever sorted by weight on a really accurate scale. Thats the one thing that I found worked the best but its SOOOOoooo boring. Id much rather send em than try to diagnostically figure out whats the best. Buy the good cheese and hope it was a great year. Mr Gs got this part correct and I didnt google synonyms. Oil to Water come in. Ok you can be oil and Ill be water. HUMOUR without hatred. New concept to try?

 

[emerson]

I’m glad some of you have the patience to try sorting by the various metrics and post the uncertain results. The silver lining to my geekiness is that I do get impatient and resort to blunt force actions. I appreciate the folks who compile sound data so I can get back to what I do best. Keep up the good work.

 

[Buck1950]

Sorta on the topic I found a reference on RFC to a builder in USA who has several YT-vids about his processes. I've only watched 3 and still learning. This one is especially informative and tho I'll prob never afford his products it's a good watch and worth the time. "Eagle Eye Shooting" - ( # dpgunworks )
https ://www.youtube.com/watch?v=LOHvOX8AYEw

 

[Mystic Precision]

Have you ever sorted by weight on a really accurate scale. Thats the one thing that I found worked the best but its SOOOOoooo boring. Id much rather send em than try to diagnostically figure out whats the best. Buy the good cheese and hope it was a great year. Mr Gs got this part correct and I didnt google synonyms. Oil to Water come in. Ok you can be oil and Ill be water. HUMOUR without hatred. New concept to try?

Problem is how do you replace the lube? It is important and I want that stuff on my bullets.

So weighing cases is moot.... lube is far from consistent

There is definitely a tightening of the core group as you go up in ammo grades... which is the point given how it is sorted and then packaged. Problem is the real good stuff is rarely released to the commercial market so we have to make do with 'close enough'.

Given the target sizes in PRS, I feel that hit potential over 90% in competition is doable.... there have been strings where I have hit 100% in practise. But if the targets take a drastic downsize, then the game becomes more of chance then skill

For now, matches I have attended have a good balance between gear, ammo and scores. All we can ask for...

Jerry

 

[Mystic Precision]

Sorta on the topic I found a reference on RFC to a builder in USA who has several YT-vids about his processes. I've only watched 3 and still learning. This one is especially informative and tho I'll prob never afford his products it's a good watch and worth the time. "Eagle Eye Shooting" - ( # dpgunworks )
https ://www.youtube.com/watch?v=LOHvOX8AYEw

I have enjoyed his videos and it is nice to see someone testing in the real world. There are points we do not agree on and many that we do. We have to draw from many areas of internal and external ballistics to try and understand the riddle that is rimfire.

in Canada, we have traditionally had a longer average distance in our PRS matches so some of the choices made can be different from our US friends. I would definitely look at a 120yds world much differently then a 450yds one.

But this is and will always be an ammo game. The next big leap will be when one of the manfs decides there is enough of a market to warrant upping the QC on what they stuff in those boxes.

And that can only start when they decide, there is a world beyond 50ms

Jerry

 

[Mystic Precision]

I’m glad some of you have the patience to try sorting by the various metrics and post the uncertain results. The silver lining to my geekiness is that I do get impatient and resort to blunt force actions. I appreciate the folks who compile sound data so I can get back to what I do best. Keep up the good work.

Unfortunately, all the testing has proven what was obvious at the beginning... top grades of ammo lead to the best possible results... and that costs money.

Within some budgets, compromises have to be made.... which can be very frustrating to those who want to improve. All I can offer is that the rifle is not the most important place to put limited resources.

Better to have a decent $1000 rifle and $5000 in ammo budget... vs $5000 rifle and a $1000 ammo budget. Many rifles can shoot well... a very limited range of ammo is competitive

YMMV

Jerry

 

[Hardhammer]

Unfortunately, all the testing has proven what was obvious at the beginning... top grades of ammo lead to the best possible results... and that costs money.

Within some budgets, compromises have to be made.... which can be very frustrating to those who want to improve. All I can offer is that the rifle is not the most important place to put limited resources.

Better to have a decent $1000 rifle and $5000 in ammo budget... vs $5000 rifle and a $1000 ammo budget. Many rifles can shoot well... a very limited range of ammo is competitive

YMMV

Jerry

Exactly the choice i had to make.....

 

[GunsNotPuns]

Interesting video by Womfat on the topic of cleaning:

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[TheWhole9Yards]

Interesting video by Womfat on the topic of cleaning:

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Matt talks the talk, and more importantly walks the walk.

 

[HOSSONE]

I shoot the same rifle, I find after about 400-500 rounds there is a noticeable growth in group size when running SK ammunition. I usually bore snake the barrel and inspect/clean the chamber/chamber mouth. I haven't found value in running a brush and patches as of yet. After that it will take about 20 rounds for things to settle in and its good to go. I like to do this a week before a match and get out to the range a couple of times to shoot groups and know what its doing, and shoot the match with the rifle in that known condition. Its not a perfect science by any stretch, but it allows me to be confident in the rifle and reduce any new variable into the equation during a match. I would under no circumstances want to clean the bore during a match.

As you've seen in this thread I don't believe there is a one size fits all solution. As long as you use the proper technique and equipment I don't think you can overclean your bore either, so find what works for you and do that.

I also have the same rifle. I was cleaning to much and agree when I backed off accuracy increases. I haven't got to the 4 or 5 hundred round mark yet since i stopped cleaning as much but that is good to know. I've really been loving the rimfire since I got this gun.