Not a thing wrong with a plain base bullet in the 358 Win.
A few years ago, I went to the range with my 358 Winchester , 98' Mauser , FN Herstal, with Mod. 70, factory Pre-64 Win barrel.
It has always been a
real shooter !
I shot several nice groups with cast loads today. One load , 38 grs. of IMR 7383 with the Lyman 358318 HP was very impressive.
I ( just for the heck of it ) had loaded some plain based, SAECO , # 353 pistol bullets with 10.5 grains of Russian Unique with a CCI 34 primer.
I was shooting at 50 yards, I fired a 5 shot group with this load and could barely believe my eyes, fired another 5 shot group and still another. Group after group like this.
People tell you that a plain based bullet won't shoot well out of a rifle.....