40 gn vmax is a excellent bullet , but too long for most magazines . single loaded but it's very accurate . the 35 vmax is very accurate in some rifles , but velocity might be higher than you want due to the light weight . sierra make hornet specific bullets with thinner copper jacketing . the 40gn soft points worked great for me . be very carefull though, sierra make them in .224, AND .223 for older hornet rifles . use the .224 unless your rifle was made in the 1930's .any of these projectiles should work okay at reduced speed . pistol primers and a light crimp help with accuracy. i tried trail boss in the hornet and got velocity's around 1500-1600 fps, but due to the small case and the very light nature of trail boss i found it hard to get reliable and consistant case fill to get decent groups . i hope this helps