Change of primer impact on accuracy

[melanie]

Well, as an example I can tell you my Tikka shoots about 1" groups at 200m.

You can shoot groups that size hunting?

I feel like a real novice now

[tom604]

don't sweat it Melanie, Logar would be settled in with a bipod or backpack as a rest to get those groups (good groups by the way) not many people , if any, will get those groups standing up leaning against a tree branch

[brett1868]

It's all about consistency of the burn when it comes to primers. You're standard generic primer is mass produced to a particular standard and tolerance where as match grade primers are made to a tighter tolerance with a higher price as well. Standard primers may have very minor differences in the amount of compound used which will cause a change in how the main charge is ignited which leads to different velocities if only minor. Distance compounds the irregularities as the math has shown by Sendlt but at normal hunting ranges poses no issues. I only "Match" load a few calibers I use for extended range but for hunting I do as most do and that is prime, charge, seat some lead and shoot.

For hunting I use CCI 250 LMR or CCI200 SMR
For long range Federal GM215M
416 / 50 Plinking CCI 35
416 / 50 >1000m RWS

[Lorgar]

Well, as an example I can tell you my Tikka shoots about 1" groups at 200m.

You can shoot groups that size hunting?

I feel like a real novice now

Ha ha. No

That's not free hand shooting, that's off a bipod and bench at the range.

What I was saying is my rifle and hand loads are capable of shooting 1" groups at 200m which is more than enough for any hunting. If I miss a target anywhere between 0 - 200m it's because I missed, not because of inaccurate ammunition.

There is no point me trying another primer because it won't add anything to my hunting.

[rainwalker]

Distance compounds the irregularities as the math has shown by Sendlt but at normal hunting ranges poses no issues.

Yes, I see.

Thanks for taking the time to work out the math Sendit.

And everyone for their answers.

[SendIt]

No problem.