Check the listing for details. Lyman Custom Fit Loading Blocks (0.445 diameter hole). Condition: New. Listed at 7.00 USD. Photo is for reference only. 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.There are six for Rifle and Handgun rounds. 0.388 Fits: 17 Hornet 223 Rem 17 Rem 30 Carbine 17 Rem Fireball 300 AAC 204 Ruger 32 ACP 22 Hornet 32 S&W L 222 Rem 32 H&R 222 Rem Mag 327 Federal 0.445 Fits: 218 Bee 38 Super 224 Wea. Mag 357 Sig 25-20 38 S&W 6.5 Grendel 38 Spec 6.8mm Rem 357 Mag 32-20 9mm Makarov 380 Auto 40 S&W 9mm Luger 10mm Auto 0.485 Fits: 225 Win 280 Rem 22-250 300 Sav 220 Swift 308 Win 243 Win 30-06 6mm Rem 7.62x39 240 Wea. Mag 7.65 Arg. Mau. 250 Sav 8mm Mauser 257 Roberts 338 Federal 25-06 35 Rem 260 Rem 358 Win 6.5x55 35 Whelen 6.5 Creedmoor 9.3x62 6.5-284 450 Bushmaster 270 Win 45 ACP 7mm-08 45 GAP 0.530 Fits: 284 Win 44-40 7-30 Waters 41 Rem Mag 30-30 Win 44 Special 32 Win Spc. 44 Rem Mag 32-40 444 Marlin 38-55 45 Colt 375 Win 454 Casull 38-40 460 S&W 0.565 Fits: 223 WSSM 300 Rem Ultra Mag 243 WSSM 300 Wea. Mag 25 WSSM 303 British 257 Wea. Mag 8mm Rem Mag 264 Win Mag 325 WSM 26 Nosler 338 RCM 270 WSM 338 Win Mag 270 Wea. Mag 340 Wea. Mag 7mm Rem Mag 338 Rem Ultra Mag 7mm Wea. Mag 350 Rem Mag 7mm WSM 375 H&H 7mm Rem SAUM 375 Ruger 28 Nosler 375 Rem Ultra Mag 7mm STW 405 Win 7mm Rem Ultra Mag 416 Rem Mag 30-40 Krag 450 Marlin 300 H&H 458 Win Mag 300 Rem SAUM 480 Ruger 300 RCM 50 AE 300 WSM 500 S&W 300 Win Mag 0.615 Fits: 30-378 Wea. Mag 416 Wea. Mag 7.62x54R 45-70 338-378 Wea. Mag 45-90 338 Lapua 45-100 348 Win 45-110 378 Wea. Mag 45-120 460 Wea. Mag