Are you looking for information on p770 forgiveness then you may actually be comparing them with p790? Both sets are pretty similar to each other and if the decision-making factor is the forgiveness then both iron sets are pretty to similar to each other in terms of spin. But for those with high spin p790 would be a better choice.
Though less than p790 but p770 itself is no less than any awesome forgiving iron set. P770 has a pretty higher moment of inertia(MOI) and lower toe sidish Center of Gravity (CG) which makes it pretty forgiving.
So any shot you play off the center doesn’t make the face of the club open or closed. As a result, your shot will have a higher probability of traveling towards the intended target line.
The same goes with the lower center of gravity which helps to conserve the height and spin. If you are an advanced player who enjoys control over the ball then this iron set may actually be a little step back for you. As this product is more intended for the general masses or for amateurs.
With that I mean to say that golfers who don’t have any significant control over the ball will enjoy playing with iron sets. Mainly because of the forgiveness offered by the club. What makes them even better is the increased distance you can achieve by them.
Distance and forgiveness are directly related. In the case of p770 higher forgiveness, you will be able to impact forward momentum to the ball. That means, even if you hit the ball off center the shaft face will not add the extra spin onto the ball. As a result, the ball will not waste its energy in higher revolutions per minute.
This saved energy can actually be used to fight the drag. So with a forgiving iron set such as p770, you will observe increased distance immediately.
To verify this, you can pick up any unforgiving iron such as MP-60 or any other iron which you are sure belongs to an unforgiving class. Play the same shot with both of them, you will observe that you are able to get more distance from the p770. This is to assert that p770 is an excellent forgiving iron set.
Now lets assume that you are an advanced-level player. You need to play the draw shot. You have a forgiving p770 and unforgiving MP-60 available. You will enjoy playing with MP-60 because it offers more spin than the p770. The control on the ball as soon as it lands on the greens would be much higher with p770.
This is the dilemma when it comes to the high forgiveness of the clubs such as p770. Although, you will great higher distance but for shots that require control over the ball you will struggle with that.
If you plan to keep the entire set for all types of shots then over time you will realize that you have stopped experimenting. That further means, your learning curve has declined. To counter this problem, you can keep p770 irons for longer shots but for close shots or those which require ball control you can rely on low forgiving irons.
This way you can balance out your iron sets. Increase the distance after the tee and near the whole to keep more control over the ball.
Apart from the technicalities, p770 irons set will keep you interested in the game. You will feel better on the course. The confidence will be high when you leave the field. That is associated with the forgiveness offered by these clubs.
You will feel immediately that your game has improved. It will make your practice more. If you start experimenting as suggested above you will understand what adjustments suit your style of swing. As a result, you will become a better player with a mix of the forgiving and unforgiving sets than with just forgiving or unforgiving sets.