Lyman’s Custom Fit Loading Blocks are designed to provide a precise fit for a family of cartridge sizes. Made from tough, durable polymer, Custom Fit Loading Blocks hold 50 cartridges and will securely nest together for easy storage. Custom Fit Loading Blocks come in 6 sizes to match up with a large variety of cartridges. Each block is clearly marked with the diameter of the cartridge storage hole.

Three sizes available 388, 485 and 565

0.388 fits
-17 hornet
-17 rem
-17 rem fireball
-204 ruger
-22 hornet
-222 rem
-222 rem mag
-223 rem
-30 carbine
-300 AAC
-32 ACP
-32 S&W L
-32 H&R
-327 Federal

0.485 fits
-225 win
-22-250
-220 swift
-243 win
-6mm rem
-240 wea mag
-250 sav
-257 roberts
-25-06
-260 rem
-6.5x55
-6.5 creed
-6.5-284
-270 win
-7mm-08
-7mm mauser
-280 rem
-300 sav
-308 win
-30-06
-7.62x39
-7.65 Arg
-8mm mauser
-338 federal
-35 rem
-358 win
-35 whelen
-9.3x62
-450 bushmaster
-45 acp
-45 gap


0.565 fits
-223 wssm
-243 wssm
-25 wssm
-257 wea mag
-264 win mag
-26 nosler
-270wsm
-270 wea mag
-7mm rem mag
-7mm wea mag
-7mm wsm
-7mm rem saum
-28 nosler
-7mm stw
-7mm rem ultra mag
-30-40 krag
-300 h&h
-300 rem saum
-300 rcm
-300 wsm
-300 win mag
-300 rem ultra mag
-300 wea mag
-303 british
-8mm rem mag
-325 wsm
-338 rcm
-338 win mag
-340 wea mag
-338 rem ultra mag
-350 rem mag
-375 h&h
-375 ruger
-375 ultra mag
-405 win
-416 rem mag
-450 marlin
-458 win mag
-480 ruger
-50 ae
-500 s&w