Anyone shooting the Lee 7mm boolit in a 7x57 rolling block. Checked, unchecked, etc?? Just wondering how they may shoot as I thought these rifles were intended for much heavier bullets. The one I have is a true sewer pipe but it shoots minute of deer (barely) at 50 yds with jacketed stuff and was wondering about cast. I know about the "old" 7x57 being different from the current 7x57 so no need to rehash that here. Thanks!
Found the info.
I have just begun playing with Cast in a 7x 57 although it is not a rolling-block it has a generous bore .
Mine shoots cast boolits better than J-word stuff. That may be because I cast them at .288" diameter and gas-check them. My 7X57 roller has a worn but smooth bore. I cast of COWW/Lino and water drop quench. I had LBT make a 175 grain spire-point mould from a throat pound-cast. Off-the-shelf moulds are mostly a waste of money since none are the correct diameter and the "bore-ride" sections way too small to shoot well. Veral Smith at LBT is a genius when it comes to cutting a mould to accurately fit your gun's throat and bore.
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| BP | Bronze Point | IMR | Improved Military Rifle | PTD | Pointed |
| BR | Bench Rest | M | Magnum | RN | Round Nose |
| BT | Boat Tail | PL | Power-Lokt | SP | Soft Point |
| C | Compressed Charge | PR | Primer | SPCL | Soft Point "Core-Lokt" |
| HP | Hollow Point | PSPCL | Pointed Soft Point "Core Lokt" | C.O.L. | Cartridge Overall Length |
| PSP | Pointed Soft Point | Spz | Spitzer Point | SBT | Spitzer Boat Tail |
| LRN | Lead Round Nose | LWC | Lead Wad Cutter | LSWC | Lead Semi Wad Cutter |
| GC | Gas Check |
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