Recent content by nralifer

I have to develop loads of novel bullets all the time. My method is to look up data for existing mono or nonmono bullets of similar weight in the same caliber and start out at the low end of the recommended powder charge, then proceed to incrementally increase the charge until I see early signs...

Gel testing will never be able to exactly replicate antual wound injuries because there are too many valiables in every shot. What gels do is give fairly accurate data on expansion velocity. As far as extent of internal injury and types of injury gels were not designed for that. They are too...

Try using the recommended twist rate or tighter

I have one and agree. Recent triip to Africa by Jarret rifles showed that they killed 2 Cape Buffalo and an Hippo each with one shot using the 300 gr BD2 in a 375 H&H, less powerful thN the 375 Ruger. Incidentally they also took Plains Game out to 600 yds because of the G1BC of the bullet.

Very accurate and lethal. Will kill virtually anything in North America with one shot and Bulldozer Bullets.

Did try StaBall Match whose burn rate is faster more like Varget. Got the same result. What powder would you suggest? In looking the data over SB-M caused the BD2 to flatten primers at 51 gr (3110 fps) and the HH to flatten primers at 52.5 grains (3133 fps). Only a difference of 23 fps. Both...

It seems intuitive that reduction of bearing surface through the use of multiple groves should improve MV. This effect of reduced friction should be seen with virtually any powder. That is exactly what I thought before doing the testing. The result was quite different. Repeated the test three...

The 151gr HH .308 in a 24” 1/9 twist Bartlein barrel vs the 150 gr BD2.308 and a max load of 53 gr of LVR

Would be nice if you were more spcific about pressure and pressure signs and the degree of severeness of any specific sign. Also would like to know how much pressure is associated NO primer flattening. In other words, how high a pressure do you see with primers that are not obviously flattened.

We have tested the weight equivalent Hammer bullets 3 times and in only one instance did the Hammer go only 27 fps faster than out 150BD2 which is insignificant. The difference in BC is huge in favor of the BD2, passing the Hammer in the first 100 yds. Results are posted on FB pages. I don’t...

I don’t know what to tell you except that your barrel may be slow. I have two 20” 308Win barrels and can reach 2920+ fps from both using LVR and both large and small rifle brass with a jump of 0.025-0.030” without pressure signs. Have for 4-5 years. One is a 1:10 and the other is 1:9 twist.

You will have a real flat shooting rifle there

At tjose prices sounds like a good idea

There are several powders you can use such as H50, 24N41,N570, RlL33, N568, Retumbo The latter two are best in shorter barrels (30-34”).

What cartridge are you using in your 375?