What 7mm bullet do you recommend for 1 mile?
- Thread starter SteveOak
- Start date
I went 190 lrht based on skwerlz advice.
180g ELDM
I was successful with these.
SteveOak
Gold $$ Contributor
The BC is definitely the attraction for me.
I am at the point of speccing the reamer and want to consider alternatives to the A-Tip in case I can't get them to work for me. "Ton" is slightly less precise than Manson would accept as a spec. LOL
The barrel I have on order is 8 twist.
I am at the point of speccing the reamer and want to consider alternatives to the A-Tip in case I can't get them to work for me. "Ton" is slightly less precise than Manson would accept as a spec. LOL
The barrel I have on order is 8 twist.
All I know for sure is .227" is NOT enough. My guess is in the neighborhood of .270" to get the boattail/shank and the bottom of the neck to line up with a decent jump. I suggest a dummy round with instructions to allow for .040" or so jump.
I might have a 7prc case at home, I’ll stuff a 190LRHT in it if I do.
There’s only about 20 thou of difference in seating depth between the 190’s at touch in my barrels.
It has a .230ish freebore on a regular 7PRC reamer already so I’d just run that.
With the slight shorter neck compared to 7 saum that should be Gucci.
centerlineseal
Gold $$ Contributor
In the data I've seen from 1 mile.... the 190 ATIPs have the advantage. Unless you get into custom bullets like Warners. If you go custom... you need to tell the bullet maker to the .xxxx" place the bore and groove size your barrel is made to. Otherwise I don't feel you get all your suppose to out of the solids. Watch your twist also.
Around a 1k yards and less... none and I mean none of the bullets that were used for pressure and velocity testing from the accuracy data I got back for the 7/6.5PRC. That no bullet just ran away from the other ones. Then it comes down to your load and what your gun likes and the guy pulling the trigger and reading the wind.
Yes you need a 1-8 for the Atips. If you try the 197SMK you need a 7.5 twist if I recall correctly.
Go 5R for rifling. It is proven now that it helps the bc and the flight of the bullet vs conventional rifling.
Later, Frank
Bartlein Barrels
Around a 1k yards and less... none and I mean none of the bullets that were used for pressure and velocity testing from the accuracy data I got back for the 7/6.5PRC. That no bullet just ran away from the other ones. Then it comes down to your load and what your gun likes and the guy pulling the trigger and reading the wind.
Yes you need a 1-8 for the Atips. If you try the 197SMK you need a 7.5 twist if I recall correctly.
Go 5R for rifling. It is proven now that it helps the bc and the flight of the bullet vs conventional rifling.
Later, Frank
Bartlein Barrels
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