I would give this fellow a call and ask that question as he is best qualfied to answer your question. These swage die makers are smart folks. [img]/ubbthreads/images/graemlins/wink.gif[/img] web page RCE Co. - Commerci
"A HUNTER SHOULD LIVE OFF HIS GUNS" JOHN TAYLOR
I have shot a few of Richards Wildcats in .30cal. Mostly 230gr. in a 300 win mag at 1000yd. I found them extremely consistant in weight and bearing surface, near to the point of it being a waste of time to check them. The other thing I found was that my brass immediatly developed donuts from one time firing and required inside reaming, no big deal problem solved. Richards bullets took my group averages of 12" to 14" down to 9' to 11", (ya, no hell I know). However I dont feel the BC is anywhere near what his tool maker told him they should be. I found that at comparable velocities the 230gr. Wildcat dropped approx. 5 feet more at 1049yds than the Sierra 240gr. Playing with the numbers on the Sierra infinity program I would put the BC on the 230gr. ULD at about .510. Now if Im out in left field and doing something wrong here please point it out because Id love to keep using Richards bullets.
I am not sure why your load is droppign that much compared to the 240 gr Sierra. Was this from actual impact heigth measurements taken in the field?
I would be curious to see your midrange tajectory figures comparing both bullets. I would suspect that the Wildcats are landing much lower at midrange resulting in your lower 1000 yard impacts.
That said, Even if they are producing this kind of B.C. value, why in the hell would you not use them if they are cutting 25% off your group averages? In my way of thinking it would be obsurd to use a bullet simply because of a slightly higher B.C. especially when they did not shoot as well as the Wildcat Bullets. I do not understand what more you need in the bullet.
I think we get way to caught up in B.C. and forget to look at the actual groups we are getting on paper and pick the best bullet that way. Personally I would give up .2 in B.C. for 25% smaller groups, bullet drop is easy to figure!!
Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.
It's true, a bullet with BC's just several points lower than another will often be overlooked when in fact it's not much lower at all and downrange it would be very hard to notice on a given day which of the bullets was used. Take a look at the 200 gr Nosler Accubond. Good bullet, relatively high BC (.585), and compare it to the 210 JLK (.665). One has a distinct advantage in the wind, retained energy and offers a larger window with regaurd to range estimation error, all of which lead us to look for high BC bullets. Still, the 200gr Accubond is a good choice as well.
Giving up .2 in BC is a little too steep for me, .1 or so maybe, but it better shoot way better than the higher BC bullet did or have something else to offer cause it's going to get hammered in the wind way down range. Comparing groups on a decent day is ok with high and low BC bullets, but it's when condition get more adverse that the high BC bullet is way more forgiving.
Sierra's 240 and 300gr MK's are hard to beat. Thankfully there are more and more high BC bullets that are real close to them now days, and like you say, offering even better accuracy in many rifles.
If both bullets were good and zeroed at 100 yards, I'd say the 240 SMK has a substantially higher BC. If the Wildcat bullet printed 7-8" lower at 100 yards vs. the 240 SMK then it might be higher in BC. Hard to tell not knowing the MV of each and how well each were zeroed at 100 yards.