The 67s did not have side marker lights but in 1969 as far as I know all Camaro and Corvette’s had side markers, I think a law was passed making it standard equipment. My best friends Camaro is sweet ride when it comes out, no lack of power either.
I sure am sitting on a lot of test loads waiting for a day away from work with fair conditions.
I have a bunch of 69 gr. Noslers custom comps loaded up with Varget and H335 about 7 load weights in each to test – just trying to get the 18″- 8 twist with the Wylde chamber to shoot very well with a bullet in the 65 to 69 gr. range for the 223.
I have had great luck working with a 338LM bullet doing RnD we have been pushing the 300 gr. Scenars at 2750 fps with excellent results for years – around 2800 rounds down the tube. we have been using a stepped G1 BC. calculated at.
.785 to a min. velocity of 2720fps
.760 to a min. velocity of 1970fps
.730 to a min. velocity of 1250fps
.720 to a min. velocity of 980fps
.740 to a min velocity of 0 fps
Lately we have been working with a hybrid bore rider with some excellent results. A 256 gr. bullet with a G1 BC of .814 ,yes that is correct a lighter bullet then the 300 grain Scenar with a BC of .785
The bore rider weighs in at 256 grains and carries the high BC of .814 and we are pushing this bullet at a screamin 3138 fps with ease.
Not a bullet you would use for everyday plinking at steel, but when you want to hit something this little hot rod shines when it comes to minimum windage and dialing your vertical.
If you look at the earlier pictures you will see the long sharp profile of the 256 gr hybrid in the center with the 300 gr Scenar to it’s left.
This last weekend we did some quick RnD with the GS 414 grain bullet used in the 375 VM2 but this time we ran a few test loads out of the 375 Snipe Tac, at 133 grains of H50BMG. We had the 414 grain bullet running at 2784 fps the load had a extreme spread in volocity of 6 fps and on two separate days yielded a 1/4 to a 1/3 min. of vertical at 600 yards this was all accomplished within 13 rounds total from start of load development to last test round on second day. We have some additional loads ramped up higher now to see if we can slip into another accuracy node with a little more speed, our goal with the 414 grain bullet out of the Snipe Tac is 2900-2950 if it’s less but accurate thats good as well.
I have a bunch of test loads seated at 2305 giving it a jump of 25 thou. to the lands in the 260, the rifle still shoots well with 2800 plus rounds and from day one has consumed H4350 and the 139 gr. Scenars. So I have some test loads at 42.4, 42.6 and 42.8 just to see if the sweet spot has changed any. The most important thing I do is record what the bullet is to the lands and where it likes to run when new, then as time goes by and every 1000 rounds later you can re-measure and push the bullet out to get it back into the sweet spot. If I remmember correctly I am at about 38 thou. of throat erosion now, I will run this until I see a sudden drop in speed then the barrel is done.
We have another 260 to fine tune and the new 6.5×47 that we just chambered to do load development on.
So there is some more test bench news take care.
JH
