5,000 fps coyote rifle?

[scope-eye]

I run a full case of Varget which is about 45 or 46gr of powder with the 35 and 40gr
bullets and got the speeds you are looking for, it is 10% over but I have always found published recipes from MFG are toned down probably due to them covering there collective @sses. Now I have AI versions and 5000fps is not an issue.

Dean

 

[scope-eye]

I had a .257 STW. Velocity was 4105 FPS with 100 gr TTSX. bet you neck that down to a .22 and you could get close to 5,000

I have a 6mm Mach IV which is a 257 WBY necked down to 6mm and I shoot 55gr noslers and 58gr Vmaxes 5000fps with out even breathing hard.

Dean

 

[sturner]

That's smoking

 

[just_jon]

According to Accurate Reloading, my 26" 22-250AI will push a 35 grain Berger MEF 5106 fps over 48 grains of RL12. I have not tried it being quite content with 4300 fps with a 52 grain SMK over 47.1 grains of V140.

 

[CA48]

I have a 6mm Mach IV which is a 257 WBY necked down to 6mm and I shoot 55gr noslers and 58gr Vmaxes 5000fps with out even breathing hard.

Dean

How's the accuracy and what twist are you using?

 

[scope-eye]

I have two of them one 12 and one 14 twist both 30" as far as accuracy I have never really measured them, all I can say is they shoot well beyond my capabilities. I am never really in a comfortable shooting position, either I am resting up against a tree or lying on the ground with a rock digging into my ribs. I am sure they would be well under 1/2 min and even 1/4 min if ever I decided to apply myself, you see going to a range does absolutely nothing for me I am always to worried and distracted by my surroundings to concentrate on getting a half decent grouping.

On the same note I can also use 264 WinMag and 7mm RemMag brass for this application, I can't load as hot but it still gets the job done.

Dean

 

[WampusCat]

Used to run a factory Rem VSSF II in .22-250 to 4400 FPS with the 36gr varmint grenades in my quest for a fur friendly bullet.

 

[wonderman4]

I haven't read all the posts, but this has come up several times in the past, both here and abroad. I apologize if repeating already posted information.

Roy did it beginning in 1959 at the request of the US Army.

If you're interested, here is the article: https://en.wikipedia.org/wiki/.30-378_Weatherby_Magnum

 

[sturner]

He was only getting 3500 FPS

 

[scope-eye]

I would say that limited powder development had a lot to do with that.

Dean

 

[wonderman4]

He was only getting 3500 FPS

I believe if you read the article, you will see it differently.

 

[sturner]

Yep under cartridge origin they said over 5000 FPS your right
Under ballistic they got 3500
Fast sucker ain't it

 

[ajkellerusmc]

This is like wondering if the Dow would ever exceed 10,000! As I recall the 22 Eargesplittenloudenboomer only got to 4600fps.

 

[scope-eye]

Dow is almost @ 30,000