Larry Gibson
posted this
29 September 2019
I use several actual Loverin and pseudo Loverin design cast bullets {225462, 266455, 28-168-FN, 311465, 311466, 323470 and 323471]. They al shoot very well but share one design flaw. They provide excellent accuracy at nominal cast bullet velocities below the RPM Threshold and most often give better accuracy above the RPM Threshold than most of the designs with bore riding noses of that era. The longer bearing surface of the Loverin designs were most often well suited to the longer neck cartridges and longer throats of milsurp rifles back then. That attributed to a better fit in the cartridge necks (kept the GC inside the neck) and in the chamber throats.
They were designed back before the advent of "modern lubes" to include the NRA 50/50 lube and meant to carry, what was thought back then, sufficient lube for "higher velocity". . Thus with modern lubes the lube grooves are too wide and to deep. With the harder lubes we have today the lube is not purged off evenly on exit of the muzzle which creates initial imbalance and wobble of the bullet resulting in larger groups down range. With the use of a soft modern lube (NRA 50/50, 2800+, etc.) the soft lube purges off the bullet evenly, especially at higher RPM) and thus the bullets remain more accurate.
As to higher velocity performance in 12, 14 and 16" twist rifles of various cartridges I have gotten excellent accuracy of 2 moa or less (mostly 1.5 moa or less) with 10 shot groups out to at least 300 yards. The velocities range from 2300 to 2700+ fps. The key being to keep the RPM under the Threshold.
There are more modern designs of recent that combine a higher percentage of bearing surface and smaller, shallower lube grooves which result in better balanced bullets out of the mould, better structural support during acceleration and, with modern lubes, sufficient lube capacity. Those have proved to be more accurate cast bullets than the Loverin designs in matches and at high velocity. However, for general cast bullet shooting in rifles such as the 22H, 222 Rem, 6.5x55, 7x57,30-06, 30-30, 30-40 and the 8x57 the Loverin designs are very hard to beat for accuracy, if they are beat at all.
LMG
Concealment is not cover.........