New to the ml world. just purchased this rifle. any advice. powder bullet any help will be thankfull.

get to know the rifle, is it in-line or blackpowder? both are muzzle loaders difference is the powder used

Start off simple mj. Pyrodex RS is a very forgiving powder - accurate and easy to ignite. I do recommend loose powder rather than pellets.

The 240 grain Hornady XTP bullet is usually quite accurate in most inlines like the Pursuit. It's very effective on whitetails and will do the job easily out there at 150 yards.

Start off with three shot groups at 50 yards to see what load your gun likes. Try 80 grains (volume) from a powder measure (plenty of killing power for deer). Then try 90 grains, 100 grains, 110 grains, and maybe even 120 grains. Let the gun tell you what it likes. I suspect you will find the best load in the 85/90/95 grain range.

You can buy prepackaged bullet/sabot combinations such as this one to get started. http://www.grafs.com/retail/catalog/product/productId/18435.
As you gain experience you can experiment with the extremely wide selection of bullets and sabots available, or even full bore conicals. Plus, there are other powders to play with - Triple Seven, Blackhorn209, or even real black powder like GOEX.

Have fun, and be sure to fully clean the gun after each shooting session. The residue from all muzzleloading powders will cause rust if left in the bore. Some are worse than others, but all will do it.

Thanks

It may also be recommended to run a wet patch followed by a dry patch down the barrel in between shots. This helps to remove residue and makes loading much easier. This is especially true if you are going to shoot multiple loads at the range. READ the instructions that came with you rifle and check out the manufacturer website to see if they have any additional videos.