Decided to get into reloading after hitting a 9pt in the shoulder opening day with hornady blacks. after tracking for over an hour found him but had to shoot him again. the next day my brother shot an 8 pt double lung that didn’t bleed a drop in 80 yards but we did find it. So I decided to switch ammo and bought a box of Buffalo bore 275gr xpb and shot the best group of my life well under 1/2 inch at 100 yards. So I went all in on reloading because I will go broke shooting that stuff. my goal is to try to replicate that ammo.
I can not find the xpb 275gr anywhere but did get some hornady 240 xtp mags and barns 250 ttsx to practice with. I loaded some up today using lee dies 3 rounds of each(first time reloading) both 35.5 g of lil gun all case length where between 1.693 and 1.695. C.o.l on xrp was 2.060 and 2.245 on the ttsx. Crimp both to about .475 my question is last shot on but loads jammed my bolt while trying to load. The bolt was all the way forward but would not go down or back out. I had to tap with a rubber mallet to get unstuck I thought it was a fluke but it did it again on last shot of the ttsx too. is there something that I did wrong? any help would be appreciated.