![]() ![]() The 50 Thumper as with all the Thumper line is designed on the K.I.S.S. Most manufacturers simply tune a standard round for. Like many high velocity rounds the subsonic 50 Thumper retains most of its velocity and energy out past 1000 yards. The AMMO INCORPORATED /stelTH/ line is more than just a standard round tuned for subsonic velocity. ![]() Put rifle ammos head to head to compare caliber and more. The more aerodynamic the better but looking at flat points, hollow points, and hollow points designed to carry a small jacketed bullet to force expansion. The 50 Thumper is a subsonic rifle cartridge that fires a 600-750 grain. 50 Cal BMG - 660 Grain FMJBT - PMC - 200 Rounds vs 45 ACP - 230 Grain FNEB - Remington Subsonic - 50 Rounds. 45-70 GOVT Hornady Subsonic 410Gr Sub-X - 45-70 Government - expanded. My interest in bullet designs will be in maximum energy transfer to the target along with designs that will maximize long range (300 yard ballpark or more hopefully) accuracy. 50 BMG - choice of FMJ / Hornady A-Max / SLAP / Slap-T - Expanded ammo bullet. ![]() This will be a short barrel, only around 17", and as you may have guessed (being a subsonic round) it will be a suppressed rifle. 50 BMG have velocities approaching three times the speed of sound. That's very slow for just about any bottleneck (as opposed to straight-walled) cartridge. My plan is to be casting 600-800+ grn boolits for this rifle, so that is the first thing I need input on.what twist will stabilize these big pills and not strip the sides off the bullet in the rifling? 50bmg rounds that are subsonic Sound travels at about 1100 fps. It has been suggested that for lead I should be getting a slower twist. to the point that I wonder if I am making a mistake by choosing a fast twist barrel (1:10 twist) that would be the standard choice for heavy jacketed bullets fired at subsonic velocities (about 1000 fps). I have always assumed that I would experiment with casting BIG boolits for this rifle, but now that has become my primary interest. 50 BMG punching through three cinder blocks, and the reason its able. After the glitz faded from the big jacketed bullets, I realized that they are just going to plow through what ever they hit and never have any chance of expansion or transferring much energy to the target in a hunting situation. Predicting the trajectory of subsonic 300 Blackout bullets is difficult. The subsonic round uses 50 bmg bullets for jacketed projectiles.and that is what originally got my attention, along with the availability of pulled surplus bullets for cheap. Subsonic Controlled Fracturing 50 BMG 725gr Detroit Ammunition Company Item : TRM50BMG725 69.99 Out of stock Description Subsonic Controlled Fracturing 50 BMG 725gr Product Information Suppressors are all the range in the shooting sports right now and it stands to reason. I am using a Savage Axis action for the build and I need input on the proper twist rate to use for cast boolits. It will be chambered in 50 Hushpuppy (.510 cal bullet in a 7 wsm case cut at the shoulder). I need some input from the cast boolit experts on a rifle I am getting ready to build. Not sure which forum this fits in.but this started life as a factory rifle so here goes. ![]()
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