what BC and bullet lenght?

[47guy]

what BC and bullet length are you guys using in your kestrels with SK rifle match?

 

[Shawn1492]

For a BC try .125, the thread about twist rate has some info about BC and calculators worth reading.

 

[47guy]

Ok thanks

 

[brian01tj]

I use a G1 BC of .16. I believe bullet length only matters for spin drift so....yeah I basically ignore accuracy here. I always use a length of .25"

 

[47guy]

I use a G1 BC of .16. I believe bullet length only matters for spin drift so....yeah I basically ignore accuracy here. I always use a length of .25"

thanks I’ll try this

 

[CodeMonkey]

This is what strelok pro has for SK Rifle Match in it's database:

 

[justinmac13]

Not to hijack the thread, but on StrelokPro it has the option for drag function RA4 for .22. Has anyone used it, I tried it the other day but truing was closer to G1 so I changed it back to G1

 

[47guy]

so the big problem was i was using a G-7 BC...using the numbers below...
MV at 1073
G-1 bc .114
BL .480 puts my kestel numbers within .1mil out to 330yds...ill true everything up when i get out again...thanks everyone.

 

[Shawn1492]

nice Work. You shooting any matches soon?

 

[barronian]

Not to hijack the thread, but on StrelokPro it has the option for drag function RA4 for .22. Has anyone used it, I tried it the other day but truing was closer to G1 so I changed it back to G1

RA4 works better for me - at least out to 200m. Just remember that the BC changes from the G1 BC. With my current block of Eley Match i use an RA4 BC of 0.112. This ties very well with my measured velocities and and DOPE. The G1 BC would be around 0.14.

Remember that BC isn't a constant :-( from batch to batch of the same round type it can vary - say 0.125 to 0.16 (G1).

 

[47guy]

nice Work. You shooting any matches soon?

our next NRL is the 28th of march...i shot our NRL on the 22nd got 6th.